Demonstration of MEOR as an alternative enhanced oil recovery technique in Nigeria offshore oilfield
Abstract
Eni oilfield has been experiencing production decline with increase in water output. The implementation of enhanced oil recovery (EOR) can help to extract some percentages of the original oil in place (OOIP). EOR methods are capital intensive and few are environmental hazardous. In a bid to address these issues, this paper discusses on an alternate economically viable enhanced oil recovery technique which has the potential to curb the challenges of other conventional EOR methods.This work suggested a 3 stage approach of applying microbial enhanced oil recovery (MEOR) method for oil recovery in Eni field. The reservoir characteristics in Eni field were studied, the average porosity value of the reservoirs is between 0.238 and 0.241.The reservoir characteristics and parameters were found suitable for the application of MEOR technique for effective oil drainage from the delineated reservoir compartments. Microbial flooding was found to be matured in reservoirs with temperature less than 200 F, brine salinity not more than 100,000 ppm, water depth not more than 3500m and permeability should be above 30 (Md). It was recommended that MEOR approach should be applied in Eni Oilfield for increment of oil production and reduction in water cut due to its efficiency and economic viability.
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Author Biographies
Nsisong E. Udosoh holds a bachelor’s degree in Marine Engineering from Akwa Ibom State University,Nigeria. He is currently undergoing a master’s degree in Marine Engineering with specialty in Offshore Engineering at Federal University of Petroleum Resources, Delta State, Nigeria. His research interests are in oil and gas pipeline design and modelling, design of offshore structures, subsea production systems, reservoir stimulation and enhance oil recovery (EOR), mechanic of ocean waves and the applications of artificial intelligence in offshore engineering industry.
Thaddeus Chidiebere Nwaoha obtained his PhD in Marine and Offshore Technology and MSc in Marine and Offshore Engineering from Liverpool John Moores University, UK in 2011 and 2006 respectively. His professional experiences comprise of academic and industrial experiences in LNG carrier system maintenance and risk modeling, inspection of topside and subsea equipment, quality assurance, safety, risk and reliability analysis of marine and offshore systems. He has served as an inspection, quality assurance, safety and reliability engineer in marine and offshore companies and a member of professional bodies such as IMarEST, NSE, NIMENA and COREN. Since 2010, he has authored and co-authored more than 46 journal papers in world leading journals. His research interests are system failure analysis, design for safety of marine and offshore system, optimization, maintenance modeling and risk/reliability analysis. Currently, he serves as a senior lecturer in Marine Engineering Department, Federal University of Petroleum Resources, Nigeria and marine/offshore risk engineering consultant for various companies.
Copyright (c) 2020 Nsisong Emmanuel Udosoh, Thaddeus Chidiebere Nwaoha
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