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Brief
Understanding Offshore UnitizationBrazil and the U.S. ComparedA Primer for Oil and Gas Professionals
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Understanding Offshore Unitization—Brazil and the U.S. Compared
L. Poe Leggette
Gabrielle Mattioda
Baker & Hostetler LLP
Denver, CO, USA
The continental shelves of the United States and Brazil contain world-class oil and gas
resources. Since the United States first proclaimed rights over its continental shelf in 1945, holders
of oil and gas lease rights have produced tens of billions of barrels of oil and condensate, and tens
of trillions of cubic feet of natural gas. Based on the most recent data available, that part of the U.S.
continental shelf under federal government control—called the Outer Continental Shelf (“OCS”)—
is producing approximately 1.45 million barrels of oil per day and 3.65 billion cubic feet of natural
gas per day.
Source: U.S. Bureau of Safety and Environmental Enforcement
Brazilian offshore production has increased steadily as well. Between June 2011 and June
2015, Brazilian production from its renowned “pre-salt” jumped from 154,000 to 926,000 barrels of
oil equivalent per day. Total Brazilian offshore oil production in 2014 averaged 2.09 million barrels
per day.
2
Source: Produção de Petróleo e Gás Natural por Estado (2000-2014) http://www.bdep.gov.br/?id=574
Both Brazil and the United States grant to private companies rights to explore for and
produce offshore oil and gas long before the locations of oil and gas reservoirs are established. But
it is rare that the boundaries of reservoirs neatly line up within the boundaries of the leases or
concession areas granted by the governments.1
For that reason, both Brazil and the United States have recognized that after exploration is
under way, it can be more efficient to erase those lease or concession lines and allow development
of potential oil and gas reserves in a combined area. This benefit is achieved through modifying the
agreements to treat the areas as if they were part of an individual legal unit. This concept is called
“unitization” in the United States and “individualização”—literally, “individualization”—in Brazil.
For convenience, we refer to the practice in both countries as unitization. This paper is an
introduction to the basic ideas that govern unitization on the Brazilian continental shelf and the
American OCS.2
1 As the U.S. Court of Appeals for the Tenth Circuit noted recently, “The problem, of course, is that mineral deposits
don’t always follow plat [property] lines.” Entek GRB, LLC v. Stull Ranches, LLC, 763 F.3d 1252, 1254 (10th
Cir.
2014). 2 While this paper appears to be the first to compare the Brazilian and American approaches to offshore unitization, it is
hardly the first to take up the developing law of unitization in Brazil. It is our privilege to know all four American
authors of the leading papers on Brazilian unitization. Professor Owen Anderson and practitioner Andrew Derman have
published insightful papers on Brazilian practice. Owen L. Anderson,” Unitization,”
http://www.epge.fgv.br/conferencias/microeconomics2011/anexos.php?path=files/15_12_11/OwenAnderson&file=m_
Unitization_Agreements.pptx. DERMAN, A. B., & MELSHEIMER, A., “Unitization agreements: a primer on the legal
issues for unitization of the Brazilian pre-salt,” Rio Oil & Gas Conference 2010, Rio de Janeiro. Anais. Rio de Janeiro:
Instituto Brasileiro de Petróleo, Gás e Biocombustíveis, 2010. Brazil’s law on unitization was also considered, along
with that of 11 other non-U.S. jurisdictions, in a jointly authored article by Professor Jacqueline Weaver and
practitioner David Asmus. J. Weaver & D. Asmus, “Unitizing Oil and Gas Fields Around the World: A Comparative
Analysis of National Laws and Private Contracts,” 28 Hous. J. Int’l L. 3 (2006). Brazil has made substantial changes in
its laws and regulations, however, since that article was published. The authors also thank Monica Rebelo Rodriguez,
senior consultant at Petrobrás, for sharing her knowledge of oil and gas in Brazil.
3
1. In what form does the government grant rights to private companies to explore for and
produce offshore oil and gas?
United States
The U.S. government issues rights in the form of an oil and gas lease. The lease is both a
contract and a grant of a right in property. It is a contract because it is an agreement between the
government and one or more private parties. As a contract, it is interpreted under the usual rules of
contract interpretation, just as a contract entirely between private parties would be. Mobil Oil
Exploration & Producing Southeast, Inc. v. United States, 530 U.S. 604, 607-08 (2000). It is a grant
of private property because the U.S. Congress wished to use a kind of agreement with which the
American oil and gas industry was already familiar: the private oil and gas lease. Union Oil Co. of
California v. Morton, 512 F.2d 743, 747 (9th
Cir. 1975). As a kind of property, a lease is protected
by the Takings Clause of the Fifth Amendment to the U.S. Constitution. If the U.S. government
thoroughly interferes with a lessee’s rights granted under the lease, that interference will be
considered a “taking” of the lease, and the government will have to pay the lessee the fair value of
the lease.3
The U.S. government, acting through its Department of the Interior (DOI), has divided the
American continental shelf into “planning areas.” Every five years, DOI issues a schedule of “lease
sales” to be offered in those planning areas it wishes to open for oil and gas activity. Within the
U.S. Gulf of Mexico, for example, three planning areas have been established. For nearly four
decades it has been the practice of DOI to hold annual lease sales in two of those three areas: the
Western Gulf of Mexico and the Central Gulf of Mexico planning areas.
Before each lease sale, DOI publishes a notice of proposed sale, making available to
potential bidders the lease agreement and any additional lease provisions, called “stipulations,” to
be included in the leases for individual blocks. Bidders submit cash bids in sealed envelopes. On the
day of the sale, the bids are opened and read aloud. The highest cash bid for a given tract wins,
and—subject to government review to ensure it feels the bid represents the fair market value of the
lease—the high bidder receives the lease.
Brazil
In Brazil, the ownership of the soil is separated from the subsoil, and in this sense, all
mineral resources belong to the federal government.4 In 1953, Law No. 2004/53—later revoked by
Law No. 9,437/97—had already established that the federal government had the monopoly over oil
and gas (O&G) activities in Brazil. The same law also created Petróleo Brasileiro S.A. (Petrobrás)5
to carry out those activities on behalf of the government. This all happened in connection with a
government campaign called “The petroleum is ours,” an expression of a nationalist generation.
3 See generally Mark S. Barron, “Constitutional Protections for Mineral Interest Holders: Oil & Gas Regulation and the
Takings Clause,” 61 Rocky Mt. Min. L. Inst. (forthcoming 2015) (manuscript at 11-12, on file with the author). 4 See CRFB/88, article 176.
5 Article 61 of Law No. 9,478/97: “Petróleo Brasileiro S.A. – Petrobrás is a mixed-capital company linked to the
Ministry of Mines and Energy, which has as its objective the research, mining, refining, treatment, commerce, and
transportation of petroleum from wells, or schist or other rocks, or its by-products, of natural gas and of other
hydrocarbon fluids, as well as any other correlative activities or related subjects, in accordance with how they are
defined by law.” Petrobrás is a mixed-capital company in which the government owns 50.3 percent of the common
stock. In addition, the National Bank for Economic and Social Development (BNDS), which is a federal public
company, owns 9.9 percent of the common stock of Petrobrás. [information retrieved, on August 8, 2015, from
http://www.investidorpetrobras.com.br/en/corporate-governance/capital-ownership].
4
In 1988, a new constitution was approved. It proclaimed that all natural resources located
within the Brazilian territory, continental shelf, territorial sea, and exclusive economic areas were
assets of the federal government.6 At this time, the Brazilian Federal Constitution of 1988
(CRFB/88) had explicitly prohibited—in article 177, paragraph 1—the government from assigning
or granting any kind of participation, in cash or value, to companies for the exploration of oil or
natural gas deposits. Although this prohibition was established, this rule did not apply to contracts
involving Petrobrás. Article 45, sole paragraph, of the Constitutional Act of Transitory Provisions7
(ADCT), exempted those risk contracts entered into with Petrobrás for oil prospecting that were
effective on the date of the promulgation of the CRFB/88 and consequently did not fall under the
prohibition of article 177, paragraph 1. Thus, the exploration for and production of oil and gas were
limited to Petrobrás until 1995, when the Brazilian federal constitution was amended. Constitutional
Amendment No. 9/95 modified article 177, paragraph 1 of the CRFB/88 to allow state-owned and
private companies to engage in oil and gas activities.
