Determining Theoretic Water Cut with Improved Sweep Efficiency Modification Method

Xinjiang Petroleum Geology ›› 2007, Vol. 28 ›› Issue (6): 738-740.

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Determining Theoretic Water Cut with Improved Sweep Efficiency Modification Method

WU Yong¹, DU Zhi-min¹, CAI Xing-li¹, ZENG Jian², DENG Yuan-zhou³, DENG Sheng-hui⁴

1. Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Department of Technology, Tianjin Company, CNOOC, Tanggu, Tianjin 300452, China;
3. Guanghan Research Institute of Drilling and Recovery Technologies, Guanghan, Sichuan 618300, China;
4. Tuha Research Institute of Petroleum Engineering Technology, Shanshan, Xinjiang 838202, China

Received:2006-11-01 Revised:2007-06-15 Online:2007-12-01 Published:2020-08-03

Abstract

Abstract: The relative permeability curves obtained by core testing is not representative in case of serious heterogeneity of reservoir, which tends to big error in the theoretic water cut curves of oil reservoir obtained by sweep efficiency modification method. This paper presents an improved method for substituting relative permeability curve obtained by core testing, in which the relative permeability parameter is given by dynamic data. The results show that the theoretic water cut curves obtained by this improved method is more proper to reflect the actual performance.

Key words: water cut, recovery, sweep efficiency, relative permeability curve, reservoir performance

CLC Number:

TE331

WU Yong, DU Zhi-min, CAI Xing-li, ZENG Jian, DENG Yuan-zhou, DENG Sheng-hui. Determining Theoretic Water Cut with Improved Sweep Efficiency Modification Method[J]. Xinjiang Petroleum Geology, 2007, 28(6): 738-740.

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Determining Theoretic Water Cut with Improved Sweep Efficiency Modification Method

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