I. (a) NAME: Olugbenga Ajayi EHINOLA
(b) DATE OF BIRTH: 25 November 1964
(c ) DEPARTMENT: Geology
(d) FACULTY: Science
(e) COLLEGE: Not Applicable (N/A)
II. (a) FIRST ACADEMIC APPOINTMENT: Assistant Lecturer (7 November 1995)
(b) PRESENT POST: Reader (1 October 2009)
(c) DATE OF LAST PROMOTION: 1 October 2009
(d) DATE LAST CONSIDERED FOR PROMOTION: N/A
III. UNIVERSITY EDUCATION:
(a) University of Nigeria, Nsukka Oct., 1986 to Sept., 1990
(b) University of Ibadan, Ibadan Dec., 1992 to Sept., 1995
(c) University of Ibadan, Ibadan Dec., 1995 to June, 2002
(d) Institute of Process Engineering (IPE), Beijing June, 2006 to May, 2007
IV. ACADEMIC QUALIFICATIONS:
(a) B.Sc. (Hons.) in Geology, University of Nigeria, Nsukka, 2nd Class Upper, Sept., 1990
(b) M.Sc. in Petroleum Geology/Sedimentology, University of Ibadan, Sept., 1995
(c) Ph.D in Petroleum Geology/Environmental Geology, University of Ibadan, June, 2002
(d) Postdoctoral in Thermodynamics of Minerals, IPE, Chinese Academic of Sciences (CAS), Beijing China, May, 2007.
V. PROFESSIONAL QUALIFICATIONS AND DIPLOMAS:
a) Certificate of Attendance, International summer school on “Concepts and development of tools for information systems on internet (CODSIS)”, Computer Science, University of Ibadan, Ibadan, August, 2003
b) Registered by Council of Nigerian Mining Engineers and Geoscientists, May, 2004.
d) Certificate of Attendance, Training on Schlumberger Petrel TM Workflow Tools (S2S),
Schlumberger Training Center, University of Ibadan, Ibadan, August, 2002 and 2004.
VI. SCHOLARSHIPS; FELLOWSHIPS AND PRIZES:
(a) Chinese Academic of Sciences-TWAS Visiting Scholars Fellowship, 2011
(b) Shell Petroleum Development Company Sabbatical Fellowship, 2009/2010
(c) Chinese Academic of Sciences-TWAS Visiting Scholars Fellowship, 2008
(d) Chinese Academic of Sciences-TWAS Postdoctoral award, 2005
(e) International Association of Sedimentologists (IAS) 2002 Postgraduate Grants Award
(f) Bashorun Abiola M.K.O. Postgraduate Fellowship, University of Ibadan, May 2001
(g) DAAD Fellowship, Universität Tübingen, Institute of Geology, March, 1999
VII. HONOUR; DISTINCTIONS AND MEMBERSHIP OF LEARNED SOCIETIES:
(a) University of Ibadan MacArthur Research Grant Winner, 2009
(b) Petroleum Technology Development Fund (PTDF) Research Grant Winner, 2008
(d)NMGS / TOTAL FINA ELF Best Paper Award- Maiduguri 2004 - 2nd Prize
(e) International Association of Sedimentologists (IAS) 2004 Travel Grant Award
(f) NMGS / TOTAL FINA ELF Best Paper Award- Itakpe 2003 – 2nd Prize
(g) Berkner Fellowship grant by the American Geophysical Union (AGU), July 2003.
(h) Corporate Member, Nigerian Mining and Geosciences Society (NMGS; March, 1992)
(j) Active Member, Nigerian Association of Petroleum Explorationists(NAPE; Nov; 1996)
(k) Full Member, International Association of Sedimentologists (IAS; August, 1999)
(l) Active Member, American Association of Petroleum Geologists (AAPG; June, 2000)
(m) Corporate Member, Nigerian Association of Hydrogeologists (NAH, November, 2002)
(n) The Society of Organic Petrologists (TSOP, September 2006)
(o) Afro-Asian Association of petroleum Geochemists (AAAPG, March 2004)
VIII. DETAILS OF TEACHING EXPERIENCE AT UNIVERSITY LEVEL:
(i) 1995-1999: Assistant Lecturer, Department of Geology, University of Ibadan.
(ii) 1999-2002: Lecturer II, Department of Geology, University of Ibadan.
