recently digitally reconstructed seismic data available ... · time variant scaling migration group...
TRANSCRIPT
MDOIL
Recently digitally reconstructed seismic data available for license from the
Petroleum Corporation of Jamaica for the Morant, Formigas and Albatross regions, offshore eastern Jamaica.
Data for 2nd official round
Jamaica - the offshore banks digitised seismic
The Petroleum Corporation of Jamaica (PCJ) has recently made available for license 1,044 line km of digitally reconstructed data for Morant, Formigas and Albatross areas of Eastern Jamaica. The data was acquired in 1983 by Sefel as part of a Canada International assistance project and is the only seismic data available for this region.
The data is available by licence, through PCJ’s UK Agent (MDOIL Limited [email protected]) for a fee of US$7,500 for a single user with a 50% discount for partners.
The data, to include the georeferenced shotpoint map and corrected navigation is available on a CD or can be downloaded from MDOIL's ftp site on payment of the license fee.
Newly digitally reconstructed seismic data
Offshore seismic metadata: the 1983 Sefel/PCIA surveys (Walton Basin, Morant Basin and Formigas Bank). Ref JEBCO alliance report 2004
OFFSHORESEISMIC
METADATA
JAMAICA
ACQUISITION
PROCESSING
DISPLAY
Walton Basin -Morant Basin - Formigas Bank
Survey Number: 8351
Auxiliary data: Magnetics, gravity, bathymetry
Total kilometres: 2940
Processing: PetroCanada Exploration Inc.Acquisition: Sefel
Source: Tuned air gun array, 3220 cu. in., 2000 p.s.i.
T.V.A: Exponential gain and spherical divergence correction
Demultiplex and resample: to 4 msec
Polarity: Negative numbers (compressions) displayed as peaks (black)
Instrument: Litton 888 Format: Unknown
DBS: Prediction offset 32 msec
Horizontal scale: 20 trace/cm (1:50,000)
Streamer length: 3000 m
Vertical scale: 1 sec = 5 cm
Number of hydrophone groups: 60
Pop interval: 25 m
Velocity analysis Trace mute and zero
Sampling: 2 msec
Anti-alias and low cut filter: High cut 125 Hz Low cut: 6 Hz
Polarity: Compression recorded as a negative number
DAS: Prediction offset 16 msec
Time Variant Scaling
Migration
Group interval: 50 m
Coverage: 60 fold
NMO: 60 fold stack
Record Length: 6 secs
Year: 1983
Morant, Formigas and Albatross regions, offshore eastern Jamaica.
1044 in Morant Fori gas area
SEISMIC PRODUCTION LOG
DO
CU
ME
NT
ID
LIN
EN
AM
E
ST
AC
K/
MIG
RA
TIO
N
RE
CO
NS
TR
UC
TE
D
DIR
EC
TIO
N
ST
AR
TT
IME
EN
DT
IME
DA
TA
LE
NG
TH
TR
AC
ES
/SP
LE
FT
SH
OT
PO
INT
RIG
HT
SH
OT
PO
INT
SP
Inte
rval
Kilo
mete
rs
TR
AC
EC
OU
NT
1 9000 M R - L 0 6 6000 1 1793 -68 25 46.525 1862
2 9001 M L - R 0 6 6000 1 -67 1243 25 32.75 1311
3 9002 M L - R 0 6 6000 1 -66 1403 25 36.725 1470
4 9002A M L - R 0 6 6000 1 2276 3052 25 19.4 777
5 9002B M R - L 0 6 6000 1 4636 3934 25 17.55 703
6 9003_9003A M R - L 0 6 6000 1 1918 -67 25 24.625 986
7 9004 M R - L 0 6 6000 1 2519 -66 25 64.625 2586
8 9005 M L - R 0 6 6000 1 -67 1149 25 30.4 1217
9 9006 M L - R 0 6 6000 1 -67 2012 25 51.975 2080
10 9006A M L - R 0 6 6000 1 2953 3919 25 24.15 967
11 9007 M R - L 0 6 6000 1 520 -67 25 14.675 588
12 9008 M R - L 0 6 6000 1 1338 -66 25 35.1 1405
13 9009 M R - L 0 6 6000 1 1948 -67 25 50.375 2016
14 9010 M L - R 0 6 6000 1 -66 1333 25 34.975 1400
15 9011 M L - R 0 6 6000 1 -65 4218 25 107.08 4284
16 9012 M R - L 0 6 6000 1 752 -67 25 20.475 820
17 9012A M R - L 0 6 6000 1 2292 1636 25 16.4 657
