Integrated approach for maximising recovery from Oligocene reservoir under bottom water drive Online publication date: Mon, 05-Jun-2017
by Manish Kumar; Pushpa Sharma; D.K. Gupta
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 15, No. 2, 2017
Abstract: The Barail formation of Oligocene age, in the upper Assam basin has major contribution in the oil production from North-Eastern part of India. This is a clastic formation which has been extensively developed initially using vertical wells and in the last decade using horizontal wells. In last 20 years only 13% of OOIP has been recovered due to improper drainage, high water cut and cessation of flow due to low THP. In order to accelerate the production level and recovery factor, a three-dimensional numerical reservoir simulator has been used for evaluating various scenarios (well intervention, vertical and horizontal infill locations, water injection, ICD application) after history matching the model. From the analysis, it is evident that application of ICD along with pressure maintenance is suitable for such reservoir. Depending on the scenario, the recovery factor increased from 13% to 24%. Economic indicators were formulated for all the scenarios at the end. [Received: July 12, 2016; Accepted: December 4, 2016]
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