In 1997 the Petroleum Law (Law No. 9478/97) was enacted. Among other provisions, this
law regulates national energy policy and activities related to the oil and gas monopoly and
establishes the National Energy Policy Council (CNPE) and the National Agency of Petroleum,
Natural Gas and Biofuels (ANP). The Petroleum Law effectively abolished Petrobrás’ monopoly
over oil and gas activities in Brazil and opened up the market to other companies. With the
enactment of the Petroleum Law, exploration blocks began to be granted under the concession
regime.
In 1998, the Brazilian government promoted what was called Round Zero,8 entering into
concession agreements with Petrobrás without a bidding process.9 The purpose of this was to ratify
Petrobrás’ right to explore for, develop, and produce oil and natural gas in the areas that were
already under production and/or areas where major investments were made in exploration activities
at the time the Petroleum Law entered into force.10
As a result of Round Zero, ANP (representing
the federal government) signed with Petrobrás 397 concession contracts on August 6, 1998. 11
Finally, in 1999 Brazil held its first bidding round in which private companies were allowed
to bid for the right to explore for and produce oil and gas. During this time, the concession regime
was the only one in place. With the enactment of Laws Nos. 12,351/2010 and No. 12,226/2010, two
other regimes (production sharing and onerous assignments) were established for granting rights to
companies to explore for and produce oil and gas in Brazil.
Currently there are two regimes12
under which the Brazilian government may grant rights to
private companies for exploration and production of oil and gas: concession agreements and
6 See CRFB/88, article 20, V, VI, and IX.
7 Constitutional Act of Transitory Provisions (ADCT) is a group of constitutional rules established in order to ensure a
smooth transition from a previous constitutional regime to the new one. 8 Draft of the Concession Contract for Round Zero can be found at http://www.anp.gov.br/brasil-
rounds/round8/geral/contratos/ContratoR0.PDF and http://www.anp.gov.br/brasil-
rounds/round8/geral/contratos/ContratoR0_aditivo.pdf. 9 See Article 34 of Law No. 9,478/97.
10 See Articles 32 and 33 of Law No. 9,478/97.
11 Information retrieved on August 8, 2015, from http://www.brasil-
rounds.gov.br/Resultado_Rodadas/RESUMO_round0_resultados.asp. 12
There are three regimes applicable to the granting of rights to explore for and produce oil and gas in Brazil:
concession agreements, production sharing agreements, and onerous assignment agreements. The onerous assignment
agreement is not addressed above because it cannot be granted to private companies.
5
production sharing agreements (PSAs).13
Both of these agreements are awarded to private
companies through bidding rounds (competitive, sealed-bid auctions), which are held by the ANP.
The ANP is the federal regulatory agency for the oil, natural gas, by-products, and biofuels
sector in Brazil. This regulatory body was created to promote regulation, contracting, and
inspection of the oil and gas industry.14
The Brazilian bidding rounds are authorized by the National Energy Policy Council
(CNPE). Once a bidding round is approved by the CNPE, the ANP will publish information
regarding the bidding process on its website and in the Official Diary of the Union (DOU).
ANP Resolution No. 24/2013, article 3, describes the bidding process under the PSA, which
consists of the following steps:
I. Publication of the draft of the tender protocol;
II. A public hearing;
III. Publication of the final tender protocol;
IV. Qualification of the interested companies;
V. Submission of offers and judgment of bidding;
VI. Award of the PSA and approval of the bidding; and
VII. Execution of the contract.
These steps were similar to those established for the bidding process for concession agreements in
ANP Resolution No. 27/2011. However, on March 18, 2015, ANP published a new resolution
concerning the procedures for bidding for concession agreements and revoked its Resolution No.
27/2011. This new resolution, ANP Resolution No. 18/2015, inverts the steps of the bidding process
under concession agreements. According to the new rule, the decision on the winning bidders will
be made prior to the qualification of the companies. As of September 2015, Brazil is holdings its
13th bidding round, the first under the new rules established by ANP Resolution No. 18/2015.
The tender protocol sets forth the requirements and the blocks that are available for bid.
Companies are required to pay a participation fee for the sectors15
in which they have an interest in
bidding. Once the payment is made, the companies will receive the data package regarding each
sector for which they have paid a participation fee. The data package includes general information,
and when available, it will include thematic maps, public seismic data, public wells data, and public
gravimetry and magnetometry data. Companies may place a bid only on the blocks within a sector
for which they have paid the participation fee. ANP Resolution No. 18/2015 also stated that in
addition to the participation fee, the tender protocols for concession agreements may determine the
payment of fees regarding the costs of the bidding process.16
This fee had not been applied before,
and the ANP has not clarified yet which specific costs of the bidding process will be covered by this
fee.
Furthermore, companies must obtain financial,17
technical,18
and legal19
qualification from
the ANP. Proof of compliance with labor and tax regulations20
is also required from the companies.
13
See Article 23 of Law No. 9,478/97. 14
See Article 8 of Law No. 9,478/97. 15
In Brazil, the sedimentary basins are divided into sectors, and each sector has a number of blocks. 16
ANP Resolution No. 18/2015, article 14, paragraph 4. 17
See ANP Resolution No. 24/2013, article 19; ANP Resolution No. 18/2015, article 31. 18
See ANP Resolution No. 24/2013, article 18; ANP Resolution No. 18/2015, articles 32, 33, 34, and 35. 19
See ANP Resolution No. 24/2013, articles 20, 21, and 22; ANP Resolution No. 18/2015, article 29. 20
See ANP Resolution No. 18/2015, article 30 and tender protocols for the description of the documents necessary to
prove labor and tax regularity. For example, item 3.7 of the tender protocol for the 11th
bidding round (granting rights
6
The tender protocol of each bidding round lists the documents that the companies are required to
submit to be considered for qualification.21
Only qualified companies will be able to submit bids
during the bidding rounds granting rights to explore for and produce oil and gas under the PSAs. As
discussed above, qualifications of the companies are made after the submission of bids for
concession agreement and only by the bid winners. As a result, companies participating in the
bidding process for concession agreements will be able to bid without receiving prior approval of
their qualification status. This process may result in one member of a consortium not being
considered qualified, which in turn may affect the composition of the consortium and other
members playing a role that was not foreseen by them at the time of the bid.
During Public Hearing No. 01/2015, the ANP defended the position that having the
qualification as a step after the submission and judgment of bids will likely increase the
competition, and it will help the agency make better use of its human and financial resources. It also
benefits the companies by possibly reducing the costs of bidders that do not ultimately win the bids
and provides more time for the winning bidders to submit qualification documents. In addition, it is
possible for the companies to have a simplified process for technical qualification in cases in which
they already have existing concession contracts with the ANP and are requesting qualification
under the same modality as the one in which they are already operating.22
Interested companies may bid individually or as part of a consortium. Individual bids are to
be submitted to the ANP for each block in the sector, and the bids must be submitted in one sealed
envelope when they are all from the same consortium. If a company is also a part of another
consortium, bidding in the same sector, on separate blocks, the bids must be submitted in separate
envelopes.
Foreign companies can participate in the bidding process.23
However, if the company does
win a bid, the company will need to incorporate a subsidiary under Brazilian law with its
headquarters and administration located in Brazil.24
When determining the winning bid during licensing rounds that grant rights for exploration
and production under a concession agreement, the ANP will take into account, through the
allocation of scores and weights, the signature bonus (40 percent), the minimum exploratory
program (40 percent), and the local content (20 percent). Under a PSA, the principal consideration
under the concession contract) and item 3.7 of the tender protocol for the first bidding round (granting rights under the
first production sharing contract) state that national companies should submit the following documents to prove labor
and tax regularity: (a) Proof of enrollment in the Corporate Taxpayer Registry—CNPJ; (b) Joint Debt Certificate with
effect on federal taxes and the Federal Debt Roster, in charge of the attorney general of the National Treasury (PGFN);
(c) Certificate of Regularity of the Severance Premium Reserve Fund—FGTS; (d) Certificate of Pension Contributions
and Third Parties —RFB/INSS; and (e) Labor Debt Certificate with negative effect, in charge of the Labor Court. 21
When feasible, foreign companies also have to fulfill the same requirements as national companies with similar
documents to prove their qualification. 22
See ANP Resolution No. 18/2015, article 35. 23
Foreign companies participating in international bidding, when possible, will have to fulfill the same requirements
imposed on domestic companies by providing equivalent documents to prove technical capacity, financial competence,
and legal and tax compliance (article 32, paragraph 4 of Law No. 8,666/93). Those documents must be authenticated by
the respective consulates and translated by a certified translator. The Brazilian legal system requires foreign companies
participating in the bidding rounds to prove that they are organized under and operating in accordance with the law of
the foreign country in which they are organized (article 39, II of Law No. 9,478/97 and article 17, II of Law No.