(iii) 2002-2005: Lecturer I, Department of Geology, University of Ibadan.
(iv) 2005-2008: Senior Lecturer, Department of Geology, University of Ibadan.
(v) 2009-2012: Reader, Department of Geology, University of Ibadan.
Participated in teaching of the following courses:
(a) at undergraduate Level: Units
GEY 284 Geological Map Interpretation & Field Mapping 3
GEY 308 Quaternary and Environmental Geology 2
GEY 337 Geochemistry 2
GEY 342 Palaeobiology I 2
GEY 357 Sedimentary Depositional System & Basin for Africa 2
GEY 384 Geological Field Mapping & Industrial Experience 2
GEY 455 Advanced Sedimentary Petrology 2
GEY 459 Petroleum Geology 3
GEY 484 Field Geology of Nigeria 2
GEY 486 Seminar in Geology 2
GEY 488 Project in Geology 6
(b) at postgraduate Level
GEY 702 Advanced Micropaleontology 3
GEY 705 Subsurface Geology 2
GEY 706 Petroleum Geology 3
GEY 707 Energy Resources 3
GEY 709 Sedimentary depositional system 3
GEY 780 Research Seminar 2
GEY 782 M.Sc. Project 6
(c) Undergraduate Project/Seminar Supervision:
(i) Already Supervised: 55
(ii) Under Supervision: 3
(d) Postgraduate Project/Seminar Supervision:
(i) Already Supervised: 26
(ii) Under Supervision: 5
(e) Administrative Responsibilities:
(i) Lecturer in charge of Computers, Museum and Library Matters
(ii) Assistant PG Coordinator (2005 to 2012)
(iii) Field work committee member
(iv) Acting Sub-Dean Biological/Earth Sciences (2005/2006 and 2007/2008)
(v) Guidance and Counseling to Students
(vi) Peer Reviewer, Journal of Mining and Geology (2001 till date)
(vii) Editorial Board Member of Nigeria Association of Petroleum Explorationists
(vii) Staff Administrator for ChevronTexaco Subsurface Resource Center
(viii) Assistant Hall Warden, Kuti Hall, 2008-2010
(ix) Hall Warden, Kuti Hall, 2011-2012
Theme: Nigeria is one of the developing countries endowed with numerous mineral resources and fossil fuels. Oil shales, tar sand (bitumen) and coal have been discovered in all continents, oceans and seas but are particularly abundant in the Atlantic Ocean with their occurrence coinciding with periods of transgression. There is little or no awareness as to the use of oil shale in Nigeria because of the early discovery of crude oil in the Niger Delta Basin.
The recent interest in oil exploration in the Benue Trough as well as the establishment of Gas project termed “Liquified Natural Gas" in Nigeria provided the impetus for more research work. The Abakaliki Fold Belt (Anambra and Afikpo Basins) is one of the petroliferous basins expected to yield appreciable quantity of hydrocarbon apart from the Niger Delta basin. Knowledge of the depositional environment, source rock quality; quantity and thermal history of the mid-Cretaceous black shales with more emphasis on the coal, bitumen and oil shale deposit had therefore been the focus of research over the years. Correlation has been made with other basins in Africa and the worldwide occurrences. Economic and environmental implications of the coal, bitumen and oil shale deposits had also been considered for its optimal resources quality. Since the mining of these deposits has been established in other countries, comprehensive information on the effects of mining activities on the environment is needed. Previous studies have provided information on factors affecting human health (Ehinola et al., 2005), which have to be taken into account by the mining industry when aiming for sustainable development of such industry in Nigeria.
Research in areas of geophysics for groundwater and mineral exploration, organic and inorganic geochemistry involving source rock characterization and environmental pollution studies in soils, rocks and water have also been investigated. The research in future will focus more on oil well drilling fluids, formation waters, empirical analysis, sand fairways prediction, distribution patterns of porosity and permeability in the reservoir sands of the Niger Delta, GIS applications in environmental studies, thermodynamic modeling of minerals and evaluation of the mid-Cretaceous cool tropics paradox using isotopic GCMS, foraminifera, calcareous nannofossils, paleosol and sideritic data sets. These will further enhance my interdisciplinary approach and long term professional relationships. The new techniques to sustainable energy development most especially on the drilling mud formulation and shale gas as well as sideritic paleosol studies in relation to global warming will be the ultimate goal.
