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Volume 2017 (2017), Article ID 5758046, 8 pages
Research Article

Experimental Study on Water Sensitivity Difference Based on Oiliness of Porous Medium Rock

Jie Li,1,2,3 Wei Li,4 and Li Li5

1School of Energy Resource, China University of Geosciences, Beijing, China
2MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
3University of Tulsa, Tulsa, OK, USA
4Institute of CNOOC, Shenzhen Branch, Shenzhen, Guangdong 518000, China
5Pu Yang Best Oil-Gas Technology Service Co. Ltd., Henan, China

Correspondence should be addressed to Jie Li; ude.aslutu@4740lij

Received 20 June 2017; Accepted 28 September 2017; Published 27 November 2017

Academic Editor: Zhenhua Rui

Copyright © 2017 Jie Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study presents the differences of water sensitivity experiment of porous medium rock between conventional dry core samples and oil-bearing core. The comparison was made to analyze the impact of single-phase fluid and multiphase fluid on the actual sensitivity of rock. The nuclear magnetic resonance (NMR) test was carried out to reveal the distribution of oil in porous medium and the microscopic influence mechanism of oil phase. The study shows that the initial oil in place could isolate the clay from water, and then the expansion and the migration of the clay were prevented to reduce the decrease of degree of damage.