Smart waterflooding of homogeneous and heterogeneous cores from carbonaceous reservoir

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Abstract

The core scale heterogeneity is an important factor to account for enhanced oil recovery. The pore geometry and surface structure on the microscale were listed among the important factors, responsible for the different results from different rocks upon injection of low salinity brine. However, the core-scale heterogeneity has not drawn sufficient attention in the field of smart waterflooding, and its importance for the results of the flooding experiments has been overlooked. In this work we intend to find the evidence of the impact of heterogeneity on smart waterflooding under similar core flooding procedures. We have investigated smart waterflooding with homogeneous and heterogeneous carbonaceous cores from the North Sea reservoirs. Two processes have been tested: low salinity flooding with subsequent compression of a core, and injection of the brine containing bicarbonates. In both cases flooding of the heterogeneous cores resulted in a higher recovery than for the homogeneous cores.
Original languageEnglish
Title of host publicationProceedings of the 81st EAGE Conference and Exhibition 2019
Number of pages5
PublisherEuropean Association of Geoscientists and Engineers
Publication date2019
DOIs
Publication statusPublished - 2019
Event 81st EAGE Conference and Exhibition 2019 - ExCeL Centre, London, United Kingdom
Duration: 3 Jun 20196 Jun 2019
Conference number: 81

Conference

Conference 81st EAGE Conference and Exhibition 2019
Number81
LocationExCeL Centre
CountryUnited Kingdom
CityLondon
Period03/06/201906/06/2019

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