(i) Economic Evaluation, Recovery Techniques, and Environmental implications of the oil shale
deposits in the Abakaliki Fold Belt, SE, Nigeria
(ii) Geochemical Evaluation of coal, oil shale, seepages and bitumen from Nigeria basins.
(iii) Trace Elements Variations in the mid-Cretaceous black shales of the Abakaliki Anticlinorium, SE, Nigeria
(iv) Thermodynamics study on the utilization of Lokpanta Oil shale in the cement industry.
(v) Mid-Cretaceous Foraminiferal zonation and the oil shale interval in the southeastern, Nigeria
(b) In Progress:
(i) Predictive modeling and hydrocarbon prospectivity of Anambra and Niger Delta Basins
(ii) Sand fairways prediction in the outer neritic to bathyal zone of the eastern coastal swamp depobelt of Niger Delta
(iii) Synthetic based fluid formulations using agricultural crops, micro-algae and vegetables
(iv) Shale gas potential of Nigeria inland basins and Niger Delta.
(v) Application of diamondoids to oil exploration and exploitation.
(vi) Porosity and Permeability variation in the Niger Delta Depobelts.
(vii) Sequence stratigraphy of some selected oil fields from Niger Delta
(c) Dissertation and Thesis:
(i) EHINOLA, O.A. 2002. Depositional Environment and Hydrocarbon Potential of the Oil Shale Deposit from the Abakaliki Fold Belt, Southeastern Nigeria, Ph.D thesis, University of Ibadan, 240p.
(a) Books already published: Nil
(b) Chapters in Books already published:
1. Ehinola, O.A., and Nneli W. O. (2007): Predictive model for aquifers and Quality of Groundwater in Onithsha Metropolis, Anambra Basin Nigeria In: Ramanathan, A.I., Bhattacharya, P., Chandrasekharam, D., Keshari, A.k., Thangarajan, M. and Bundschuh, J. (Editors), Groundwater for sustainable development: problems, perspectives and Challenges, First Edition, New Delhi, Chapter 17, p.162-171. (India)
My contribution: 80%
2*. Ehinola, O.A., and Falode, O.A., Olorunnisola, A.O., and Sonibare, O.O. (2010):
Improving Rheological and Filtration Properties of Locally Formulated Drilling Mud
with the Addition of Nigerian Lignite at High Temperatures and High Pressures
(HTHP). 2010 Compendium of Petroleum Technology Development Fund Oil and
Gas Research, Chapter 3, p.135-225
My contribution: 40%
c) Articles that have already appeared in Refereed Conference Proceedings:
3. Ehinola, O.A., Akanji, L.T., Oladunjoye, M.A., Falode, O.A., Ejeh, O.I., Nwankwo, P and Fasakin, A. (2005): Fault modeling and Flow: New insight into part of central swamp depobelt of Niger Delta, Nigeria: Meeting Future Demand through wise decision. Kuwait International Petroleum Conference and Exhibition, Conference Proceedings- http://www.kipce.net/tp.pdf (Kuwait) My Contribution: 30%
4 Bamidele, F.O. And Ehinola, O.A. (2009): Fault Analysis, Stratigraphic
Discontinuities and 3D Structural Modelling of Tb-Field, Offshore Niger Delta.
