Experimental Study on Reducing Water Phase Trapping in Tight Gas Reservoirs

Abstract:

This document explains and demonstrates how to reduce water phase trapping in tight gas reservoirs during drilling. The water phase trapping laboratory device and experiment method has been studied, through the experiments on reservoir water phase trapping of western Sichuan Basin in China, Knowing that the damage is very serious, water self absorption experiments with different periods show that porosity and permeability of cores are basically above 50%. for the reason, the high capillary pressure and low water saturation are the main factors. Water phase trapping damage prevention measures has been put forward, including avoiding using water-based operating fluid as much as possible, minimizing or even avoiding the invasion of water-based operating fluid, and reducing interfacial tension and promote smooth operating fluid flow back.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 3293-3297
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.3293
• Online since: February 2013
• Authors: Hao Zhang, Xiao Ning Feng, Ji Ping She, Fu You Huang, Guan Fang Li
• Keywords: Drilling, Experimental Study, Formation Damage, Tight Sandstone, Water Phase Trapping

References

[1] ZHANG Hao, KANG Yili, YOU Lijun, GAO Bo. PRACTICES AND COUNTERMEASURES FOR EXPLORATION AND EXPLOITATION OF TIGHT SANDSTONE GAS RESERVOIRS IN CIHNA, presented at World Petroleum Congress 1st Youth Forum, Oct 17~23, (2004).

[2] Kewen Li. and Horne, R.N. Scaling of Spontaneous Imbibition in Gas-Liquid Systems, SPE 75167, presented at the SPE/DOE Thirteenth Symposium on Improved Oil Recovery held in Tulsa, Oklahoma, April 13–17, (2002).

[3] Kewen Li. and Horne, R.N. Characterization of Spontaneous Water Imbibition into Gas-Saturated Rocks[J], SPEJ (December 2001), 6(4), 375.

[4] Guo-Qing Tang, Abbas Firoozabadi, Relative Permeability Modification in Gas/Liquid Systems Through . Wettability Alteration to Intermediate Gas-Wetting. SPE81195, presented at SPE Reservoir Evaluation & Engineering, Vol 5, Number 6, December 427-436, (2002).

DOI: 10.2118/81195-pa

[5] M. Fahes, Imperial C., and A. Firoozabadi. Wettability Alteration to Intermediate Gas-Wetting in Gas Condensate Reservoirs at High Temperatures. SPE96184, presented at the 2005 SPE Annual Technical Conference and Exhibition held in Dallas, Texas, U.S.A., 9 – 12 October (2005).

DOI: 10.2118/96184-ms

[6] Rangel-Germán, E.R. , Kovscek, A.R. ，Experimental and Analytical Study of Multidimensional Imbibition in Fractured Porous Media, Journal of Petroleum Science and Engineering (2002) 36, 45-60.

DOI: 10.1016/s0920-4105(02)00250-4

[7] Dimo Kashchiev, Firoozabadi, A. Analytical Solutions for 1D Countercurrent Imbibition in Water-Wet Media. SPE87333, SPEJ December 2000, 401-408.

DOI: 10.2118/87333-pa

[8] G. Penuela, F. Civan, R.G. Hughes, M.L. Wiggins , Time-Dependent Shape Factors for Interporosity Flow in Naturally Fractured Gas-Condensate Reservoirs，SPE75524, SPE Gas Technology Symposium, 30 April-2 May 2002, Calgary, Alberta, Canada.

DOI: 10.2118/75524-ms