18 9012B M R - L 0 6 6000 1 4314 3173 25 28.525 1142
19 9013 M R - L 0 6 6000 1 352 13 25 8.475 340
20 9013A M R - L 0 6 6000 1 3184 1234 25 48.75 1951
21 9014 M L - R 0 6 6000 1 193 2511 25 57.95 2319
22 9015 M L - R 0 6 6000 1 -67 768 25 20.875 836
23 9015A M L - R 0 6 6000 1 1643 3392 25 43.725 1750
24 9016 M L - R 0 6 6000 1 -67 1595 25 41.55 1663
25 9017 M R - L 0 6 6000 1 1857 -66 25 48.075 1924
26 9018 M R - L 0 6 6000 1 3467 -66 25 88.325 3534
27 9019 M L - R 0 6 6000 1 -67 814 25 22.025 882
28 9021 M L - R 0 6 6000 1 -67 1205 25
29 9021_9021A M L - R 0 6 6000 1 -67 2467 25 38.325 1534
30 9021A M L - R 0 6 6000 1 1970 2465 25
Totals 1074.4 43004
Available Seismic
The island of Jamaica and multiple shallow banks are separated by NW-SE to EW trending deeps. Water depths are generally less than 1,500 metres with the 100 metre isobath outlining the carbonate banks and their upper slopes. Of the detached banks, Morant Key is about 230 km2
2)(89 miles in area (Meyerhoff and Krieg, 1977).
The images below show a collage of images from NASA shuttle photographs, illustrating the form of the present day banks. Most notable are the white coloured strips developed along the margins of the banks that face the prevailing waves and winds. These are coral reefs and their erosion products.
Lower Nicaragua Rise.
Water depths of 1,500 to 3,000 metres dominate this region. In the far north east (Morant Keys area), water depths are less than 500 metres.
Formigas Bank
This sector is associated with the passive margin at the eastern end of the Cayman Trough and is dominated by sets of NNE-SSW elongated tilted fault blocks created in the early stages of trough development. These are expressed in the bathymetry and continue in ever deepening water into the Cayman sector. Much of the early subsurface information comes from
single channel seismic surveys with low penetration, and it is entirely possible that older, but still prospective, sediments exist at depth. The digitization of Sefel/PCIA lines in this area has helped with the visualization of the deeper structure however, eventually new data will be required within the areas of interest to determine the character of these older depocentres if present.
Geological background, Upper Nicaragua Rise
.
NASA shuttle images of Upper Nicaragua Rise carbonate banks. Images courtesy of Earth Sciences andImage Analysis Laboratory, NASA Johnson Space Center. Ref JEBCO 2004 Report.
Held blocks are shaded
Patch reefs (Formigas Bank, Sefel/PCIA line 9016, ca. SP 1200).
Morant &formigasareas
Morant Basin
The gravity and magnetic data of this area off the eastern end of Jamaica imply a heavily faulted and possibly intruded region with magmatic activity. This is confirmed by the Sefel/PCIA seismic, which shows that early Tertiary rifting was followed by strong inversion, new rifting and in some cases by recently renewed inversion. Significant section is present. The tectonic complexity is related to the eastern prolongation of the onshore Plantain Garden Fault (the Enriquillo Fault of Haiti). This line of active tectonism is illustrated by Leroy et al. (1996). East-west Sefel/PCIA offshore lines south of the Blue Mountains suggest that the core of these mountains consists of a thrust stack dipping to either the south or, more probably, the north. A detailed study of these lines should also allow an excellent tie to the young tectonics onshore.