12,351/2010). They also have to appoint a legal representative with the ANP to carry out acts and respond
administratively or judicially as required under Brazilian law. 24
See CF/88, article 176 paragraph 1; Law No. 9,478/97, article 39, IV and sole paragraph; Law No. 12,351/2010,
article 17, IV; ANP Resolution No. 18/2015, article 12, sole paragraph; ANP Resolution No. 24/2013, article 21.
7
given to each bid is the amount of the surplus to be paid to the government under the agreement,
taking into account the minimum percentage defined in the tender protocol.
2. How does the government determine the size of the area to be covered by the
agreement?
United States
By statute, DOI is limited to granting an area that does not exceed 5,760 acres, an area equal
to land three miles square. 43 U.S.C. § 1337(b). Since 1978, the secretary of the interior has had
authority to exceed that acreage if he or she finds “that a larger area is necessary to comprise a
reasonable economic production unit.” Id. No such finding has ever been made.
Brazil
The determination of the geographic area subject to the agreement is the responsibility of
the CNPE, which through the studies promoted by the ANP defines and demarcates the blocks.25
The size of the blocks varies according to the location of the areas. Since the fifth Brazilian
bidding round, ANP adopted the cell model, which is similar in concept to the model used in the
Gulf of Mexico and the North Sea. The ANP delineates the areas to be auctioned by designating
areas within the sedimentary basins, which are further divided into sectors, which are then divided
into blocks. Blocks are formed by combining a group of cells. Block sizes can vary from one sector
to another, but the block sizes are uniform for each sector.
Source: ANP
In this model, blocks have a predetermined size inside a sector. Offshore areas containing blocks in
shallow water (less than 400 meters deep) were offered between 170-190 km² (corresponding to six
cells); while blocks in deep water (between 400 and 1,000 meters deep) and ultradeep water were
offered between 650-770 km² (corresponding to 24 cells).26
25
See Law No. 9,478/97, article 2, VIII and paragraph 1 and article 8, II. 26
Retrieved from http://memoria.ebc.com.br/agenciabrasil/node/574495 and
http://www.petroquimica.com.br/edicoes/ed_249/ed_249a.html.
8
Source: ANP
3. What are the principal rights given to the company under the agreement, and what
rights are reserved by the government?
United States
Broadly speaking, the offshore lessee receives four sets of rights in the OCS lease
agreement form.27
First, the lease sets the period of time in which the lessee enjoys the rights under
the lease. By law, the lease must have a minimum initial period, usually called “the primary term,”
of five years. The primary term may be longer when needed to encourage exploration in deep water
or in unusual environmental circumstances.28
The maximum time allowed for a primary term is 10
years. Under current policy, leases in waters of 400 meters or shallower have five-year primary
terms. Leases in waters of 400 to 800 meters deep have primary terms of eight years, provided the
lessee drills a first well within the first five years of the lease. Leases in waters of 800 to 1,600
meters deep have primary terms of seven years, extended to 10 years if a well is drilled in the first
seven years. Leases in waters deeper than 1,600 meters have primary terms of 10 years.29
After the
primary term, the lease remains in force if the lessee is producing oil and gas, is drilling a new well,
or is “reworking”30
an existing well on the lease.31
A lease maintained by production, drilling, or
reworking is said to be in its “secondary term.”
Second, the lessee receives “the exclusive right” to “drill for, develop, and produce oil and
gas resources” within the leased area. Included in this exclusive right is the right to locate the
surface of the well outside the lease boundary and to drill directionally to reach a deposit of oil or
gas within the lease boundary.32
The rights to drill and produce are subject to substantial
27
The form currently used for new OCS leases is Form BOEM-2005 (October 2011). It is styled “Oil and Gas Lease of
Submerged Lands under the Outer Continental Shelf Lands Act.” We will refer to it as the “OCS Lease Form.” 28
30 C.F.R. § 556.37. 29
See, e.g., 80 Fed. Reg. 42529, 42530 (2015) (final notice of sale for Sale 246). DOI now even grants an eight-year
term for new leases in waters shallower than 400 meters if a well, begun in the first five years of the lease, targets an oil
or gas zone deeper than 25,000 feet below the seabed. Id. 30
“Reworking” means to take steps to maintain or increase production from an existing well, or to repair a well to
maintain an appropriate level of safety. 31
OCS Lease Form § 3. 32
OCS Lease Form § 11.
9
requirements, for these rights are subject to existing laws and regulations and, in some cases,
regulations enacted after the lease is issued. For example, a lessee cannot drill a well without first
receiving approval of an exploration plan or emplacing a production platform and beginning to
produce without first receiving approval of a development and production plan.33
Third, the lessee has the “right” to assign interests in its lease to a third party, although that
right is subject to the consent of DOI.34
Generally, DOI will allow the assignment if the company
that will receive the assignment is qualified to do business on the OCS. The company assigning the
lease (the “assignor”) remains responsible for fulfilling any obligations that “accrued” before the
assignment takes effect. For example, the assignor is responsible for paying royalties on oil or gas
produced before the effective date of the assignment.35
Fourth, a lessee may relinquish all or part of the lease, even before its primary or secondary
term has ended, by filing a relinquishment with DOI. The lessee remains responsible for all
obligations that accrued before relinquishment, including obligations to permanently plug all wells
drilled on the lease and to remove any structures emplaced to produce oil or gas.36
Most important to the topic of unitization is a right the lease does not give the lessee. The
lessee does not own the oil or gas existing “in place” within the lease boundaries. “A lease does not
grant lessees the ownership of minerals in place, and the law of capture applies to the development
and production of OCS minerals.”37
A molecule of gas originally beneath Lease A may be produced
through a well on Lease B. That molecule is not “owned” by either lessee until it reaches the
surface of a well. All the lease grants to the lessee is the right to an “equal” opportunity to develop
the gas from the reservoir that underlies Leases A and B.
While the OCS lease form grants significant rights to a lessee, it reserves several rights to
the government, some of which we will discuss here. First, the government reserves the right to
amend statutes and regulations. The lease is subject to those amendments, unless they “expressly
conflict with an express provision” of the lease.38
Second, the government has the right to receive
yearly rental payments while the lease is in force, until the lease begins producing oil or gas. At that
point, rentals end and “minimum royalty” and royalties begin.39
Third, the government reserves the right to receive royalties on oil and gas produced.
Typically, those royalties are a percentage of the oil or gas itself, or a percentage of the “value” of
the production. Traditionally, the OCS lease form reserved a royalty share of one-sixth for leases in
shallow water and one-eighth for leases in deeper water. More recently, DOI changed its policy,
increasing offshore royalty rates to 18.75 percent for new leases in all water depths.40
Fourth, the government reserves the right to inspect OCS facilities; enforce its regulations
for safety, environmental protection, and conservation of natural resources; suspend operations that
pose unnecessary risks; and terminate a lease for violations of the lease, the regulations, or the
statutes.41
33
OCS Lease Form § 9. 34
OCS Lease Form § 20. 35
30 C.F.R. § 556.62. 36
OCS Lease Form § 21. 37
45 Fed. Reg. 29280, 29281 (1980). 38
OCS Lease Form § 1. 39
OCS Lease Form §§ 4 and 5. 40
The change to an 18.75 percent royalty rate was first implemented in 2008 in Lease Sale 206.
http://www.boem.gov/BOEM-Newsroom/Press-Releases/2008/press0213.aspx. 41
OCS Lease Form §§ 12 and 13.
10
Fifth, the government reserves the right to allow third parties to come within the boundary
of the lease to conduct geophysical surveys or even to drill a well for geological information. The
third party may not produce oil from the well it drills, and it may not “unreasonably interfere” with
the lessee’s own operations.42
It is rare for a third party to drill a well on another’s lease for
geological information, but it is common to conduct geophysical surveys. Similarly, the
government reserves the right to allow a party operating a neighboring lease to locate its wells or
production platforms within the boundaries of another lessee’s lease. These rights of use and
easement allow the neighboring party to avoid environmentally sensitive sections of the seabed
when emplacing wells or platforms.43
Finally, the government reserves the right to allow a third
party to receive a right of way to lay a pipeline across the seabed of another’s lease.