American Association of Petroleum Geologists Conference Proceedings, Rio de Janeiro, Brazil, Search and Discovery Article, #40526, http://www.aapg.org/ (Brazil)
My contribution: 50%
(d) Patents: Nil
(e) Articles already Published in Learned Journals:
5. Ehinola, O.A. (2002): Hydrochemical characteristics of Groundwater from part of the Basement Complex Southwestern Nigeria. Journal of Mining and Geology, vol. 38 (2), p.125-133 (Nigeria) My contribution: 100%
6. Ehinola, O.A., Ekweozor, C.M, Oros, D.R. and Simoneit, B.R.T. (2002): Geology, Geochemistry and Biomarker Evaluation of the Lafia-Obi coal, Benue Trough, Nigeria. FUEL, Elsevier, vol. 81, p.219-233 (UK) My contribution: 50%
7. Ehinola, O.A. and Abimbola, A.F. (2002): Preliminary Assessment of major and Trace Elements Content in the middle Cretaceous Black Shales from the Abakaliki Fold Belt, Southeastern Nigeria. NAFTA, Oil and Gas Journal, vol. 53, no. 9. p23-26. (Croatia) My contribution: 60%
8. Ehinola, O.A., Bassey, C.E. and Ekweozor, C.M. (2003). Preliminary studies of the Lithostratigraphy and Depositional Environment of the Oil Shale Facies in the Abakaliki Fold Belt, SE, Nigeria. Journal of Mining and Geology, vol. 39, no.2, p.85-94. (Nigeria) My contribution: 60%
9. Sonibare, O.O., R. Egashira, and Ehinola, O.A. (2003): Pyrolysis study of Nigeria Bitumen and its fractions. NAFTA, Oil and Gas Journal, vol. 54, no. 3, p.105-110. (Croatia) My contribution: 30%
10. Ehinola, O.A., Badejoko, T.A., Ekweozor, C.M. and Adebowale, K.O. (2004): Organic facies variations in the middle Cretaceous Black shales of the Abakaliki Fold Belt, Southeastern Nigeria. NAFTA, Oil and Gas Journal, vol. 55, no. 12, p. 505-515 (Croatia) My contribution: 50%
11. Sonibare, O.O., Ehinola, O.A., Egashira, R. and Keangiap, L (2005): An Investigation into the Thermal Decomposition of Nigerian coal. Journal of Applied Science, vol. 5, no. 1, p. 104-107. (Pakistan) My contribution: 30%
12. Ehinola O.A., Sonibare, O.O. and Akanbi, O.A. (2005): Economic Evaluation, Recovery Techniques, and Environmental implications of the oil shale deposits in the Abakaliki Fold Belt, SE, Nigeria. Oil Shale Journal, Estonian Academic Publishers, vol. 22, no. 1, p.1-15. (Estonian) My contribution: 60%
13. Ehinola, O.A., Sonibare, O.O, Falode, O.A and Awofala, B.O. (2005): Hydrocarbon Potential and Thermal Maturity of Nkporo Shale in the Lower Benue Trough, Nigerian. Journal of Applied Sciences, vol. 5, no. 4, p. 689-695. (Pakistan)
My contribution: 40%
14. Ehinola, O.A., Joshua, E.O, Opeloye, S.A and Ademola, J.A. (2005): Radiogenic Heat Production in the Cretaceous Sediments of Yola Arm of Nigeria Benue Trough: Implications for Thermal History and Hydrocarbon Generation. Journal of Applied Sciences, vol. 5, no. 4, p. 696-701 (Pakistan) My contribution: 40%
15. Sonibare, O.O., Ehinola, O.A., and Egashira, R. (2005): Thermal and Geochemical Characterization of Lokpanta oil shale, Nigeria. Energy Conversion and Management, Elsevier, vol. 46, p. 2335-2344. (UK) My contribution: 30%
16. Ehinola, O.A., A.O. Opoola and H.A. Adesokan., (2005): Empirical
analysis of Electromagnetic profiles for groundwater prospecting in rural areas
of Ibadan, soutwestern Nigeria. Hydrogeology Journal, Springer-Verlag, vol.
14, p. 613-624. (Netherland) My contribution: 60%
17. Ehinola, O.A., O.O. Sonibare, A.M. Falana and D.M Jarvie. (2006): Organic Geochemistry and Biomarker Evaluation of shale units of the Maastrichtian
Patti Formation, Bida Basin, Nigeria. Nigerian Association of Petroleum
Explorationists Bulletin, vol.19, no. 1, p.78-88. (Nigeria) My contribution: 50%
18. Ehinola, O.A., and Falusi O.D. (2008): Application of GIS for management and remediation of polluted water in parts of Lagos Creeks, Southwestern Nigeria. Pollution Research, vol. 27, no. 1, P. 1-6. (India) My contribution: 80%
19. Falode, O.A., Ehinola, O.A. and Nebeife, P.C. (2008): Evaluation of local
benthonic clay as oil well drilling fluids in Nigeria. Journal of Applied
Clay Science, Elsevier, vol. 39, p. 19-27. (Netherlands) My contribution: 40%
20. Ehinola, O.A., Oladunjoye, M.A, and Okwuogoli, U.G. (2008): Application of GIS and Multicriteria Analysis for delineating polluted underground water in parts of Lagos, Southwestern Nigeria. Pollution Research, vol. 27, no.1, p. 13-25. (India)
My contribution: 60%
21. Sonibare, O.O., Alimi, H., Jarvie, D. And Ehinola, O.A. (2008): Origin and Occurence of Crude Oil in the Niger Delta. Journal of Petroleum and Engineering Science, Elsevier, vol. 61, p.99-107 (Netherlands). My contribution: 20%
22.Ehinola, O.A and Zhu, Q. (2008): Utilization of Lokpanta oil shale in the cement manufacturing in Nigeria: A thermodynamic approach. Oil Shale Journal, Estonian Academic Publishers, vol., 25, no. 3, p. 310-237. (Estonian).