Morant South
This sector is defined largely on the basis of Bouguer gravity, which indicates an area of relatively thick crust lying to the south-east of the escarpment that bounds the Pedro Bank. The play potential in the north-west, along the escarpment trend is identical to that in the Jamaica Plain sector.
The general stratigraphy of Jamaica comprises a thick Tertiary sequence divided in two. The uppermost section is dominated by carbonates. The lower section (synrift section) is also mainly carbonate, but becomes more clastic at depth and laterally in places. The Tertiary unconformably overlies a thick Cretaceous shale/ siltstone section
Exploration sectors superimposed on free- 1 = Formigas Bank 2 = Naivassa 3 = Morant Basin 4 = Morant South
air gravity.
Some exploration sectors, ref JEBCO report 2004
Ref Finder Petroleum Houston 2007
Recent petroleum geochemical analysis has indicated the presence of both terrestrially and marine derived oils. The origin of the thermogenic gases remains
uncertain.
The marine oils are interpreted to be derived from a marl dominated source rock and both an Upper Cretaceous and Late Jurassic Marine sources could be responsible for the seeps and shows found throughout Jamaica (on and offshore)
The oil shows in the Eccleston core hole, eastern Jamaica and gas at Yallahs Point have yet to be analysed.
There are also minor gas anomalies offshore (Inter Ocean sniffer survey image) and SAR indications of hydrocarbons from the recent work by Finder.
The thermogenic gas
The three oil families
Oleanane/hopane Versus %C29 steranes
Jamaican Marine Vs Terestrially derived oils
Petroleum Prospectivity - recent petroleum geochemical analysis
Maracaibo BachaqueroAntigua #1Antigua #2
Saba Bank #1
Saba Bank #4
Saba Bank #3Saba Bank #2
Oleanane/Hopane
0
10
20
30
40
50
60
70
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
C29%
Tertiary sourced oils
Pre-
Windsor area
Retrieve-1
Content-1
Tertiary sourced oils
29 -28 -27 -26 -25 -24 -23
-30
-29
22
-21
-20
Terrigenous
29 -28 -27 -26 -25 -24 -23
-30
-29
22
-21
-20
Terrigenous
29 -28 -27 -26 -25 -24 -23
-30
-29
22
-21
-20
Terrigenous
Sources
Eocene
Maastrichtian
Smackover
-26
-25
-24
-23
-
Windsor-1, cuttings, 27-
1 cuttings,247-248m
Windsor-1 CH cuttings
1 oil, 1509 m
-26
-25
-24
-23
-
Windsor-1, cuttings, 27-
1 cuttings,247-248m
Windsor-1 CH cuttings
1 oil, 1509 m
-26
-25
-24
-23
-
Windsor-1, cuttings, 27-
1 cuttings,247-248m
Windsor-1 CH cuttings
1 oil, 1509 m
Windsor-
Windsor-
Windsor-
Windsor-
Windsor-
Windsor-
Windsor
Content-1,1435m
Content-1, 1603m
Content-1,1435m
Content-1, 1603m
Windsor-1 oil, 1692 m
Content-1,1435m
Content-1, 1603m
-28
-27
-28
-27
-28
-27Retrieve-1Retrieve-1Retrieve-1
Marine
Saba #1 6990 ftMaracaibo Bachaquero
Antigua Ab10
Antigua AB 9 Saba #1 9300 ft
Saba #2 3,742 ft
Saba #2 3,920 ft
Petroleum Geochemistry
Caribbean Oil Families
Rich Eocenesource rocks
-31 -30 -
I
II
III
50 100 150 200
1000
900
800
700
600
500
400
300
200
100
0
Oxygen Index
Hydrogen Index
Content - 1 Van Krevelen plot for the Chapelton Formation.
