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Prospect Analysis and Hydrocarbon Reservoir Volume Estimation in an Exploration Field, Shallow Offshore Depobelt, Western Niger Delta, Nigeria

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Abstract

The daunting challenge in the exploration and production of oil and gas in the face of continual rise in the world’s energy consumption has long been how to economically recover bypassed reserves within existing assets. This research is focused on the analysis of prospects and volumetric estimation of the hydrocarbon reservoirs delineated within an exploratory field using 3D seismic data and suites of wireline logs. The prospectivity of the delineated reservoir was carried out using seismo-structural interpretation and formation evaluation towards the assessment of the prolific hydrocarbon occurrence within the field. The reservoirs have porosity (0.29–0.32) for H1, (0.20–0.31) for H2 and (0.30–0.40) for H3 and the average computed hydrocarbon saturation of (0.31–0.62) for H1, (0.16–0.52) for H2 and (0.64–0.73) for H3, hydrocarbon pore volume (HCPV) of 28,706.95, 33,081.2 and 45,731.49 barrels for H1, H2 and H3, respectively, while the estimated stock tank oil initially-in-place (STOIIP) range (136.8–140.73) MMSTB for H1, (36.77–489.64) MMSTB for H2 and (166.62–308.14) MMSTB for H3. The observed porosity and hydrocarbon saturation for the delineated reservoirs as well as the estimated hydrocarbon pore volume and storage total oil in place indicate that the reservoirs are highly prolific. The study has therefore contributed to the understanding of hydrocarbon resource potential within the study area.

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Fig. 1

Modified from Damuth (1994)

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Acknowledgments

The authors wish to appreciate the efforts and valuable comments of reviewers and the editor that have improved greatly the quality of this paper. We are grateful to the Schlumberger for providing the required software package and department of petroleum resources (DPR) Nigeria for the provision of data used for this research.

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Authors and Affiliations

  1. Applied Geophysics Unit, College of Science and Technology, Covenant University, Ota, Nigeria

    Kehinde David Oyeyemi & Ahzegbobor Philips Aizebeokhai

  2. Department of Geology, Obafemi Awolowo University, Ile-Ife, Nigeria

    Mary Taiwo Olowokere

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  1. Kehinde David Oyeyemi
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Correspondence to Kehinde David Oyeyemi.

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Oyeyemi, K.D., Olowokere, M.T. & Aizebeokhai, A.P. Prospect Analysis and Hydrocarbon Reservoir Volume Estimation in an Exploration Field, Shallow Offshore Depobelt, Western Niger Delta, Nigeria. Nat Resour Res 28, 173–185 (2019). https://doi.org/10.1007/s11053-018-9377-4

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