Evaluation of Petroleum Source Rock Using Well Logs in the Niger Delta Region of Nigeria

Authors

  • WALIEZI, CHIGBO A University of Port-Harcourt, Nigeria
  • OKPOR VICTOR I University of Port-Harcourt, Nigeria
  • G. J UDOM University of Port-Harcourt, Nigeria
  • DOUGLAS ADAORA B University of Port-Harcourt, Nigeria

DOI:

https://doi.org/10.31695/IJASRE.2022.8.5.7

Keywords:

Petroleum source rock, Niger Delta, Well logs, Source Evaluation, Niger delta source rock, Agbada Formation, Akata Formation, Log Interpretation

Abstract

Petroleum source rock potential evaluation was carried out on eight wells of the Niger Delta’s Agbada Formation by assessing some source parameters from well logs and through well logs analysis based on organic matter effect and relationship on and with well logs. Source rock determinant parameters such as volume of shale (Vsh), total organic content (TOC), and amount of generated hydrocarbon (S2) was derived from well logs following established organic matter effects on well logs using Schlumberger's Techlog 2015 software, while hydrogen index (HI) was calculated using known values of TOC and S2 respectively. Well log data used for the analysis includes GR log, resistivity, sonic and Density logs. Apart from deriving source rock parameters, the well logs were also used to identify, quantify and somewhat determine mature zones of source rock intervals by correlation with TOC, S2, and HI source parameters respectively, Therefore, a source interval criterion composing of high GR log, high resistivity, high sonic and low-Density was developed alongside source rock parameters. Results of the analysis in the area show poor to fair source rock quality rating in terms of TOC, and insufficient source rock thickness fit for sustaining a world-class petroleum province like the ND petroleum province and further depicting that the Agbada FM may not be the principal source rock of the area. It is, therefore, recommended that more elaborate studies covering greater depths of the Agbada FM be carried out in other to properly represent the true source quality of the area.

References

Abiola, O., Abe, S. J., and Balogun, O., (2019). Estimation of source rock organic richness from wireline logs over “Charis” Field, onshore Niger Delta, Nigeria. Centre for research and development. 10(1), 77 – 85.

Abrakasa, S., Ukaegbu, V., Onojake, M., (2015). The source kitchen of Niger Delta oils: case study of Nembe Creek E1.0 and the Kolo Creek E2.0 reservoirs. Journal of Petroleum exploration and production technology. 6(3), pp 331 – 341.

Akande, O. S., Ojo, O. J., Adekeye, O. S., Egbenhoff, S. O., Obaje, N. J., and Erdtmann, B. D., (2011): Stratigraphic Evolution and petroleum potential of middle cretaceous sediments in the lower middle Benue Trough, Nigeria: Insight from New Source Rock Facie Evolution. Petroleum Technology Development Journal, (1.1) ISSN: 1595 – 9104.

Bustin, R. M., (1998). Sedimentology and characteristics of dispersed organic matter in Tertiary Niger Delta, Origin of Source Rocks in Deltaic Environment. AAPG Bulletin. 72(3), 227 – 298.

Carol, L. W., (1999). Treatise of petroleum geology/ Handbook of petroleum geology, Exploration of oil and gas traps. 6, 6 – 41.

Dymann, T. S., Palacos, J. G., Perry, W. J., Pawlewicz, M. J., (1996). Source Rock Potential of Middle Cretaceous Rocks in South Western Montana. AAPG Bulletin. 80, 1977 – 1184.

Ejedawe, J. E., Coker, S. J. L., Lambert-Aikhionbare, D. O., Alofe, K. B., and Adoh, F. O., (1984). Evolution of oil generative window and oil and gas occurrence in the Tertiary Niger Delta Basin. AAPG. 68, 1744 – 1751.

Ekweozor, C. M., and Okoye, N. V., (1980). Petroleum Source Bed Evaluation of Tertiary Niger Delta. AAPG. 64, 1251 – 1259.

Evamy, B. D., Haremboure, J., Kamerling, p., Knap, W. A., Molloy, F. A., and Rowlamds, P. B., (1978). Hydrocarbon Habitat of Tertiary Niger Delta. AAPG Bulletin. 62, 277 – 298.

