Geological and Petrophysical Evaluation of Well and Reservoir Development: Case Study of a Niger Delta Oil Reservoir
Abstract
The development strategies and success in the production of a reservoir is a function of the reservoir size, complexity, structure, type and quantity of fluid of the reservoir. An accurate and precise prediction of reservoir rock and fluid properties is fundamental to the prediction of reservoir performance. Improved results are obtained when all of the available data are integrated. This study seeks to integrate geological and petrophysical input to characterize and model a reservoir in the Niger Delta oil province; characterize the reservoir features, estimate hydrocarbon volume and proffer efficient development strategies for the reservoir to optimize hydrocarbon recovery from the reservoir. To achieve these, a detailed facies analysis using log motif to characterize the reservoir was carried out. This was integrated with petrophysical properties to build a 3D model of the reservoir. High, low and base cases of hydrocarbon in-place volume as well as recoverable volume estimated with varying petrophysical property and structural uncertainty range from depth conversion residual. An oil-in-place volume of 99 MMbls with 25 MMbls recoverable and gas in-place volume of 200 BSCF with a recoverable of 51 BSCF was estimated as the base case. Two horizontal wells were proposed for the reservoir development plan.
How to cite this article: Akhajeme E, Onwukwe SI, Ebeniro JO et al. Geological and Petrophysical Evaluation of Well and Reservoir Development: Case Study of a Niger Delta Oil Reservoir. J Adv Res Petrol Tech Mgmt 2020; 6(1&2): 7-14.
References
2. Nevans JW, Peter GK, Rohit S et al. An integrated geologic and engineering reservoir characterization of the North reservoir characterization of the North Robertson (Clear Fork) unit, Gaines County, Texas, 1999, in R. Schatzinger and J. Jordan, eds., Reservoir Characterization-Recent Advances, AAPG Memoir 1999; 71: 109-124.
3. Yesquen S, Carro JL, Lopez L. Integrated Reservoir Management for Life Extension of Mature and Marginal Oilfeild-Talara Basin, Peru,” Paper No. SPE 97637, SPE Latin American and Caribbean Petroleum Engineering Conferences, Rio de Janeiro, 2005.
4. Urbaneja JC. Characterisation of the Womack Hill Field’’: AAPG Bulletin, 2002.
5. Woodling GS, Kaldi JG, Roe RC et al. Multidisciplinary Reservoir Study of the Bima Field offshore N.W. Java, Indonesia. The First Archie Conference, The Integration of Geology, Geophysics, Petrophysics and Petroleum Engineering in Reservoir Delineation, Description and Management, Houston, Proceedings AAPG Oklahoma, 1990; 1-36.
6. Zee MY, Gomez E, Luneau B et al. Integrated reservoir modeling of a Pinedale tight-gas reservoir in the Greater Green River Basin, Wyoming, in Y. Z. Ma and P. R. La Pointe, eds., Uncertainty analysis and reservoir modeling: AAPG Memoir 2006; 96; 89-106.
7. Knox GJ, Omatsola EM. Development of the Cenozoic Niger Delta in Terms of the “Escalator regression” Model and Impact on Hydrocarbon Distribution”. KNGMG Symposium, Coastal Lowlands, Geology, and Geotechnology. Dordrecht, Proceedings Kluwer. 1989; 181-202
8. Tuttle M, Charpentier R, Brownfield M. The Niger Delta Petroleum System: Niger Delta Province, Nigeria, Cameroon, and Equatorial Guinea, Africa”. United States Geologic Survey. United States Geologic Survey. Retrieved 6 March 2015.
9. Amaefule JO, Njoku RFA, Egbogah EO et al. Mature Niger Delta Reservoirs: Integration of Core and Log Data for flow unit zonation and Permeability Prediction. SPENC 97. Port Harcourt: Society of Petroleum Engineers 1997.