Brazil
Private companies can obtain the right from the Brazilian government to explore for and
produce oil and gas in Brazil through concession agreements or PSAs. Onerous assignment
agreements are granted only to Petrobrás.
Concession Agreement The concession agreement is a type of contract in which the ANP grants rights to companies
to perform the activities of exploration, development, and production of oil and gas in a given
block. In this model, companies explore for and produce oil and gas at their own risk. The
companies own the hydrocarbons upon production. The company is responsible for the payment of
taxes and any corresponding share of royalties provided for under the law or the agreement.
In Brazil, concession agreements are granted in areas that are not considered as strategic and
also areas outside the pre-salt polygon. However, before the enactment of Law No. 12,351/2010,
areas in the pre-salt were granted under the concession regime.
The concession agreement has two stages: exploration44
and production (which also
includes development activities).45
The exploration phase can vary, lasting up to nine years, with
the duration determined under the tender protocol,46
while the production phase has a duration of 27
years.
Under the concession agreement, the concessionaires have the obligation to:47
a) Pay the government takes: signature bonus, royalties, special participation,
and payment for occupation or retention of the area;
42
OCS Lease Form § 19(a). 43
OCS Lease Form § 19(b). 44
Technical definitions are described in article 6 of Law No. 9,478/97.
[…]
XV – Research or Exploration: set of operations or activities aimed at evaluating areas, in order to
discover and identify oil or natural gas deposits;
45 Article 6 of Law No. 9,478/97 states:
[…]
XVI – Production: set of coordinated oil and natural gas extraction operations from a deposit and the
preparation for their conveyance;
XVII – Development: set of operations and investments intended to ensure the viability of production
activities in an oil or gas field;
46 The determination of this period takes into account the location of the block and its exploratory mode.
47 See Law No. 9,478/97, Chapter V, Sections I and V and Tender Protocols for granting concession contracts.
11
b) Perform a minimum exploratory program (work program);
c) Inform the ANP of the discovery of both oil and natural gas, as well as any
other natural resource it may locate during exploration;
d) Provide the ANP with a declaration of commerciality upon locating a
commercially viable deposit;
e) Use best industry practices to conserve reservoirs and other natural resources;
f) Fulfill local content obligations;
g) Remove the equipment that is not the object of reversion and to do
environmental restoration to the property in case of termination of the
concession; and
h) Indemnify the government for any claims it may incur as a result of the
activities of the concessionaire.
The concessionaires have rights, under the concession agreement, to:48
a) Explore for and produce hydrocarbons within the concession area;
b) Own the oil and natural gas after extraction;
c) Manage the import and export of hydrocarbons subject to the ANP’s
authorization;
d) Transfer the concession agreement to another company/companies with ANP
authorization;
e) Terminate the exploration in areas that do not justify development; and
f) Extend the duration of the exploration and/or production phase upon
approval from the ANP.
Production Sharing Agreement (PSA)
The PSA is often utilized in areas of “low” exploratory risk. In Brazil, this type of contract
is granted for the exploration and production of oil and gas in the pre-salt polygon49
and strategic
areas.50
These rights are limited to the exploration and production of hydrocarbons and specifically
exclude any other natural resource.
The PSA will be entered into between the government, through the Ministry of Mines and
Energy (MME), the ANP as a regulatory body and supervisor, Petrobrás, Empresa Brasileira de
Administração de Petróleo e Gás Natural S.A.–Pré-Sal Petróleo S.A. (PPSA),51
and the bid winners.
The PPSA represents the government’s interest in PSAs and bears no risk in the exploration
and production of the hydrocarbons. The role of the PPSA includes managing the contracts entered
into by the MME. In that capacity, the PPSA represents the government in matters related to the
consortium, acts as the government’s agent in operational committees, evaluates technical and
economic data, enforces the local content requirements under the contract, monitors and audits the
project, and provides its findings to the ANP.52
48
See Law No. 9,478/97, Chapter V, Sections I and V and tender protocols for granting concession contracts. 49 See article 2, IV of Law No. 12,351/2010–Pre-salt area: subsurface region formed by a vertical prism of undefined
depth, with a polygonal surface defined by the geographical coordinates of their apexes established in the annex hereof,
as well as other regions to be demarcated by Executive Branch act, according to the evolution of the geological
knowledge. 50
See article 2, V of Law No. 12,351/2010–Strategic area: region of interest for national development, to be demarcated
by Executive Branch act, characterized by low exploratory risk and high potential for the production of oil, natural gas,
and other fluid hydrocarbons. 51
The PPSA was created by Law No. 12,304/2010. 52
See article 4, I of Law No. 12,304/2010.
12
The PPSA also has a duty to oversee the sale of the government’s share of the hydrocarbons
under the PSA. Under this provision of the law, the PPSA is obligated to verify compliance by the
consortium concerning its obligation to develop a commercially viable field. In addition, the PPSA
monitors operational costs and sales, analyzes data provided by the consortium and the ANP, and
represents the government when entering into unitization agreements in pre-salt and strategic
areas.53
The rights under the PSA can be granted directly to Petrobrás under an exemption to the
bidding process or to other companies through the bidding process.54
Under the PSA, Petrobrás is
the sole operator, and it must also maintain a minimum 30 percent interest. However, Petrobrás can
increase its percentage of interest by participating in the bidding process.55
Petrobrás can assign a portion of the interest it has obtained through bid, but not its
minimum interest of 30 percent.56
A member of the consortium can transfer its interest in the PSA.
However, this transfer is subject to a first right of refusal by the others in the consortium.57
Assignment of rights and obligations must be expressly and previously authorized by the MME.
The government does not assume any risk under a PSA. However, the government, through
the creation of a specific fund allowed by law, can participate financially in a PSA, and through that
fund the government will be liable for its corresponding share of the risk as allocated under the
agreement.58
The companies that are parties to the PSA are obligated under the agreement to explore and
produce hydrocarbons at their own risk and cost. However, after the declaration of commerciality,
the companies are allowed to recover some of their cost by retaining a share of the oil, referred to as
cost oil. The first PSA model states that the amount of oil attributed to cost recovery is limited to 50
percent of the gross amount of production, calculated on a monthly basis for the first two years, and
30 percent of production for the following years. In the event the costs have not been recovered
within the first two years, the consortium may retain 50 percent of the oil produced the following
year, on a monthly basis and only under certain circumstances.59
The remainder of the oil
produced—profit oil—is split between the government and the companies according to the PSA.
The PSA is similar to the other types of agreements in terms of having two phases:
exploration and production. The law does not define the duration of the exploration phase; however,
the first PSA allowed four years for the exploration phase.60
The contract is for a period of 35
years.61
Under the PSA, the companies have the obligation to:
a) Enter into a mandatory consortium with Petrobrás and PPSA;62
b) Pay signature bonus, royalties, and a portion of the profit oil;
c) Perform a minimum exploratory program;
d) Inform the ANP of the discovery of both oil and natural gas, as well as any
other natural resource it may locate during exploration;
53
See article 4, II of Law No. 12,304/2010. 54
See article 8 of Law No. 12,351/2010. 55
See article 14 of Law No. 12,351/2010. 56
See article 31 sole paragraph of Law No. 12,351/2010. 57
See article 31, III of Law No. 12,351/2010. 58
Articles 5 and 6 sole paragraphs of Law No. 12,351/2010. 59
Information retrieved from the first PSA. 60
See item 10.1 of the first PSA. 61
See article 29, XIX of Law No. 12,351/2010. 62
See article 20 of Law No. 12,351/2010.
13
e) Provide the ANP with a declaration of commerciality upon locating a
commercially viable deposit;
f) Split the profit oil with the government on a monthly basis;
g) Use best industry practices to conserve reservoirs and other natural resources;
h) Fulfill local content obligations;
i) Remove the equipment that is not the object of reversion, and do
environmental restoration of the property in case of termination of the
concession; and
j) Indemnify the government for any claims it may incur as a result of the
activities of the company.
The companies, under the PSA, have the right to:
a) Explore for and produce oil at their own risk in the area granted;
b) Allocate the risk involved with their consortium partners;
c) Withdraw during the exploration phase, provided the minimum exploratory
program has been met;
d) Own a fraction of the oil produced (profit oil) upon establishment of
commercial viability; and
e) Reimbursement, through cost oil,63
for costs related to the exploration,
evaluation, development, and production upon establishing production in a
commercially viable field.