Falebita, D. E., Ayeni, O. Z., Bayowa, O. G., Anukwu, G. C., (2015). A study of the organic richness and petrophysical of selected shales from the analysis of wireline logs: a case study of Neya field, Niger Delta. Ife Journal of Science. 17, 1.

Filippo, P., Ian, G., Main, Giammaria, Z., (1999). The thermal evolution of sedimentary basins and its effects on the maturation of hydrocarbons. Geophysical Journal International. 139, (1): 248 – 260.

Heidarrifard, M., (2011). TOC prediction from well logs using Δlog R method and neural network technique in the northern Dezful Embayment. Zagros, Iran, The 2nd South Asian Geoscience

Katz, B. J., (2006). Significance of ODP results on Deep Water Hydrocarbon Exploration- Eastern Equatorial Atlantic Region. Journ. African Earth Sciences. 46, 331 – 345.

Lambert-Aikhionbare, D. O. and Ibe, A. C., (1984). Petroleum Source Bed evaluation of the Tertiary Niger Delta: Discussion. AAPG Bulletin. 68, 387 – 394.

Levethal, J. S., (1981). Pyrolysis Gas Chromatography-Mass Spectrometry to characterize organic matter and its relationship to Uranium Content of Appalachian Devonian Black Shales, Geochem. And Cosmochem. 45, 883 – 889.

McKelvey, V. E., and Nelson, J. M., (1945). Characteristics of marine uranium bearing sedimentary rocks. Econ, Geol. 35 – 53.

Mendelson, J. D., (1985). Petroleum source rock logging, Earth laboratory, Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology Cambridge. MA 02139.

Meyer, B.L and Nederlof, M. H., (1984). Identification of Source rocks on wireline logs by Density/Resistivity and Sonic Transit Time/Resistivity Cross plots. AAPG Bulletin. 168, 121 – 129.

Michele, L. W., Tuttle, I., Ronald, R., Charpentier, I., and Michael, E., (1999). The Niger Delta Petroleum System: Niger Delta province, Nigeria, Cameroon, and Equatorial Guinea, Africa. United States Geological Survey Report. 99 – 50.

Nwajide, C. S., (2013). Geology of Nigeria’s sedimentary Basins. Geoscan Technical services Ltd. Akwa, 565P.

Nyantakyi, E. K., Hue, W. S., Borkloe, J. K., Qin, G., Cheng Han, M., (2013). Structural and Stratigraphic Mapping of Delta field, Agbada Formation, Offshore Niger Delta, Nigeria. American Journal of Engineering Research. 2,(11): 204 – 215.

Passey, Q. R., Creaney, S., Kulla, J. B., Moretti, F. J., Stroud, J. D., (1990). A practical model for organic richness from porosity and resistivity logs. AAPG Bulletin. 74, (12): 1777 – 1794.

Peters, K. E., (1986). Guidelines for evaluating Petroleum source rock using programmed pyrolysis. AAPG Bulletin. 70, (3): 318 – 329.

Peters, K. E., Cassa, M. R., (1994). Applied source rock geochemistry, petroleum system from source to trap magoon. AAPG Bulletin. 60, 93 – 117.

Stacher, P., (1995). Present understanding of the Niger Delta hydrocarbon habitat. In M. N. Oti and G. Postma (eds), Geology of Delta’s; A. A. Balkema, Rotterdam. 257 – 267.

Tissot, B., Durand, B., Espitalie, J., C0mbaz, A., (1974). Influence of nature and diagenesis of organic matter in formation/ AAPG Bulletin. 58,(3): 499 – 506.

Tissot, B. P., Welte, D. H., (1984). Petroleum formation and occurrence (2nd edition) Springer, 699.

Downloads

How to Cite

WALIEZI, CHIGBO A, OKPOR VICTOR I, G. J UDOM, & DOUGLAS ADAORA B. (2022). Evaluation of Petroleum Source Rock Using Well Logs in the Niger Delta Region of Nigeria. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, 8(5), 67–82. https://doi.org/10.31695/IJASRE.2022.8.5.7

Issue

Vol. 8 No. 5: IJASRE May-2022

Section

Articles

License

Copyright (c) 2022 WALIEZI, CHIGBO A, OKPOR VICTOR I, G. J UDOM, DOUGLAS ADAORA B

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.