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Effect of water salinity and rock components on wettability alteration during low-salinity water flooding in carbonate rocks

  • ICCESEN 2017
  • Published:
Arabian Journal of Geosciences Aims and scope Submit manuscript

Abstract

In this paper, contact angle measurements using crude oil, five carbonate rocks, and six brines were conducted to study the effect of water salinity and rock components on wettability alteration. The results showed that lowering water salinity results in wettability alteration of carbonate surfaces to more water-wet. And there exists an optimal salinity at which the maximum wettability alteration occurs. In addition, the optimal salinity tends to increase as the content of dolomite in the rock decreases gradually. When low-salinity water is kept the same, the lower dolomite content in the carbonate rock, the more water-wet the rock will tend to be.

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Funding

The study was financially supported by the National Natural Science Foundation Project(No. 51374222), the National Major Project(No. 2017ZX05032-004-002), the National Key Basic Research and Development Program(No. 2015CB2509005), and the Major Project of PetroChina(No. 2017E-0405).

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Authors and Affiliations

  1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China

    Wenbo Su, Yuetian Liu, Rukuan Chai & Yunpeng Wang

  2. Development Research Department of CNOOC Research Institute, Beijing, China

    Jian Pi & Changyong Li

Authors
  1. Wenbo Su
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  2. Yuetian Liu
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  3. Jian Pi
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  4. Rukuan Chai
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  5. Changyong Li
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  6. Yunpeng Wang
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Corresponding author

Correspondence to Yuetian Liu.

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This article is part of the Topical Collection on Geo-Resources-Earth-Environmental Sciences

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Su, W., Liu, Y., Pi, J. et al. Effect of water salinity and rock components on wettability alteration during low-salinity water flooding in carbonate rocks. Arab J Geosci 11, 260 (2018). https://doi.org/10.1007/s12517-018-3611-6

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  • DOI: https://doi.org/10.1007/s12517-018-3611-6

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