My contribution: 80%
23. Ehinola, O.A., and Adene, T.M. (2008): Preliminary investigation on acid
generating potential of coals from Benue Trough, Nigeria. Petroleum and
Coal, vol. 50, no. 3, p. 19-26. (Slovakia) My contribution: 80%
24. Ehinola, O.A., Oladunjoye, M.A., Adabanija, M.A. And Coker, T.J., (2009): Quality of underground water and the health hazards implications in Agbowo Area of Ibadan, southwestern Nigerian. Science Focus Journal, vol. 14, no. 2, p. 223-230. (Nigeria) My contribution: 40%
25. Ehinola, O.A., Oladunjoye, M.A. and Gbadamosi, T.O. (2009): Chemical
composition, geophysical mapping and reserve estimation of clay deposit from part of southwestern Nigeria. Journal of Geology and Mining Research, vol. 1, no 3, p. 57-66. (USA) My contribution: 60%
26. Falode, O.A., Ehinola, O.A. and Adebisi, N.O., (2009): Geochemical Characterization of Formation waters in the Greater Ugheli depobelt of Niger Delta. International Journal of Chemistry, vol. 19, no 3, p. 125-133. (India)
My contribution: 40%
27. Ehinola, O.A., and Ejeh, I.O, (2009). Basic geometry and sedimentary fill modeling of parts of onshore Niger delta, Nigeria. Kuwait Journal of Science and Engineering, no. 2a, vol. 36, p. 147-163. (Kuwait) My contribution: 80%
28. Ehinola, O.A., Ojo E. A. and Fadiya, L.S. (2009): Biozonation and Correlation of BDX-1 And BDX-2 Wells of Deep Offshore Niger Delta using Calcareous Nannofossils. Nigerian Association of Petroleum Explorationists Bulletin, vol. 22, no. 1, p.78-88. (Nigeria) My contribution: 60%
29*. Ehinola, O.A., White, T.S., and Akinwumiju. A.A. (2009): Petrological and
Geochemical Studies in the Maastrichtian Patti Formation, Bida Basin, Nigeria.
Sciencefocus Journal, Vol. 14, No. 3, p.364-376. (Nigeria) My contribution: 60%
30*. Ehinola, O.A., Falode, O.A. and Akaimaro, B. (2010): Characterization and
Quantification of the Bakam Field, Offshore Niger Delta, Nigeria. Petroleum Science
and Technology, vol. 28, issue 8, p.831-851. (USA) My contribution: 60%
31*. Ehinola, O.A. (2010): Biostratigraphy and Depositional Environment of the
oil shale deposit in the Abakaliki fold belt, southeastern Nigeria. Oil Shale Journal, Estonian Academic Publishers, vol. 27, no. 2, p.99-125. (Estonian)
My contribution: 100%
32*. Ehinola, O.A., and Ogundele, O. (2010): Prediction of overburden and
groundwater quality assessment in parts of Lagos, southwestern Nigeria. Continental Journal of Environmental Sciences, vol. 4, p. 26-35. (Nigeria)
My contribution: 80%
33*. Ehinola, O.A., Ejeh, O.I., and Chinyere, N. (2010): Petrography, microfacies and
Geochemical characterization of shallow water carbonates of Nkalagu Formation,
southeastern Nigeria. Sciencefocus Journal, Vol. 15, No. 1, p.87-96 (Nigeria)
My contribution: 70%
34*. Ehinola, O.A, Shengfei, Q. and Onibonoje, A. A. (2010): The Paleoenvironmental significance of pyritic nodules from Lokpanta oil shale interval in the petroleum system of lower Benue Trough, Nigeria. Petroleum and Coal, Vol. 52, no. 2, p. 110-122. (Slovakia) My contribution: 70%