Onerous Assignment Agreement
Under the onerous assignment agreement, the government is allowed to assign directly to
Petrobrás the right to explore for and produce hydrocarbons, up to five billion barrels of oil
equivalent, in areas not located in the pre-salt.64
The activities performed by Petrobrás occur at its
own risk and expense. Petrobrás cannot assign its rights under an onerous assignment agreement.65
Upon obtaining production, Petrobrás owns the oil it has recovered, subject to a government royalty
and applicable taxes.
The onerous assignment agreement has a duration of 40 years, and under certain
circumstances, it can be renewed for an additional five years. In terms of the phases, it is similar to
the other types of agreements having two phases: exploration and production. The exploration
phase of this type of contract lasts up to four years, and the production phase lasts for the remaining
duration of the contract. Petrobrás is required to meet local content requirements under both the
exploration and production phases of the agreement.
The onerous assignment agreement terminates when Petrobrás recovers 5 billion barrels of
oil, the time as allotted under the agreement lapses, or other terms contained in the agreement itself
are met.
4. How does unitization change rights under an agreement?
United States
The basic idea behind unitization is to protect a reservoir that is common to more than one
lease. The dangers from which the reservoir is to be protected are drilling and producing practices
63
See article 2 II of Law No. 12, 276/2010. 64
See article 1 paragraph 2 of Law No. 12, 276/2010. 65
See article 1 paragraph 6 of Law No. 12, 276/2010.
14
that may lead companies to produce too quickly or to drill unnecessary wells in an effort to produce
more than the competitor across the lease line. To avoid that danger and serve that purpose, a
unitization agreement has a provision that “conforms” the provisions of the individual leases in the
unit to those of the unitization agreement. This means that the language of the unit agreement
trumps inconsistent language in the lease. For example, the language in a lease that allows the
lessee to enter upon the surface of the lease for drilling operations is extended to allow the operator
of the unit to come on the surface of any lease within the unit to drill a well on any other lease
within the unit. Stated more generally, the idea is that drilling or producing from any lease within
the unit is treated as drilling or producing from every lease in the unit; production from a lease from
the western side of a unit, for example, is treated as production from leases on the eastern side, and
all those leases are treated as being in their secondary term.
In American practice, however, protecting common reservoirs is not the only reason to
unitize leases. There are circumstances where it is more efficient to gather several leases into a unit,
especially a unit that can encompass an entire subsurface geological structure, to test which parts of
the structure might be best for more extensive drilling. These units are called “exploratory units.”
Balanced against the benefits of an exploratory unit are concerns that lessees in the unit may
unnecessarily “lock up” prospects within the boundaries of the unit, meaning that lessees in the unit
can hold on to those prospects without drilling them. Other companies might wish to develop these
prospects more quickly than the unit lessees wish to do.
To limit the risk of lockup, the OCS exploratory unit agreement includes the concept of the
“participating area.” Before the unit operator may begin producing the first successful well, it must
propose to DOI the outline of a participating area. That area is to include “all land reasonably
proven to be productive of unitized substances in paying quantities….”66
The participating area is to
be described “in parcels no smaller than ¼ x ¼ x ¼ blocks,” meaning that a parcel must contain at
least 90 acres. Only the leases that are within a participating area are entitled to share the production
from the well.
As further wells are drilled successfully, the participating area can be expanded, or
additional participating areas can be created.67
Participating areas can also shrink if lands are later
determined to be “proven not to be productive” of oil or gas. On the fifth and 10th anniversaries of
the initial participating areas, DOI will determine whether there are leases in the unit that have no
part of any participating area in them. If there is such a lease, that lease is “eliminated automatically
from the unit area.”68
Within participating areas that cover parts of two or more leases, production from wells
must be allocated to each participating lease. The model exploratory unit agreement contemplates
two methods of allocation. One is to look only at the surface acreage within the participating area.
For example, if 360 acres are in Lease A and 3,240 acres are in Lease B, then only 10 percent of the
production will be allocated to Lease A. The second method of allocation is volumetric. In this
method, reservoir engineers calculate the volume of oil and gas originally in place in the
participating area, measured in “net acre-feet,” and determine what percentage of the volume is in
each of the leases in the participating area.69
The volumetric method has been the overwhelming choice among unit participants, at least
in the Gulf of Mexico. Unfortunately, the most recent publicly available data on practice in the Gulf
66
Model Unit Agreement for Exploration, Development, and Production Units (“Model Unit Agreement”) § 11.1. 67
Model Unit Agreement §§ 11.2 & 11.3. 68
Model Unit Agreement § 13.1. 69
Model Unit Agreement § 12.1.
15
comes from testimony given in a hearing in 1982. At that time, there were 100 units in the Gulf. Of
those, 82 used the volumetric method, 17 used surface acreage, and one used a formula that
considered the volume originally in place as well as the relative shares of actual production during a
given period of time, giving equal weight to each factor.70
Brazil
Due in part to the relatively recent overhaul in Brazilian oil and gas law, the law has not
been fully developed in the area of unitization agreements. It was not until 1997 that the Petroleum
Law71
was promulgated regulating the national energy policy and activities in the oil and gas sector.
The Petroleum Law mentioned, on article 27 (currently revoked), that the unitization agreement
should be signed in case of oil fields extending over adjoining blocks with different
concessionaires. If the parties could not agree upon the terms of the unitization agreement, ANP
would have to make a decision regarding the allocation of the rights and obligations upon the
blocks. At this time, the rights to explore for and produce oil and gas were granted through
concession agreements.
In 2010, other laws were promulgated,72
creating additional methods—PSAs and onerous
assignment agreements—to award rights to companies to explore for and produce oil and gas in
Brazil. Article 27 of the Petroleum Law was then revoked by Law No. 12,351/2010,73
in which
there is a chapter dedicated to the unitization agreement.
According to the provisions of Law No. 12,351/2010, the parties have to enter into a
unitization agreement if there is a deposit that surpasses the contracted area or the area under
concession. The law now makes a reference to the “deposit” instead of mentioning the “field” when
addressing unitization. Among other provisions, this law also stipulates that the development and
production of the deposit that extends to another area will be put on hold until ANP approves the
terms reached by the parties in the unitization agreement. Under exceptional circumstances, ANP
can authorize the operation of the field not to be suspended.74
Brazil now has a mix of three different regimes in place: concession, production sharing,
and onerous assignment agreements. As a result, there are three different types of contracts
concerning exploration and production of oil and gas, each with different rules. Because of that, it
becomes a challenge for companies to harmonize the rules pertaining to their contracts when
entering into a unitization agreement.
70
Sun Oil Co., 91 IBLA 1, 29 (1986). 71
Law No. 9,478/97. 72
Law No. 12,351/2010; Law No. 12,226/2010. 73
Law No. 12,351/2010, which regulates the exploration and production of oil, natural gas, and other fluid
hydrocarbons under the production sharing regime in the pre-salt areas and in strategic areas; it creates the Social Fund
—FS—and regulates its structure and funding sources and amends provisions of Law No. 9,478, of August 6, 1997. 74
See article 41 of Law No. 12,351/2010.
16
Example of Areas Under Different Regimes
Source: http://www.petrobras.com.br/pt/nossas-atividades/areas-de-atuacao/exploracao-e-producao-de-
petroleo-e-gas/marco-regulatorio/
Brazilian law provides the minimum requirements that a unitization agreement must contain,75
but
it does not provide all the guidelines for the companies to make the different rules compatible.
Once the companies enter into a unitization agreement for the areas that contain the shared
deposit, the unitization agreement may change some of the rights that were previously granted to
those companies. Those changes may occur because in some cases the areas in the shared deposit
are under different types of contracts. Consequently, the unitization agreement will have to
accommodate the rights and obligations of those areas, creating an agreement that pertains to just
the shared deposit. In regard to the divisible obligations, the rules will be applied according to the
75
ANP Resolution No. 25/2013, article 13, states, “The Individualization of Production Agreement (Unitization
Agreement) shall contain at least the following information:
I - the identification of the shared deposit;
II - the definition of individualized area with the delimitation of the polygons;
III - the operator for the shared deposit;
IV - rights and obligations of the Parties involved;
V - the participations in the shared deposit;
VI - the possibility of Redeterminations with the criteria, conditions, terms, limits, and quantity that
will be applied;
VII - local content rules;
VIII - the obligations of each Party for payment of their participations, Government Revenue and
Third Party;
IX - the duration of the individualization of production agreement;
X - the dispute settlement mechanisms;
XI - the Development Plan for the Shared reservoir object of the unitization agreement.”
