Intergration of Vertical Seismic Profiling in 3-Dimensional Modeling
: A
Co-Dynamic Approach to Better Reservoir Characterization and Imaging in the
Niger Delta
By
Theophilus Ukpohor1
(1) Delta State University, Abraka, Delta State, Nigeria
The growth Fault system that characterised the potential Niger Delta
hydrocarbon reservoirs have defined the archecture of the geological structures
of the Agbada formation that serves as the most valuable hydrocarbon formation
as being complex. With irregular simple roll-over anticlines associated with
fault fronts and diapiric structure of clay-shale compositions confirmed in the
offshore region, only 3-dimensional modeling
has produced a picture of this
complexity.
Conventionally, data for 3-Dimensional modeling
has been from surface seismic
technology, however the integration of data acquired from Vertical Seismic
Profiling have yielded higher resolutions and thus allows for better imaging of
objects within the vicinity of the well bore that could not otherwise be defined
by surface seismic techniques.
Concisely, this paper will focused on the co-dynamic effect of VSP on
3-Dimensional modeling
as it applies to acquiring better reservoir
characterization and imaging in the Niger Delta, giving a general overview of
this technique. The paper will tend to shy away from detailed discussion on VSP
data processing, but highlight the value of the technique as well as the field
procedures involved.