Improved Oil Recovery from Carbonate Reservoirs by Tuning Injection Seawater Composition

Jiazhong Wu; Fanghui Liu; Siyu Yang; Haishui Han; Xinglong Chen; Hui Yang

doi:10.3390/en15176405

Energies (Sep 2022)

Improved Oil Recovery from Carbonate Reservoirs by Tuning Injection Seawater Composition

Jiazhong Wu,
Fanghui Liu,
Siyu Yang,
Haishui Han,
Xinglong Chen,
Hui Yang

Affiliations

Jiazhong Wu: State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development of Petro China, Beijing 100083, China
Fanghui Liu: SINOPEC Research Institute of Petroleum Engineering Co., Ltd., Beijing 102206, China
Siyu Yang: State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development of Petro China, Beijing 100083, China
Haishui Han: State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development of Petro China, Beijing 100083, China
Xinglong Chen: State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development of Petro China, Beijing 100083, China
Hui Yang: CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China

DOI: https://doi.org/10.3390/en15176405
Journal volume & issue: Vol. 15, no. 17
p. 6405

Abstract

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In order to improve the adaptability of low-salinity waterflooding technology in some areas where freshwater resources are scarce, we aimed at implementing the low-salinity effect (LSE) in carbonate reservoirs through tuning injection seawater composition. LSE of ion tuning water (ITW) was verified by the results of core flooding tests, obtaining a water-free recovery factor of 50.7% and cumulative oil recovery of 77.2%. The micro mechanisms behind it were revealed via direct force-measuring and Zeta parameter (Zetap) measuring. Our results are expected to provide a new LSW strategy via tuning injection seawater composition in the case of carbonate reservoirs.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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