17
parties’ original contracts. However, the terms of the indivisible obligations will be set in
accordance with ANP regulations.76
Some of the more contentious issues that require agreement by the companies include:
a) The percentage of participation in the shared deposit for each part—
Article 13, paragraph 2, of ANP Resolution No. 25/2013 states that the
preferred method to be used to define the participation interest of the parties
is the proportion of the original volume of oil equivalent in the shared deposit
contained in each of the areas under the contract. However, the parties can
submit other criteria for evaluation and approval by the ANP. Some of the
other methods used in establishing the parties’ interest in the shared deposit
include the parties’ respective shares based upon their surface interest in the
shared deposit, relative volume in the reservoir, relative volume of the pore
space, volume in place, and recoverable volume. Although other methods can
be utilized to define the parties’ interest in the shared deposit, when
analyzing all five “individualization of production agreements” (AIPs)77
approved by ANP (Albacora and Albacora Leste,78
Mangangá and
Nautilus,79
Camarupim and Camarupim Norte,80
Lorena and Pardal,81
and
Xerelete and Xerelete Sul82
), the original volume of oil equivalent was the
method applied in those AIPs, suggesting that this is the criterion that
companies prefer to use offshore of Brazil.
b) Royalties—Under the different types of contracts, there are different royalties
retained by the government. Under the concession agreement, the royalties
are usually 10 percent, subject to reduction to a minimum of 5 percent,
depending upon the risk involved, while under the PSA, the royalties are
usually 15 percent, and the royalties retained by the government under an
onerous assignment agreement are usually 10 percent. An illustration of the
difficulties posed by differing royalty rates has already arisen. There is a
shared deposit involving the fields of Lula (under concession agreement), Sul
de Lula (under onerous assignment agreement), and an area that was not
granted yet (no contract). On June 19, 2015, in response to this circumstance,
76
See article 13, paragraph 6 of ANP Resolution No. 25/2013. 77
The term AIP is explained in the answer to Question 6 below. 78
It was the first AIP approved by ANP. The approval for the AIP involving Albacora (concession agreement No.
48000.003703/97-02) and Albacora Leste (concession agreement No. 48000.003895/97-67) was made on December 28,
2007, through RD 823/2007. 79
AIP involving Mangangá (concession agreement No. 48000.003560/97-49) and Nautilus (concession agreement No.
48000.003552/97-11) was approved by ANP on October 7, 2008, through RD 737/2008. 80
AIP involving Camarupim (concession agreement No. 48000.003535/97-00) and Camarupim Norte (concession
agreement No. 48610.010724/2001) was approved by ANP on June 2, 2009, through RD 472/2009. 81
AIP involving Lorena (concession agreement No. 48000.003807/97-08) and Pardal (concession agreement No.
48610.009227/2002) was approved by ANP on December 15, 2009, through RD 1190/2009. In 2012, through RD
368/2012, ANP approved the concessionaires of Pardal-UTC Engenharia S.A. and Potióleo S.A to transfer their rights
and obligations (participation of 50 percent and 50 percent, respectively) to Petrobrás. A new concession agreement—
48610.009227/2002A (BT-POT-10A)—was also issued to the Pardal field. Since Petrobrás now owns 100 percent of
both fields, it was then necessary for Petrobrás to sign a CIP instead of an AIP. This CIP for the shared deposit in the
Lorena and Pardal fields was approved by ANP on January 22, 2015, in RD 45/2015. 82
AIP involving Xerelete (concession agreement No. 48000.003544/97-92) and Xerelete Sul (concession agreement
No. 48610.010727/2001) was approved by ANP on October 31, 2013, through RD 1152/2013.
18
ANP issued guidelines through RD 425/2015 for the preparation of the AIP
involving these fields that defined royalties of 15 percent for that area that
has not been granted.
c) The company that will act as the operator in the shared deposit—The
unitization agreement will indicate the operator of the shared deposit,
according to article 33 of Law No. 12,351/2010. However, because Petrobrás
is statutorily required to be the sole operator under a PSA, the law is unclear
about whether Petrobrás is also required to be the sole operator for all the
shared deposits involving pre-salt or strategic areas. It is unreasonable to
conclude that Petrobrás must be the operator for all these areas. The
prevailing understanding is that any company can be the operator in the
shared deposit.
d) Allocation of costs and reimbursements—Some of the incurred costs and
investments that were made by one party prior to signing the unitization
agreement can bring discord between the parties at the time of discussing
reimbursements. Sometimes one party can allege that the incurred costs were
part of the risk of the activity or they were not part of the decision in which
the expenditure was generated.
e) Special participation—It is the amount payable in case of a production of a
large volume of oil. Special participation is applicable only to concession
agreements and not under PSAs or onerous assignment agreements. In the
case of a shared deposit, the special participation is based on the net revenue
of the production and the whole inspected production volumes of each field.
The unitization agreement will define the allocation of each party’s share
based on the net revenue of production in the base period and consequently
the special participation. Special participation of the shared deposit that
passes to areas under different regimes should be designated only to the
portion of the field under the concession agreement, and it should be
segregated from the total shared deposit: the inspected production volume,
the gross revenue of production, and the expenses incurred in exploring and
producing the area.83
f) Local content—There are different rules for local content under the different
types of contract. Even under the concession agreement, depending upon the
bidding round of the contract, there is a possibility that there are different
percentages of local content, due to local content being one of the criteria
used when considering the bid. The AIP involving Camarupim (block BES-
100) and Caramupim Norte (block BM-ES-5), approved by ANP in RD
599/2009, provides an example. Although this AIP involved areas under the
same regime—a concession agreement—those agreements had different rules
pertaining to local content. For block BES-100, the minimum percentage of
local content to be fulfilled was 0 (zero), while for block BM-ES-5, the
parties had to fulfill the minimum of 30 percent of local content. Given the
difference in the minimum percentage of local content for the areas under
this unitization agreement, the AIP required that the parties should observe
the minimum of 20.85 percent for the contracting of goods and services
83
ANP Resolution No. 12/2014, article 9, paragraphs 1 and 2, a, b, c.
19
related to the operations of the shared deposit. This minimum of 20.85
percent was reached by using the weighted average (“media ponderada”) of
the minimum percentage of local content that was required for blocks BES-
100 and BM-ES-5.
Source: ANP
In conclusion, due to the complex nature of the three different types of agreements, and the
relatively new implementation of Brazilian oil and gas laws, unitization agreements remain an
unsettled issue in the Brazilian regulatory framework. Nevertheless, the Brazilian government has
been working to create rules to address these concerns.
5. How large an area may be governed by one unitization agreement?
United States
By statute, the secretary of the interior is given broad discretion to issue regulations for,
among other things, unitization.84
The statute does not limit the size of the area governed by a
unitization agreement. Through regulation, the secretary has not set a numerical limit on the acres
or leases that can be included in a unit agreement. The regulation does, however, limit the size of
the unit to the fewest leases “that will allow the lessees to minimize the number of platforms,
facility installations, and wells” needed for efficient development of the area.85
Although two is the
minimum number of leases needed to unitize an area, unit areas can be significantly larger. For
84
43 U.S.C. § 1334(a)(4). 85
30 C.F.R. § 250.1302(c).
20
example, the Santa Ynez unit, in the Santa Barbara Channel offshore of California, is composed of
16 leases.
Source: http://www.boem.gov/pacific-ocs-map/
In the Gulf of Mexico, as of June 2013, 593 leases were unitized under 186 unit agreements.
Although a few of those units are composed of more than 10 leases each, the average for the Gulf is
approximately three leases per unit. 86
Brazil
There is no limit to the size of the area under the unitization agreement. The size of the
shared deposit is what determines the area that will be governed by the unitization agreement.
6. May the government require two companies to sign a unitization agreement?
United States
Yes. DOI may compel its lessees to join a unitization agreement.87
But it may do so only if
the leases are underlain by a common reservoir of oil or gas, and if DOI determines that operations
by competing lessees might damage the reservoir, result in unnecessary drilling, or interfere with
the rights of the parties to produce a fair share of the oil or gas in the reservoir.
