Experimental investigation of oil recovery by different injection scenarios under low oil/gas IFT and mixed-wet condition: water-flood, gas injection, WAG and SWAG injection

Mehran Sedah Sohrabi, Seyyed Mobeen Fatemi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Water flooding and gas injection are two widely used improved oil recovery techniques that can be applied individually or combined as water alternating gas (WAG) or simultaneous gas and water (SWAG) injection. To do reservoir development planning, for possible implementation of these oil recovery schemes, reliable reservoir performance prediction is needed. Most of the existing reservoir simulators are unable to adequately account for all the
complex multiphase and multiphysics processes involved in these oil recovery techniques. We present the results of a comprehensive series of well-controlled coreflood experiments carried out under mixed-wet condition using a very low IFT gas-oil system. The experiments include oil recovery by water flood (WF), continues gas injection (CGI), two series of WAG, and two series of SWAG injection tests. The difference between the two WAG experiments is the order in which gas and water injections are carried out. The results show that for mixed-wet rocks, among the studied injection strategies, SWAG is the worst and alternating injection of water and gas (WAG), starting with a water flood period, is the best injection strategy.
Original languageEnglish
Title of host publicationAbu Dhabi International Petroleum Exhibition and Conference 2012 (ADIPEC 2012)
Subtitle of host publicationSustainable energy growth: people, responsibility, and innovation
Place of PublicationRichardson, Texas
PublisherSociety of Petroleum Engineers
Pages828-848
Number of pages21
ISBN (Electronic)9781613992173
ISBN (Print)9781622768745
DOIs
Publication statusPublished - Nov 2012
EventAbu Dhabi International Petroleum Conference and Exhibition - Abu Dhabi, United Arab Emirates
Duration: 11 Nov 201214 Nov 2012

Conference

ConferenceAbu Dhabi International Petroleum Conference and Exhibition
CountryUnited Arab Emirates
CityAbu Dhabi
Period11/11/1214/11/12

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