Geological Modeling of Dahomey and Liberian Basins

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Title: Geological Modeling of Dahomey and Liberian Basins
Author: Gbadamosi, Hakeem B.
Abstract: The objective of this thesis is to study two Basins of the Gulf of Guinea (GoG ) , namely the Dahomey and the Liberian Basins . These Basins are located in the northern part of the GoG , where oil and gas exploration has significantly increased in the last 10 years or so . We proposed geological descriptions of these two Basins . The key characteristics of the two models are the presence of channels and pinch -outs for depths of between 1 km and 2 km (these values are rescaled for our numerical purposes to 600 - m and 700 -m depths ) and normal faults below 3 km (for our numerical purposes we use 1 km instead of 3 km ) . We showed that these models are consistent with the plate tectonics of the region , and the types of rocks and ages of rocks in these areas . Furthermore , we numerically generated seismic data for these two models and depth -migrated them . We then interpreted the migrated images under the assumption that the geologies are unknown . The conclusions of our interpretations are that we can see clearly the fault systems in both models . However , our results suggest that seismic interpretations of the channels and pinch -outs associated with the geology of the Dahomey and Liberian Basins will generally be difficult to identify . In these particular cases , we missed a number of channels and pinch -outs in our interpretations . The limited resolution of seismic images is the key reason for this misinterpretation .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -05 -264
Date: 2010-01-16

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Geological Modeling of Dahomey and Liberian Basins. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -05 -264 .

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