35* Famakinwa J., Ehinola, O.A., and Yuhong, L. (2010): Organic Geochemical Evaluation of bituminous rocks and coals from Dahomey Basin. Nigerian Association of Petroleum Explorationists Bulletin, vol. 22, no. 2, p.15-27 (Nigeria)
My contribution: 40%
36*. Ejeh, O.I., Ehinola, O.A., Frielingsdorf, J.R. and Obilaja, O.T. (2011): 3D
Stratigraphic Forward Modeling of Clastics Facies Distribution of the Delta:
Implications on Source Rock, Reservoir and Seal Prediction. Nigerian Association of
Petroleum Explorationists Bulletin, vol. 22, no. 2, p.15-27. (Nigeria)
My contribution: 40%
37*. Umoh, E.E., Ehinola, O.A., and Osterloff P.L. (2011): An assessment of Abundance
and Distribution patterns of major Calcareous Nannofossil as observed from
Oligocene-Pliocene Subsurface sediments of the Niger Delta, Nigeria. Nigerian
Association of Petroleum Explorationists Bulletin, vol. 22, no. 2, p.39-48. (Nigeria)
My contribution: 40%
38*. Ibitola, M.P, Ehinola, O.A., and.Akinnigbagbe, A.E. (2011): Electrical Resistivity
Method in Delineating Vadose and Saturated Zone in some selected Dumpsites in
Ibadan, parts of southwestern Nigeria. International Journal of Geomatics and
Geosciences, vol. 2, no. 1, p. 164-178. (India) My contribution: 40%
39*. Ehinola, O.A., Oluwajana, A. and Nwabueze, C. O. (2012): Depositional
Environment, Geophysical Mapping and Reserve Estimation of Limestone Deposit in
Aromogija-Okeluse Area, southwestern Nigeria. Research Journal in Engineering
and Applied Sciences, vol. 1, no. 1, p. 7-11. (USA) My contribution: 60%
(Accepted December 21, 2011)
40*. Adeonipekun, P.A., Ehinola, O.A., Yussuph, I.A., Toluhi, A. and Oyelami, A.
(2012): Bio-sequence Stratigraphy of Sagamu Quarry outcrop Benin Basin,
southwestern Nigeria. World Applied Sciences Journal, vol. 18, no. 1, p.91-108
(Iran) My contribution: 30% (Accepted March 30, 2012
41*. Ehinola, O.A., Falode, O.A. and Jonathan, G. (2012): Softening Point and
Penetration Index of Bitumen from parts of southwestern Nigeria. NAFTA, Oil and
Gas Journal, vol. 63, no. 9-10, p. 319-323 (Croatia) My contribution: 60%
(Accepted April 30, 2012)
42*. Ehinola, O.A., Oluwajana, A. and Adekoya, A.T. (2012): Geophysical investigation
and Reserve Estimation of a Coal seam in Ute Area, southwestern Nigeria. Petroleum
and Coal, vol. 54, no. 3, p. 252-259 (Slovakia) My contribution: 60%
(Accepted July 30, 2012)
(f) Books, Chapters in Books and Articles already accepted for Publications: Nil
(g) Technical Report and /or Monographs:
43. Ehinola, O.A, (2009): Geochemical evaluation of ON and OS wells from
Niger Delta. Technical Report submitted to Geoscience Solution Nigeria Ltd.,
Lagos, 27p. My contribution: 100%
44*. Ehinola, O.A, (2010): Sand Fairways prediction in the outer Neritic to Bathyal zone
of the eastern coastal swamp, Onshore, Niger Delta. Technical Report submitted to
Shell Petroleum Development Company, Port-Harcourt, Nigeria, 32p.
My contribution: 100%
XI. MAJOR CONFERENCES ATTENDED WITH REPORTS PAPER READ:
(i) 28th Annual Conference of the Nigerian Association of Petroleum Explorationists (NAPE, November, 2009).
Paper presented: Ehinola, O.A., and Liu, Q., 2009. Geochemistry and Environmental Appraisal of some selected coals from Nigeria, Abuja, p. 28.