Additionally, DOI may compel unitization to protect its royalty interest in the leases.88
An
example will clarify what the regulation means. Suppose, for example, that a reservoir of oil
underlies two leases. Suppose further that geologists have determined that each lease’s share of the
86
Federal Offshore Unitization An Overview - Gulf of Mexico OCS Region. Author: Mark Hanan;
http://www.bsee.gov/uploadedFiles/BSEE/BSEE_Newsroom/Speeches/2013/OCSAB_2013_Federal%20Offshore%20
Unitization-An%20Overview.pdf. 87
30 C.F.R. § 250.1301(b). 88
30 C.F.R. § 250.1301(b)(3).
21
oil originally in place happens to be 50 percent. One lease has a royalty rate of only 12.5 percent,
the other 20 percent. It is in the government’s interest to have as much of the reservoir’s oil
produced from wells on the lease with the 20 percent royalty rate. But if the lessee of the 12.5
percent lease begins operations first or is producing 80 percent of the oil, DOI will perceive that it
will make less money in royalties unless it forces the parties to unitize the reservoir.
DOI has compelled the creation of 18 units.89
A few of them have been subject to
administrative appeal and judicial challenge.90
From DOI’s regulations and this handful of cases, some key points emerge about compelled
unitization in the OCS. First, the mere fact that a common reservoir underlies two or more leases
does not mean that the reservoir must be unitized. Instead, DOI must find that, unless a unit is
compelled, lessees will engage in unneeded drilling or will drain the reservoir in a way that will
unnecessarily leave oil or gas in the ground.91
Second, DOI need not first exhaust other methods of protecting the reservoir before
compelling a unit. For example, in Placid Oil Co., the common reservoir in question was primarily
oil, but at the top of the reservoir there lay a “cap” of natural gas. The expansion of that gas
provided the energy to push oil into the wellbores in the reservoir. Underneath the oil lay water,
which rose into the reservoir as the oil above was produced. As it happened, however, nearly all of
the gas cap lay on Placid’s side of the lease line. Placid had an incentive to produce the gas rapidly,
but to do so would have prematurely reduced the energy needed to produce the oil. Placid argued
that it first should have been allowed to limit its production of gas in lieu of unitization. DOI ruled
that the law “does not require that unitization be imposed only as a last resort.”92
Indeed, DOI often regards unitization as the method of first resort. In Tenneco Oil Co., DOI
encountered a pair of large natural gas reservoirs under five lease blocks, into which 50 producing
wells had been drilled. As the reservoirs were produced, each of the wells detected a corresponding
drop in pressure, indicating that the wells were all in what reservoir engineers call “pressure
communication.” Although Tenneco Oil Co. did not pose the risk that rapid production might
reduce the ultimate total production from the reservoirs, it did create an incentive for the competing
lessees to drill additional wells that would merely hasten the depletion of the reservoirs, not enlarge
their ultimate production volumes. DOI found unitization the ideal solution.
Unitization is particularly appropriate in a situation involving a large common
reservoir where, as here, the operator of a lease overlying a small part of the original
reserves drills early and aggressively along the lease boundary. In the absence of unitization,
development of the leases overlying the remainder of the reservoir would have become a
89
Federal Offshore Unitization An Overview - Gulf of Mexico OCS Region. Author: Mark Hanan;
http://www.bsee.gov/uploadedFiles/BSEE/BSEE_Newsroom/Speeches/2013/OCSAB_2013_Federal%20Offshore%20
Unitization-An%20Overview.pdf. 90
The most contentious was the compelled unitization of the so-called “P sands” beneath Vermilion blocks 320 and
321. This resulted in three published opinions of the Interior Board of Land Appeals, an unpublished ruling of an
administrative law judge, and one judicial opinion. Sun Oil Co., 42 IBLA 254 (1979); Sun Oil Co., 67 IBLA 80 (1982);
Sun Oil Co., 91 IBLA 1 (1986), aff’d sub nom. Clark Oil Prod. Co. v. Hodel, 667 F.Supp. 281 (E.D. La. 1987). Other
cases have addressed the unitization of the “J2 sands” underneath the Eugene Island block 330 field, Texaco, Inc., 51
IBLA 332 (1980); the “C6-RA sands” and the “JS A-1 sands” underneath Ship Shoal blocks 206 and 207, Placid Oil
Co., 46 IBLA 392 (1980); and the “3,200-foot sands” and the “3,500-foot sands” beneath West Cameron blocks 532,
533, and 534, and East Cameron blocks 281 and 298, Tenneco Oil Co., 57 IBLA 85 (1981). More recently, Taylor
Energy Co., 148 IBLA 286 (1999), addressed an unsuccessful attempt by a lessee to compel a unit over the objections
of the department’s Minerals Management Service. 91
As noted above, the department may also compel a unit to protect the government’s royalty interests. 92
Placid Oil Co., 46 IBLA at 395.
22
race designed to protect the opposing interest[s] of the lessees. Development plans would
have been geared to the protection of correlative rights instead of being oriented toward the
maximum production of hydrocarbons from the common reservoir with the least number of
wells. Accordingly, unitization prevented the drilling of unnecessary wells and was in the
interest of conservation.93
Third, the greatest policy challenge in compulsory unitization is not whether to compel a
unit, but how to allocate the production. In voluntary units, most lessees have agreed to allocations
based on the original volume of oil or gas in place. But that formula is not a right guaranteed by the
lease itself, for the lessee receives not ownership of the oil or gas in place but only a fair
opportunity to produce it.94
Should some reward be given to the first lessee to establish production
in the common reservoir? Should some reward be given to the one with the luck or ingenuity that
has allowed it to drill the most productive wells?
DOI first confronted this question in Texaco, Inc. There, a common reservoir had been
penetrated by 13 producing wells. The first began production in January 1974, the last (Texaco’s) in
December 1976, nearly three years later. DOI allocated production based on original gas in place,
giving Texaco less than 4 percent of the production. But Texaco’s well was prolific, producing 26
billion cubic feet of gas before it “watered out” three years later. Noting the high national demand
for natural gas, Texaco argued that original reserves should not be the sole factor used in the
allocation, and that the relative share of production should be included and given equal weight.95
On appeal, the Interior Board of Land Appeals disagreed. The board noted that Texaco’s well was
the last of 13, and no evidence showed that Texaco’s well had increased the total ultimate recovery
from the reservoir.96
The board concluded there was no persuasive reason to depart from an
allocation based on the original gas in place.
At about the same time, however, DOI did use a hybrid allocation for another compelled
unit. In Sun Oil Co., DOI addressed a common reservoir in which eight wells were producing, three
owned by Sun Oil, five by Shell on the other side of the lease line. Shell proposed to drill additional
wells into the reservoir. DOI decided the additional drilling was unnecessary, would not increase
the total ultimate production from the reservoir, and posed unneeded risks to the environment. It
compelled a unit.
DOI then turned to the question of allocation. DOI determined that 81 percent of the
reservoir’s reserves underlay Shell’s lease, 19 percent underlay Sun’s. But during a six-month
period prior to unitization, Sun’s wells had produced 55 percent of the total production. DOI
decided Sun should be rewarded in the allocation for the superior productivity of its wells. DOI
chose a formula that gave some weight to well productivity, resulting in Sun receiving 32 percent—
not 19 percent—of the total production from the reservoir.97
Shell and Sun both acquiesced to DOI’s decision to use a hybrid formula instead of relying
solely on reserves originally in place. Shell defended DOI’s outcome; Sun challenged DOI’s failure
to give greater weight to the productivity of Sun’s wells. Because of the positions of the parties in
the administrative appeal, the Interior Board of Land Appeals did not have occasion to elaborate on
93
57 IBLA at 88. 94
See, e.g., Sun Oil Co., 91 IBLA at 32 (“Admittedly, as a historical matter, the law of capture recognized fee
ownership as providing, at most, merely an equal opportunity to produce from a common reservoir.”) (emphasis in
original). 95
51 IBLA at 344-45. 96
51 IBLA at 354-55. 97
91 IBLA at 23-24.
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when and why it is appropriate to reward well productivity in the allocation of production under the
unit agreement.
Brazil
Yes. Companies must sign a unitization agreement once it has been determined that there is
a deposit that extends beyond the limits of the block in which it was granted the right to explore for
and produce oil and gas.
