Asian Journal of Geological Research

Formation Evaluation of Wells 1 & 2 in “H” Field, in the Niger Delta Region, Nigeria

Alegimenlen Husain Obianjulu *

Department of Physics/Geophysics, Ambrose Alli University, Ekpoma, Nigeria.

Aigbedion Isaac

Department of Physics/Geophysics, Ambrose Alli University, Ekpoma, Nigeria.

Ojese John Otuokpaikhian

Department of Physics/Geophysics, Ambrose Alli University, Ekpoma, Nigeria.

Mohammed Mojeed Ayomide

Department of Geology and Mineral Science, University of Ilorin, Nigeria.

Gbelekale Oluwadamilare Temitope

Department of Chemistry, Lagos State University, Nigeria.

*Author to whom correspondence should be addressed.

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Abstract

Based on data from two wells in the "H" field (Niger Delta Region), a formation evaluation was performed to locate hydrocarbon-yielding reservoirs and examine reservoir characteristics. Techlog software was used to analyze the geophysical logs, i.e., Gamma Ray log, Resistivity log, Spontaneous Potential log, Neutron log, and Density log. Within the interval logged, the lithology of sandstone and shale could be delineated, which is a characteristic of the Agbada Formation. The petrophysical characteristics of the reservoirs are good especially at the areas of interest (hydrocarbon zones). The reservoirs within the field were shown to be very productive based on their porosity, permeability, shale volume, and hydrocarbon pore volume values. However, the consistency of the findings was examined using geological data and a mud logger. This study has demonstrated that formation evaluation plays a vital role in reservoir characterization.

Keywords: Formation evaluation, techlog software, geophysical logs, hydrocarbon saturation

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References

Tuttle Michele, Charpentier Ronald, Brownfield Michael. "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.

Fatoke, Oluwaseyi Adedamola. Sequence stratigraphy of the pliocene-pleistocene strata and shelf-margin deltas of the Eastern Niger Delta, Nigeria (Ph.D.). University of Houston; 2010.

Short KC, Staeuble AJ. "Outline of geology of Niger Delta". AAPG Bulletin. 51(5):761-799.

DOI:10.1306/5d25c0cf-16c1-11d7-8645000102c1865d

Archie GE. Introduction to petrophysics of reservoir rocks. Bulletin of AAPG, Tulsa. 1950;34(5):943-961.

Lucia FG. Petrophysical parameters estimated from virtual description of carbonate rocks. Journal of Petroleum Technology, Canada. 1983;32:49-53.

Schlumberger. Well evaluation conference, Lagos-Nigeria. 1985;3:4-7.

Evamy DD, Hammering P, Kmoap WA, Rowlands PH. Hydrocarbon habitat of the tertiary Niger Delta. American Association of Petroleum, Geologist Bulletin. 1978;62(2):1-10.

Aigbedion IA, Iyayi SE. Formation evaluation of Oshioka field using geophysical well logs Middle-east. Journal of Science Research. 2007;2:107-110

Otobo E. Hydrocarbon distribution system pattern and deed prospect in the Niger Delta-Nigeria, NAPE Bulletin. 2005;1:55-62.

Short KC, Stauble AJ. Outline of the geology of Niger Delta. American Association of Petroleum, Geologist Bulletin. 1967:761-777.

Aigbedion I. Reservoir fluid differentiation case study from the Oredo field. International Journal of Physical Sciences. 2007;2(6):144-148.

Maron P. Stratigraphical aspect of the Niger Delta. Journal of Mining and Geology. 1969;4:1-3.