(ii) 2nd International Conference on Oil and Gas Technology for sustainable Development: Problems, Perspective, and Challenges (OGC, June, 2011).
Paper presented: Ehinola, O.A., Babatunde, O. and Yuhong, L., 2011. Organic Geochemical Evaluation of Bituminous rocks and coals from Nigeria, Aalburg, Denmark, p. 18.
(iii) 30th Annual Conference of the Nigerian Association of Petroleum Explorationists (NAPE, November, 2011).
Paper presented: Ehinola, O.A., Obilaja, O., Ladipo K.O and Monye, M., 2011. Sand fairways prediction in the Outer Neritic to Bathyal zone of the Eastern Coastal Swamp of Niger Delta , Lagos, p. 31.
(iv) 48th Annual Conference of the Nigerian Mining and Geosciences Society (NMGS March, 2012).
Paper presented: Ehinola, O.A., Boboye, O.A. and Nneli, W.O., 2012. Geophysical mapping and analysis of pumping test in the wells from phreatic basement aquifers of University of Ibadan, southwestern Nigeria, Lagos, p. 48.
(v) Afro-Asian Association of Petroleum Geochemists (AAAPG) International Conference and Exhibition, Hangzhou, P.R. China, 2012.
Paper presented: Ehinola, O.A. and Adewole, A.O., 2012. Thermal maturity and Burial history modeling of Anambra Basin, southeastern Nigeria, Hangzhou, p. 28
XII. LIST OF 10 PUBLICATIONS THAT BEST REFLECT MY CONTRIBUTION TO KNOWLEDGE
A. Petroleum Geology / Geochemistry
Paper 6: This paper examines a proper evaluation of the oil source rock potential and industrial utilization of the coal. The study revealed that the bitumen composition reflect full maturity.
Paper 36: This paper examines the paleoenvironmental significance of the pyrite concretion in the petroleum system of the lower Benue trough of Nigeria. The Lokpanta oil shale interval is deposited under an Oceanic Anoxic Event (OAE) and is capable of generating hydrocarbon however, the authigenic nature and euhedral texture of the pyrite grains suggest metamorphic or thermal alterarion for the formation of the nodules. This will definitely have effects on the hydrocarbon accumulation in the study area.
B. Basin Analysis and Basin Modelling
Paper 29: This paper uses a sequence stratigraphic interpretation approach to model the sedimentary fill in time and space. Interpretation and modeling results show that good sandstone reservoirs probably formed during early transgressive and late highstand systems tracts. The model creates a better understanding of the sub-surface geology that may be useful for future exploration and development plans.
Paper 32: This paper is on reservoir characterization and quantification of an oil field in the Niger Delta. Structural maps of horizons of wells identified to be hydrocarbon zones were produced, indicating that the trapping mechanisms are mainly fault-assisted anticlinal closures. Petrophysical parameters, time-depth structure and isopach maps were obtained. Potential prospects were identified from seismic attributes and reservoir models generated. The total net volume of the reservoirs yielded oil-in-place of 41.54 MMbbl and gas-in-place of 121.9 tcf.
C. Hydrogeology / Environmental Geology
Paper 12: This paper is on the economic evaluation, recovery techniques and environmental implications of the oil shale deposition Nigeria. This study determines the areal extent, reserve estimate and recoverable hydrocarbon estimate with retorting method as the best technique of exploitation.
Paper 16: This paper examines the development of groundwater in the basement complex area. A combined use of empirical analysis with resistivity was demonstrated to be useful for rapid evaluation of the overburden thickness and level of fracturing. Borehole yield was found to depend on the fracture density than on the overburden thickness.
D. Biostratigraphy and Sedimentology
Paper 30: This is a study aimed at subdividing the sequence within the depth intervals of the two wells from Niger Delta into zones. The two wells correlate with each other based on the related zones derived. The resulting biozonation has further helped to subdivide the Deep Offshore Niger Delta Neogene sequence into easily recognizable biostratigraphic units which will enhance oil exploration in the area.
Paper 33: This is a study aimed at demarcating the oil shale interval in the Abakaliki fold belt, southeastern Nigeria. The oil shale was found to be deposited during the maximum transgression occurring at the Cenomanian-Turonian Boundary Event (CTBE). The Eze-Aku Formation was assigned to this depositional cycle and the occurrence of some Tethyan fauna (foraminifera and ostracod species) indicates possible connection between the Tethys and the Atlantic Seas.
