Max D. Gray1,
Jason M. Francis2,
Rene O. Thomsen1,
Tom Ziegler3
(1) Texas A&M University, College Station, TX
(2) Texas A&M University
(3) Petroleum Geo-Services, Inc, London, England
Abstract: Seismic interpretation and 3D modeling, Offshore Togo, Africa
The recent acquisition of
3100km2 of 3D seismic data by PGS Exploration in Offshore Togo, Africa, makes
possible interpretation and subsequent 3D basin modeling for the evaluation of
hydrocarbon
potential.
Offshore Togo is part of the Dahomey Embayment, with the associated basins a result of the continental rifting of the South American and African plates. The structural history of the Dahomey Embayment is quite complex and reflects this initial rifting as well as subsequent subsidence events. Fracture zones in the area, with related stress-strain characteristics, have formed many elaborate and exciting structures in this area. The resulting stratigraphic units are stacked, folded and separated by unconformities.
The results of a quick-look
seismic interpretation by PGS, suggest numerous direct
hydrocarbon
indicators
such as flat-spots and/or bright spots associated with structures in this
region. The work presented here includes the development of play concepts from
tectono-stratigraphic relationships within a sequence stratigraphic framework
and a detailed evaluation of
hydrocarbon
indicators
using AVO, bright spot and
flat-spot analysis.
The 3D, basin scale, fluid flow
modeling will include hydrocarbon
generation, migration, and accumulation, with
a focus on establishing a ranking of both potential play and field areas for
exploration.
AAPG Search and Discovery Article #90914©2000 AAPG Annual Convention, New Orleans, Louisiana