São Tomé & Príncipe São Tomé & Príncipe Exclusive ... - PGS

São Tomé & Príncipe Exclusive Economic Zone São Tomé & Príncipe Exclusive Economic Zone
Play Fairways
Four main play fairways can be proposed in the territorial waters of São Tomé and Príncipe and in the
JDZ:
A New Exploration Frontier
• Distal toe-thrusts of the Niger Delta and more distal lower relief anticlines/swells. This play
fairway, with several recent proven successes at Agbami, Nnwa and Akpo, can be clearly
demonstrated to extend into the JDZ and STP waters. This structural style is illustrated on newly
acquired 3D in the JDZ.
• South of the toe thrust trend, drape anticlines over fracture zones occur. A number of large
fracture zones are observed trending SW - NE, causing structuring of the overlying sediments.
Stratigraphic traps in detached sand bodies are also demonstrated on the 2D seismic, where
channels fed from the Niger delta supply reservoir to the less structured region beyond.
2ºN
OPL 216 OML 127
NNWA OML/OPL
4ºE
OPL
6ºE 8ºE
OML 128 218 219 OML 131
OPL 221 OPL 222 BLOCK C
BLOCK E
OPL 341 OPL 342 OPL 343 OPL 344 OPL 253 OPL 254 OPL 255 OPL 260
OPL 244
OPL 244
AKPO
OPL 245 OPL 247
OPL 245
OPL 246 OML 130
OPL 345 OPL 346
OPL 261 OPL 262 OPL 264 OPL 265
OPL 266 OPL 267
OPL 268 OPL 269 OPL 270 OPL 271 OPL 272 OPL 273
OPL 256
BLOCK 06
OPL 259
BLOCK 09
BLOCK 01
BLOCK
OPL
02
258
OPL OPL 257
SAO TOME JDZ 3D
BLOCK 03 BLOCK 04 BLOCK 05
BLOCK 07
BLOCK 10 BLOCK 11
BLOCK 08
F-08
BLOCK J
Equatorial
Guinea
D-13
D-1
E-11 E-12 E-13 E-14
F-09 F-10 F-11 F-12 F-13 F-1
G-09
G-10 G-11 G-12 G-13 G-
H-10
H-11
H-12 H-13 H-1
I-12
I-13 I-1
N/K
BLOCK M
BLOC
• The 'Cameroon Trend' of volcanic islands consists of a series of Miocene anticlines, with a thick
Late Cretaceous-Miocene sedimentary section developed below outcropping Miocene-Recent
volcanics, including the seeping reservoirs, as shown in the photograph overleaf.
BLOCK K
• The southeastern portion of STP territorial waters covers the outer continental margin of the
Gabon basin. A deepwater extension to the Ogooué Delta petroleum system can be proposed here,
with a major input of reservoirs likely during two Late Cretaceous lowstands. Trap types will include
drape anticlines over fracture zones and stratigraphic plays in detached sand bodies
Sao Tome and Principe
IGOUMOU
AGALI
TOLO
0º
KIARSSEN
São Tomé and Príncipe - extending proven fairways
ANNOBON
IGHENGUE
OTITI
Exploration activity has taken large leaps in recent years into waters previously considered
unacceptably deep for drilling and production. Lessons learnt during Africa's exploration
history indicates that technical risk is significantly lower when exploring for deepwater
extensions of proven petroleum systems than in the exploration of completely unproven systems.
Regional fairway mapping of deepwater West Africa has highgraded the newly defined
exploration waters of São Tomé and Príncipe where extensions to the petroleum systems of Nigeria,
Equatorial Guinea and Gabon occur.
0
50 100
kilometers
LEGEND
PGS 2D 2005 LINES
PGS 2D 2002 LINES
PGS MC3D SURVEYS
JOINT DEVELOPMENT ZONE
LICENSED ACREAGE
Gabon
2D Seismic – PGS has acquired and processed a 11,000
line km programme of high quality 2D data in the São
Tomé & Príncipe Exclusive Economic Zone (EEZ).
CM 2000
DM 2000
AKORI
AZOB
PINGOUIN
CLAIRE
ROUSSETTE
ANGUILLE PORT G
OCTOPUS
MEROU
PAGEAU
LIMA
GIRELLE TORPILLE EBEN
PELICAN EA
OBANDO TUR
BAUDR
MOABI
N'TCH
AYOL
GRON
BARB
ABLE
PGS Geophysical UK
Charles Day
Tel: (44) 1932 260001
charles.day@pgs.com
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Exclusive Economic Zone
Overview
PGS has entered into an
exclusive agreement with the
Government of São Tomé and
Príncipe ("STP”) to assist in the
promotion of the offshore
acreage. PGS will also assist
the STP Government with
marketing the exploration
opportunities and prospectivity
of the São Tomé and Príncipe
offshore to the international oil
industry. To this end, PGS has
acquired high quality 2D and 3D
seismic data which is now
available for licensing.
Ubabudo 1 Well Section (drilled onshore São Tomé)
Geological Setting
São Tomé and Príncipe are
volcanic islands lying in the
Atlantic Ocean approx. 200 km
south of the Nigerian coast.
Their territorial waters are large,
encompassing fairly deep
waters but with a sediment
cover that is unusually thick for
such oceanic regions. This thick
sediment cover represents the
distal prodeltaic sediments of
the Cretaceous Ogooué Delta of
Gabon and the Niger Delta, the
main sediment outlet during the
Tertiary.
Regional Tectonic Elements
Oil Seep at Ubabudo 1 well location (onshore São Tomé)
2D Seismic shows thick sedimentary section and structuring
associated with the Fernando Po Fracture Zone
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