@article{Adeleye_Yekeen_Amidu_2020, title={Seismic stratigraphic analysis for hydrocarbon exploration in the Beta Field, Coastal Swamp Depobelt, Niger Delta}, volume={46}, url={https://journals.agh.edu.pl/geol/article/view/3674}, DOI={10.7494/geol.2020.46.4.259}, abstractNote={<p><span style="left: 210.032px; top: 591.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(0.967307);">Hydrocarbon exploration analysis from a seismic stratigraphic approach was carried out within the </span><span style="left: 141.716px; top: 611.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.01879);">Beta Field, Coastal Swamp Depobelt, Niger Delta, to identify system tracts and sequence boundaries that could </span><span style="left: 141.716px; top: 631.301px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.01969);">be associated with potential hydrocarbon accumulation. 3D seismic volume and data from four wells were ana</span><span style="left: 141.716px; top: 650.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.03023);">lyzed. Depositional sequences, system tracts, sequence boundaries, and candidate maximum flooding surfaces </span><span style="left: 141.716px; top: 670.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(0.953206);">were picked from logs, while reflection patterns and terminations were interpreted from seismic sections. Log </span><span style="left: 141.716px; top: 690.301px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.00091);">shapes from gamma rays in combination with seismic facies analysis were interpreted in order to delineate lithology</span><span style="left: 141.716px; top: 709.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.02568);">, depositional environments and depositional sequences. Seismic attributes were extracted and were draped </span><span style="left: 141.716px; top: 729.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.02494);">on gridded surfaces from the interpreted seismic horizons. These were integrated with structure maps to obtain </span><span style="left: 141.716px; top: 749.301px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.02094);">structural and stratigraphic trends, and the possible presence of reservoir sand. </span><span style="left: 141.716px; top: 768.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.01196);">Five depositional sequences and nine seismic facies were identified within the field. The depositional sequences </span><span style="left: 141.716px; top: 788.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.01615);">were designated Sequences S1 to S5 based on the depth of the occurrences and stacking patterns. This study reveals</span><span style="left: 141.716px; top: 808.301px; font-size: 16.6667px; font-family: serif; transform: scaleX(0.992531);"> a progression from fluvial depositional settings to the shelf. The main reservoirs identified are the sand units </span><span style="left: 141.716px; top: 827.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.02648);">of the highstand and lowstand within three depositional sequences (S1, S4 and S5) although interbedded sands </span><span style="left: 141.716px; top: 847.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(0.991341);">within the TST of S4 and S5 are also suspected of being potential reservoirs. The channel sand deposits within the </span><span style="left: 141.716px; top: 867.301px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.03321);">study area are suspected to be hydrocarbon bearing as they occurred within the complex fault trapping system </span><span style="left: 141.716px; top: 886.968px; font-size: 16.6667px; font-family: serif; transform: scaleX(0.992827);">popular in the Niger Delta. The application of seismic stratigraphy, as shown in this study, serves to encourage exploration</span><span style="left: 141.716px; top: 906.635px; font-size: 16.6667px; font-family: serif; transform: scaleX(1.0024);"> in the Niger Delta where it could be effectively employed for reducing risk in hydrocarbon exploration.</span></p>}, number={4}, journal={Geology, Geophysics and Environment}, author={Adeleye, Mutiu Adesina and Yekeen, Kazeem Oladayo and Amidu, Sikiru Adetona}, year={2020}, month={Dec.}, pages={259–271} }