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Natural Resources and Conservation Vol. 11(2), pp. 38 - 52
DOI: 10.13189/nrc.2025.110203
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Integration of Seismic Data to Petrophysical Results for the Volumetric Appraisal of BOK Field, Onshore Niger Delta Basin

Okechukwu Frank Adizua ^1,*, Kufre Israel Udo ², Emem John James ^1
1 Geophysics Research Group – GRG, Department of Physics, Faculty of Science, University of Port Harcourt, Nigeria
² Department of Physics, Faculty of Physical Sciences, University of Uyo, Nigeria

ABSTRACT

BOK is a prospect field in the onshore part of the Niger Delta Basin with huge hydrocarbon potential but is yet to be fully economically evaluated by means of volumetric appraisals. This study therefore seeks to economically evaluate the BOK field in terms of its hydrocarbon volumetric potential (reserves) to assess its prospectivity. This work would provide valuable insights to the asset managers of the BOK field to guide their field development plans. Well log data from three wells and 3D seismic data from the BOK field were integrated to perform a thorough volumetric evaluation of the field in order to estimate its volumetric reserves and assess its economic viability. Leveraging on the petrophysical results from a previous investigation in the BOK field, the Petrel program was utilized for the comprehensive volumetric assessment. According to our findings, the BOK field was found to have anticlinal faulted structures that serve as the trapping mechanisms for hydrocarbon reservoirs. According to the structural interpretation, the well data also shows good correlations of the sand bodies throughout the entire seismic section and a correlation of the sand shale inter-beds. Four hydrocarbon-bearing reservoir sand formations were identified by petrophysical investigation. The shale volume ranged from 13.09% to 22.95%, the effective porosity ranged from 19.24% to 24.23%, the net to gross ranged from 38.66% to 75.40%, and the hydrocarbon saturation ranged from 54.85% to 72.53%. Volumetric estimation was carried out on two reservoirs with an estimated HCIP of 92MMbbl and 301MMbbl. By combining the findings from volumetric estimation, well log analysis, structural interpretation, and petrophysical properties, it became clear that both reservoirs had good to very good petrophysical properties. As a result, they were classified as prolific reservoir systems with commercial hydrocarbon fluid saturations based on the estimated hydrocarbon in place (HCIP) which should be used for commercial purposes. The BOK field from our findings has a prolific reservoir system that should be harnessed due to its vast reserves.

KEYWORDS
BOK Field, Integrating Seismic and Well Log Data, Volumetric Appraisal, Prospectivity Assessment, Prolific Reservoir Systems

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Okechukwu Frank Adizua , Kufre Israel Udo , Emem John James , "Integration of Seismic Data to Petrophysical Results for the Volumetric Appraisal of BOK Field, Onshore Niger Delta Basin," Natural Resources and Conservation, Vol. 11, No. 2, pp. 38 - 52, 2025. DOI: 10.13189/nrc.2025.110203.

(b). APA Format:
Okechukwu Frank Adizua , Kufre Israel Udo , Emem John James (2025). Integration of Seismic Data to Petrophysical Results for the Volumetric Appraisal of BOK Field, Onshore Niger Delta Basin. Natural Resources and Conservation, 11(2), 38 - 52. DOI: 10.13189/nrc.2025.110203.