E. Local Raw Material Evaluation
Paper 2: This paper entitled improving rheological and filtration properties of locally formulated drilling mud with addition of Nigeria lignite at high temperature and high pressure produced a new recipe for the production of locally based drilling mud for oil and gas production. The research through a careful documentation of the various mineralogical and geochemical properties of the varieties of clays in Nigeria identified the peculiar composition of the local clays and the inherent deficiencies. This intensive research on the local clay properties compare with the world class accepted Wyoming bentonites suggest that the rheological and physical properties could be improved with additives such as sodium carbonate, lignite, barite and hematite/ilmenite most of which are abundance locally. This will enhance the usage of Nigeria clays as drilling mud in the oil and gas industry.
Paper 22: This paper is on the utilization of Lokpanta Oil shale as raw material in the cement manufacturing in Nigeria. A thermodynamic model is applied to calculate the amount of oil shale ash (OSA), which could be used as raw material in the manufacturing of Ordinary Portland cement (OPC). From the different blending ratio employed in the thermodynamic calculation, the optimum blended ratio obtained for the constituents that is closed to Portland cement was 20% OSA, 15% clay and 65% of limestone. Temperature between 1300 and 1400OC is suggested for the blending ratio that makes up all necessary components of cement clinkers indicating a reduction in the required clinkering temperature.
Dr. O.A. Ehinola Signature and Date
MY RESEARCH FOCUS
My field of research is petroleum geology, sedimentology and environmental geology focusing on coal, crude oil, bitumen, oil shale, clay and groundwater resources. My studies encompass basin analysis, organic and in-organic geochemistry, basin modeling, hydrogeology, local raw material evaluation, and environmental impact assessment and remediation.
On petroleum geology, I have used both organic and in-organic geochemistry to evaluate thermal maturity, distribution of biomarkers, and the oil source rock potential of various basins within Nigeria (Papers 6, 10, 13, 14, 17, 29, 33, 34, 35 and 43). The Nigerian coals were characterized by thermogravimetry analysis and the coals belong to the low-rank class, within the lignite and sub-bituminous group. The coals are not cokable alone but could serve as suitable blends with coking coal of higher ranks (Paper 6).
I have worked extensively in the last thirteen years on the lithostratigraphy, sedimentation conditions, mineral composition, planktonics and benthonics foraminiferal assemblages in order to identify the depositional setting of source rock, oil shale, coal and black shales in Nigeria (Papers 7, 8, 28, and 30). I have used a sequence stratigraphic interpretation approach to model the sedimentary fill in time and space (papers 27 and 44. Interpretation and modeling results show that good sandstone reservoirs probably formed during early transgressive and late highstand systems tracts. The model creates a better understanding of the sub-surface geology that may be useful for future exploration and development plans (Paper 27).
On environmental geology, my studies examine the quality, uses and water types relative to the different rock types in some parts of Nigeria (Papers 1, 5 and 24). The water quality is within the acceptable limits of world health organization standard for domestic, agriculture and other industrial uses. The development of groundwater in the basement complex area was also examined. A combined use of empirical analysis with resistivity was demonstrated to be useful for rapid evaluation of the overburden thickness and level of fracturing. Borehole yield was found to depend on the fracture density than on the overburden thickness (Paper 16). My studies also provide information on aerial extent, reserve estimate, recovery techniques and possible environmental impacts of Nigerian oil shale (Paper 12). This information is needed by the mining sector when aiming for a sustainable development / conversion of oil shale to liquid fuel. I have also used geographic information system (GIS), hydrochemical and geophysical techniques to delineate aquifers and polluted zones in Nigeria (Papers 18 and 20). This is useful for remediation purpose and could be applied to the broader domain of land use management.
My recent studies involve evaluation of the performance of the local clays for drilling operations in Nigeria and utilization of the oil shale as raw material for cement manufacturing in Nigeria (Paper 2). Chemical composition, geophysical technique and reserve estimation of clay, limestone and coal deposits were also studied and were used to evaluate their thickness, reserve and in the design of the exploitable zone of the deposits (Papers 19, 25, 39 and 42).