exploration plays identified offshore cuba in 24 … prospectivity... · resource and risk...
TRANSCRIPT
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EXPLORATION PLAYS IDENTIFIED OFFSHORE
CUBA IN 24 LICENSE BLOCKS.
1
Osvaldo López Corzo
(Exploration Manager, CUPET)
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1. UPDATE OF CUBAN OIL AND GAS PRODUCTION.
2. PETROLEUM SYSTEMS AND PLAY TYPES.
3. GENERAL CHARACTERISTICS OF BIDDING BLOCKS.
4. RESOURCE AND RISK ASSESSMENT.
AGENDA:
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OIL PRODUCTION IN 101 YEARS
1. PRESENT DAY SITUATION OF CUBANOIL & GAS PRODUCTION…….volumesand milestones.
PRODUCTION MAINLY FROM FRACTURED OPHIOLITES AND VOLCANICS.
1917-1967 (350-450 bbl/d)
DISCOVERY AND DEVELOPMENT OF OIL FIELDS IN FOLDED BELT, FRACTURED CARBONATES
1968-1998 (12,000-20,000 bbl/d)
CRUDE OIL
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• More than 99% of national production from Northern OilBelt (NOB), area ~750 Km², exploited for >45 years.
• Daily production of ~45,000 bl/d and 2,700,000 m³gas/d(~ 60,000 bbloe/d).
• Oils are basically heavy (8-15°API) in NOB. In 2017 a new
discovery was achieved 15 Km East of Havana, with amedium gravity oil production (22.6°API).
4
NORTHERN OIL BELT (NOB, 99% OF TOTAL PRODUCTION)
1. CUBA OIL AND GAS PRODUCTION.
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2. PETROLEUM SYSTEM ELEMENTS.
CUMULATIVE PRODUCTIONS IN NOB:
CANASÍ-PE – 38.2 MMBL
YUMURÍ-SEBORUCO – 116 MMBL
VARADERO – 231 MMBL
BJ-SANTA CRUZ – 56.2 MMBL
Some oil fields parameters:
Porosity: 14-20%Permeabilities: 400 mD - 2 DarciesOil Saturation: 60-80 %
Net / Gross: 70-85%Reservoir Temperatures: 45-65°C
Cumulative production per well: 2-6 MMbl.Recovery factor: 5-7%
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1. UPDATE OF CUBAN OIL AND GASPRODUCTION.
2. PETROLEUM SYSTEMS AND PLAYTYPES.
3. GENERAL CHARACTERISTICS OFBIDDING BLOCKS.
4. RESOURCE AND RISKASSESSMENT.
AGENDA:
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Source
rock level
Stratigraphic interval TOC (%)
Max (Ave)
Organic matter
type
Ju
rass
icC
reta
ceo
us
Lower- Middle 7.86 (2) III1
Aptian
Albian
Cenomanian
Turonian
8.42
(0.5-3)
II, II-III and III4
Kimmeridgian
Tithonian
Berriasian
Valangianian
Hauterivian
Barremian
16.11
3-6
II, IIS, II-III , III
and I
3
Oxfordian 5.60 (1.8) II, II-III and III2
2. PETROLEUM SYSTEM ELEMENTS.
SOURCE ROCKS
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2. PETROLEUM SYSTEM ELEMENTS.
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9
Seismic imaging and trapcharacteristics of NorthernOil Fields.
Petroleum System Elements:
• Source rocks: clayeylimestone and shalefrom Upper Jurassic(Oxfordian-Tithonian).
• Reservoirs: Naturallyfractured and dissolvedcarbonates,Kimmeridgian andTithonian.
• Seal: Tertiary shales,syn-tectonicsedimentation.
J₃-J₃ !
2. PETROLEUM SYSTEM ELEMENTS.
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CATOCHE
SITE 540
SITE 535
SOURCE ROCK POTENTIAL IN THE OFFSHORE
2. PETROLEUM SYSTEM ELEMENTS.
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2. PETROLEUM SYSTEM ELEMENTS.
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CATOCHE (FORELAND)
CSA (YUCATAN)
YA
MA
GU
A-J
AG
UEY
(FLO
RID
A-B
AH
AM
AS
)
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Yamagua 1X,
2515-2638 m
Catoche 1X
Hydrocarbons extractions from cuttings
Albian pelagic
limestone
(4520-4525 m)
Gas zone,
Campanian-
Maestrichtian
chalk
(4365-4375 m)
Lower Eocene
pelagic
calcareous
sandstone
(4175-4185 m)
ASPHALT
OIL STAINS
Site 535,
530-585 m
Catoche
1X
0 100
kilometers
Catoche
Site 535 Yamagua
Tr23
Tm
H29
H30
Biomarker MZ 191 (Hopanes)
Tr23
Tm
H29
H30
Biomarker MZ 191 (Hopanes)
Tr23
Tm
H29
H30
Biomarker MZ 191 (Hopanes)
H29 > H30,
Characteristic
behavior of
Family II of
cuban oils
H29 < H30,
Characteristic
behavior of
Family I of
cuban oils
H29 < H30,
Characteristic
behavior of
Family I of
cuban oils
2. PETROLEUM SYSTEM ELEMENTS.
OIL SHOWS IN CUBAN OFFSHORE WELLS
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Family I of Cuban oils, correlates with Family 4 of Gulf of Mexico
Family II of Cuban oils, correlates with Family 2 of Gulf of Mexico
Family III of Cuban oils, correlates with Family 6 of Gulf of Mexico
2. PETROLEUM SYSTEM ELEMENTS.OIL TYPES AND SOURCE ROCKS IN GoM BASIN
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2. PLAY TYPES FROM NEW SEISMIC DATA.