Prepared from Rodrigues indicating the presence of rich Eocene source rocks
Ref: Finder Petroleum, Houston 2007
The Data and Opportunities
The data
The Petroleum Corporation of Jamaica (PCJ) can make available though its marketing agent the following data:
Reconstructed Data (described in this booklet)
1044 line km of reconstructed 1983 Vintage seismic for Morant and Formigas areas.
Report entitled:
The Realisation of the Hydrocarbon potential of Jamaica Phase I: Setting the scene Volume I and Volume II.
(NB required data to bid on blocks). Paper and CD copy available.
Digital data, seismic and wells
Scanned Jamaica seismic (Prakla Seismos, GSI, CGG (Union Texas) and Sefel (PCJ) data (8,141.22km) well data (LAS files) and scanned reports. (NB required data to bid on blocks). CD or DVD copy available.
Digitally reconstructed Jamaican seismic data from GA78, JA62, UJT and PCIA surveys. DVD copy available.
Reprocessed Jamaican seismic data. Shot records, geometry and PSTM gathers with radon transform for: G78-024, G78-04, G78-105, G78-109, G78-20, GA-203, G78-27, JA82-12, JA82-9, PCIA-9024, PCIA-9025, PCIA-9026, PCIA-9032, PCIA-9053 & UTJ80-12 (1,026km) and Radon migration and Radon stacks for G78-024, G78-04, G78-105, G78-109. G78-20, GA-203, G78-27, JA82-12, JA82-9, PCIA-9024, PCIA-9025, PCIA-9026, PCIA-9032, PCIA-9053.DLT copy available Radon stacks on 2 Cds.
The opportunities
Jamaica is offering 4 large onshore blocks and 12 large offshore blocks in shallow to moderately deep water. Earlier work by the JEBCO Alliance identified two or possibly three Petroleum Systems. Some 53 leads have been identified and there is considerable scope for more in the relatively unexplored areas outside of the Walton basin. The Walton Basin, Blossom Basin, Pedro Bank and the North Coast were rated as having high prospectivity and the Jamaica plain, Alice Shoal and Birthday areas were rated as having moderate prospectivity (Ref JEBCO report 2004) clearly the Cayman Trough should be thought of as unprospective at present.
Key Concession Terms
·
·exploration period.
·Twenty (20) year production period.
·Optional ten (10) year extension of production period.
·
·33 1/3% maximum income tax rate and/or possible tax exemption for a number of years.
·No restrictions on production exports or repatriation of capital.
·Ability to recoup production costs, make return on investment, defray tax and royalty obligations, before sharing profit with government.
·2.5% profit to be re-invested in local community and environmental projects.
·An annual sum (to be negotiated) to be spent on training of Jamaican personnel.
·Allowing sale, farm-out or joint venture opportunities to companies
·
·
Attractive Factors
·Low Entry Cost
·Large possible reserves for oil and/or gas.
·A large and open space concession area onshore and offshore.
·Well locations in shallow to moderate water depths.
·Production possibilities in shallow water.
·Relinquishment option at the end of each concession period.
·Proximity to Gulf of Mexico and other US markets.
·Excellent terms and conditions.
·Malampaya look-alike features
Data packs available at year end, seismic, well data, geological reports offshore US$ 55,000, onshore US$ POA.
Royalty, if required, is to be negotiated.
Natural gas, through LNG and CNG, will become an important part of the Jamaican energy mix for the electricity sector. Infrastructure will be created for the distribution of imported natural gas. Consequently, local finds of natural gas would be readily marketable
Excess gas will be monetised by creating methanol, fertilizer, urea, CNG, GTL, LNG or GHN.
Five (5) year primary
Petroleum Corporation of Jamaica36 Trafalgar Rd,Box 579Kingston 10Jamaica, W.I.t. +1 876-929-5380/9f. +1 [email protected]
MDOIL Limited68 Glade Road,Marlow, Bucks,SL7 1DH,EnglandTel +44 (0) 7908 208345www.mdoil.co.uke.mail [email protected]
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