The rule of capture states that the oil or gas, extracted from a well drilled in an area in which
one has the right to explore for and produce it, will be owned by the one that first extracts it even if
it migrates from another owner’s property. According to José Alberto Bucheb,98
since the
introduction of Brazilian Petroleum Law No. 9,478/97, article 27 (which has since been revoked), it
was stated that once it was determined that a reservoir extended beyond the limits of the blocks
under concession, the parties involved would have to enter into a unitization agreement. That
same position remained with Law No. 12,351/2010, article 33, which rewrote article 27 of the
Petroleum Law, as ANP Resolution No. 25/2013. So, in Brazil, there is a practically
unanimous understanding that the rule of capture is not allowed under interpretation of the
applicable law. Article 33 of Law No. 12,351/2010 states, “The unitization procedure for
production of oil, natural gas and other fluid hydrocarbons shall be implemented when it is
observed that the deposit extends beyond the block granted or contracted under the production
sharing regime.”
According to Law No. 12,351/2010 and ANP Resolution No. 25/2013, the concessionaire or
contractor must notify the ANP about the existence of a shared deposit within 10 days of the
discovery. The ANP will notify the parties involved, after which they can confirm or deny the
presence of the deposit that extends beyond the boundaries of their contracts. In the event
it is confirmed that there is a deposit extending into adjacent areas, the ANP will set up a timeline
for the parties to enter into a unitization agreement involving the shared deposit. This timeline will
be decided by the ANP after it takes into account the different conditions under which the
unitization agreement will be finalized. Unitization agreements involving different parties on areas
under different contracts, or areas that were not yet granted, are more complex and consequently
require more time to complete the agreement than in areas under the same regime. The unitization
agreement does not extend to the entire block but is limited to the deposit in which the parties have
a shared interest.
The unitization process usually encompasses three stages: pre-agreement, unitization
agreement, and redetermination. The pre-agreement is not required, but it is possible for the parties
to enter into it due to the complex nature of a unitization agreement and the costs and time involved
when determining the allocation of the shared reservoir among the parties. The pre-unitization
agreement is usually made before the declaration of commerciality, and at that time, the companies
may not have all of the information required to enter into a unitization agreement. Because of that,
the primary reason for the pre-unitization agreement is to acquire additional data to make a better
assessment of the shared reservoir in order to define the percentage owned by each of the parties. In
addition, it addresses the confidential nature of the information that is to be exchanged by the
parties concerning their findings in the shared deposit. If there is a pre-unitization agreement, the
companies are required to send a copy of it along with the discovery evaluation plan to the ANP.99
98
Telephone interview with José Alberto Bucheb, general manager, Corporate University at Petrobrás (February 9,
2015). 99
See Resolution No. 25/2013, article 7, sole paragraph.
24
In Brazilian practice, the parties will sign either an individualization of production
agreement (AIP)100
or an individualization of production commitment (CIP).101
The former is used
when there are different companies or consortiums owning other than identical interests in blocks
containing the shared deposit. The latter is used when the same companies or consortiums own
identical interests, under different legal regimes, in separate blocks containing the shared deposit.
The unitization agreement involving shared deposits situated outside the pre-salt polygon or
outside areas that are considered strategic and that extend to areas not yet granted will be signed
with the ANP (representing the government).102
However, on those areas that were not yet granted
and have the shared deposits extending into the pre-salt or in a strategic area, the PPSA will be the
one representing the government when signing the unitization agreement.103
Once the unitization agreement is signed, the parties submit it to the ANP for approval. This
agreement is attached to the parties’ original contract that granted the right to explore for and
produce oil and gas in the area. If the parties who have an interest in the shared deposit cannot agree
upon the terms of the unitization agreement, the ANP will set the terms for them.104
The parties will
then be required to enter into the agreement as determined by the ANP. Failure of the parties to
participate in the unitization agreement results in the termination of the contract for the
noncomplying party for the entire block.105
However, it is important to note that once the ANP has
set the terms of the agreement, this is an administrative decision subject to judicial review.
Once the unitization agreement is in place and it is necessary to revise the percentage of
participation interest of the parties that was previously set in the unitization agreement, the parties
will use what was established under the terms for the redetermination. The adjustment of the
participation interests is based on the acquisition of new data that results in a better understanding
of the shared deposits. The methods for reaching these redeterminations can be freely selected by
the companies in the unitization agreement. The companies will usually stipulate in the unitization
agreement the situations in which they can call for the redetermination, the time frame for the
redetermination to occur, the number of the determinations allowed, and the methods for resolving
disputes. They should also address whether or not the redetermination will have a retroactive effect.
However, in the case of redetermination, there is no retroactivity regarding government takes on the
payments already made.106
Although redeterminations are usually stipulated to by the companies, the ANP can also
require redeterminations when technically justifiable. In theory, decisions involving
redeterminations are retroactive to the beginning of the unitization agreement. Because of that, it
can be a difficult task for companies to review all contractual participation after years of exploration
activities. Oftentimes, this can result in the immediate shift in expenses already incurred from one
party to another, while the gains from production are usually distributed to the benefiting party
through future increases in production.
While a redetermination agreement seems like a practical means of allocating the parties’
rights and responsibilities after acquiring further data from production, there are several
disadvantages to redetermination agreements that can lead to a time-consuming and expensive
100
See article 4 of the ANP Resolution No. 25/2013. 101
See article 6 of the ANP Resolution No. 25/2013. 102
See article 5, paragraph 1 of the ANP Resolution No. 25/2013 and article 36 of Law No. 12,351/2010. 103
See article 5, paragraph 2 of the ANP Resolution No. 25/2013 and article 37 of Law No. 12,351/2010. 104
See article 29 of the ANP Resolution No. 25/2013 and article 40 of Law No. 12,351/2010. 105
See article 34 of the ANP Resolution No. 25/2013 and article 40 sole paragraph of Law No. 12,351/2010. 106
See ANP Resolution No. 25/2013, article 26 sole paragraph.
25
process. Redetermination of a unitization agreement requires a vast amount of technical data and
the use of experts to establish the revised allocation. The parties do not always agree upon the
findings or experts, which can result in legal disputes.
7. How long will a unitization agreement remain in force?
United States
A unitization agreement remains in force until no more oil or gas is being produced from a
well within the unit and no more drilling is occurring.107
A unitization agreement may also remain
in force without production or drilling if DOI has granted a suspension of operations or suspension
of production.108
If none of these conditions is satisfied, then the unit agreement expires by its own
terms. A unitization agreement may also be terminated by DOI upon a request by the owners of “a
majority of the working interests in each lease or portion thereof committed to this Agreement.”
DOI is empowered to disapprove the request.109
If a unitization agreement expires or terminates, the individual leases comprising the unit
will also expire unless (1) the given lease is still in its primary term, (2) the lessee begins (or
continues) drilling or well-reworking operations on the lease within the time permitted by
regulation, or (3) DOI grants a suspension of operations under the regulations.110
Brazil
The duration provided for in the unitization agreement should take into consideration the
original duration granted to each party under its individual agreement. The ANP, at its sole
discretion, may extend the duration of the phases in the areas of the shared deposit when the parties
do not have similar timelines in their original contracts.111
Final Observations
Much of Brazil’s law governing unitization is yet to be developed. At present, however,
Brazil and the United States differ on a main point of policy. Brazil requires unitization of all
reservoirs that are found to be common. The United States will require unitization only if a
common reservoir is “competitive,” meaning that there is at least one well on each side of the lease
line. And even then, the United States will compel unitization of a competitive reservoir only if it is
needed to serve some greater good: maximizing ultimate recovery of oil or gas, preventing
unneeded drilling, or ensuring the government’s royalty interest is protected.
On the issue of how production will be allocated, one can predict that it is in the AIPs—
those unitization agreements governing situations when the interests of the parties on each side of
the line are not identical—that conflict may arise over whether more than just the original share of
reserves should be considered. The fact that Brazil requires unitization of any common reservoir
suggests that Brazilian law is already tilted toward the view that those that receive PSAs or
concession agreements have a right to the oil and gas within their agreement area, not just to a fair
opportunity to produce it. And while ANP Resolution No. 25/2013 indicates that the agency might
consider alternatives, allocations based on original oil and gas in place are preferred. So Brazilian
107
Model Unit Agreement, Article XVI, paragraph 16.1. 108
Id. See also 30 C.F.R. § 250.1301(g). 109
Model Unit Agreement, Article XVI, paragraph 16.2. 110
30 C.F.R. § 250.1301(f). 111
See ANP Resolution No. 25/2013, article 13, paragraphs 4 and 5.
26
law may be more resistant than American law to rewarding well productivity to those that discover
the reservoir in the first instance.
ContactsL. Poe Leggette Denver [email protected] T 303.764.4020
Laura J. McMahonHouston T 713.646.1301 [email protected]
Sashe D. DimitroffHoustonT 713.646.1320 [email protected]
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