PLAY TYPE-1: FOLDED BELT DUPLEXES
PLAY TYPE-2: FAULTED BLOCKS (HORST)
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2. PLAY TYPES FROM NEW SEISMIC DATA.
Anticline
E1
E2-Q
Water Depth <2000m
2 km
4 km
Km + Tit + K
P1
P2
P3 + N + Q
Ox
J1-J2
Geometry of duplexes structures in the folded belt, block N36.
Proven petroleum system:Source Rock: shale and clayey lst (J3)Reservoir: Fractured carbonates (J3-K1)Seal: shale (P1-P2)
PLAY TYPE-1: DUPLEXES IN FOLDED BELT
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2. PLAY TYPES FROM NEW SEISMIC DATA.
PLAY TYPE-2: FAULTED BLOCKS (HORST)
Petroleum system:
Source Rock: shale and clayey limestone (J3).
Reservoir: Fractured carbonates (J3, Kimmeridgian).
Seal: shale and clayey limestone (J3, Tithonian).
BLOCK N50
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2. PLAY TYPES FROM NEW SEISMIC DATA.
Petroleum system:
Source Rock: shale (Oxfordian and older).
Reservoir: Porous dolomites and sandtones (J3, Oxfordian).
Seal: Oxfordian shale and Kimmeridgian anhydrite.
PLAY TYPE-3: OXFORDIAN BLOCK-N26
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2. PLAY TYPES FROM NEW SEISMIC DATA.
PLAY TYPE-4: SYN-RIFT SANDSTONE BLOCK-N32
Petroleum system:
Source Rock: shale (Syn-rift, Lower-Middle Jurassic).
Reservoir: Sandtone (Syn-rift, Lower-Middle Jurassic).
Seal: shale (Syn-rift, Lower-Middle Jurassic).
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PLAY TYPE TRAP CHARACTERISTICSREGIONAL
ANALOGUES
DUPLEXES
Thrust sheets associated to Northern
Cuban Folded belt. Reservoir are
fractured and karstified pelagic
carbonates from Upper Jurassic-Lower
Cretaceous. Seal is Paleogene shale.
Varadero
(Cuban Fold Belt)
FAULTED BLOCKS
(HORSTS)
Structural highs, with high energy
carbonates mainly from Kimmeridgian.
Seal are clayey deep water carbonates
and tight limestone.
San Andres?
(Mexico)
OXFORDIAN Stratigraphic, sandstone reservoir
sealed by interbedded shale.Norphlet? (US)
LOWER-MIDDLE JUR.Lower-Middle Jurassic sandstone, seal
of Callovian anhydrite and internal shale.
Pre-salt?
(Mexico)
2. PLAY TYPES FROM NEW SEISMIC DATA.
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2. PLAY TYPES FROM NEW SEISMIC DATA.
PLAY TYPE-3: OXFORDIAN
New play type,hypotethical, based on thelatest discoveries in GoM(Norphlet Play) and somesimilarities with Cubanfacies. Oxfordian iscomposed by shale,sandstone and dolomites.
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1. UPDATE OF CUBAN OIL AND GASPRODUCTION.
2. PETROLEUM SYSTEMS AND PLAYTYPES.
3. GENERAL CHARACTERISTICS OFBIDDING BLOCKS.
4. RESOURCE AND RISKASSESSMENT.
AGENDA:
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FLORIDA-BAHAMAS
PLATFORM
SIGSBEEBASIN
YUCATAN PLATFORM
Cuban oil fields in Fold Belt have and area of ~750 km² (96% in Western offshore is unexplored).
PDVSA, 6 BLOCKS
SONANGOL, 2 BLOCKS
BIDDING, 24 BLOCKS
3.GENERAL CHARACTERISTICS OFBIDDING BLOCKS.
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25
1. Blocks are proposedbased on availabledata, prospectivitycriteria and vecinity toproductive area ofCuban folded belt.
2. Block acreage is 1800-2000 Km². Sea bottomdepth from 500-3000m.
3. For volumetrics and riskassessment,parameters from Cubanoil fields andsurrounding areas ofMexican side wereconsidered.
N44
1.GENERAL CHARACTERISTICS OFBIDDING BLOCKS.
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• High quality data was recently acquired and processed (PSTM& PSDM). The streamer length was 10-12 Kms to illuminatedeep targets.
• PSTM & PSDM data is now available to be negotiated with BGP.
Total work size: ~ 27,000 Km
3.GENERAL CHARACTERISTICS OFBIDDING BLOCKS.