article

Experimental Study on Amphiphobic Surface Treating to Prevent Reservoir from Aqueous Phase Trapping Damage

Expand
  • (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu 610500, China)

Received date: 2008-11-10

  Revised date: 2009-03-01

  Online published: 2009-04-10

Abstract

The traditional shielding temporary plugging technique can not effectively prevent the operating fluid from invading into tight reservoirs, while the effect of draining by decreasing the interface tension is always transient. Adding fluorochemical surfactant into operating fluid can increase the contact angle, which is a new way to reduce the capillary force and capillary imbibition. Wetting test was conducted to select the right fluorochemical surfactant which can change the reservoir wettability from liquid wetting to gas wetting. Slabbed core was soaked in the filtrate involving the selected surfactant at 100℃ for 40 minutes. The contact angle of filtrate and water on the treated slabbed core was 120° and 110°, respectively. Imbibition and core flow test showed that, compared with the untreated, water absorption decreased by 60%, imbibition rate decreased by 40%~50% and the displacement velocity increased by 2 factors. The results show that fluorochemical surfactant can alter the wettability of reservoir effectively, which has the potential for application in the prevention of water phase trapping.

Cite this article

LIU Xue-Fen, KANG Yi-Li, YOU Li-Jun, WU Ping . Experimental Study on Amphiphobic Surface Treating to Prevent Reservoir from Aqueous Phase Trapping Damage[J]. Natural Gas Geoscience, 2009 , 20(2) : 292 -296 . DOI: 10.11764/j.issn.1672-1926.2009.02.292

References

[1] 游利军,康毅力,陈一健,等.致密砂岩含水饱和度建立新方法——毛管自吸法[J].西南石油学院学报,2005,27(1):28-31.
 [2] 张凤东,康毅力,杨 宇,等.致密气藏开发过程水相圈闭损害机理及防治研究进展[J].天然气地球科学,2007,18(3):457-463.[3] 贺承祖,华明琪.水锁效应研究[J].钻井液与完井液,1996,13(6):13-15.
 [4] 张振华,鄢捷年,吴艳梅.低渗透砂岩储层水锁损害的灰色神经网络预测模型[J].钻采工艺,2001,24(1):38-40.
 [5] 张振华,鄢捷年.用灰交联分析法预测低渗砂岩储层的水锁损害[J].钻井液与完井液,2002,19(2):1-5.
 [6] 廖锐全,徐永高,胡雪滨.水锁效应对低渗透储层的损害及抑制和解除方法[J].天然气工业,2002,22(6):87-89.
 [7] 李淑白,樊世忠,李茂成.水锁损害定量预测研究[J].钻井液与完井液,2002,19(5):8-9,12.
 [8] 张浩,康毅力,陈一健,等.致密砂岩气藏超低含水饱和度形成地质过程及实验模拟研究[J].天然气地球科学,2005,16(2):186-189.
 [9] 游利军,康毅力,陈一健,等.油气藏水相圈闭损害预测新方法——相圈闭系数法[J].钻井液与完井液,2007,24(4):60-762.
[10] Li K,Firoozabadi A.Experimental study of wettability alteration to preferential gas-wetting in porous media and its effects[J].SPE Reservoir Evaluation and Engineering,2000,3(2):139-149.
[11] Tang G,Firoozabadi A.Relative permeability modification in gas/liquid systems through wettability alteration to intermediate gas wetting[J].SPE Reservoir Evaluation & Engineering,2002,5(6):427-436.
[12] Fahes M,Firoozabadi A.Wettability Alteration to Intermediat Gas/Condensate Reservoirs at High Temperatures[C].SPE 96184.presented at the 2005 SPE Annual Technical Conference and Exhibition held in Dallas,TX,October 9-12,2005.
[13] Panga M K R,Ooi Y S,Koh P L,et al.Wettability Alteration for Water Block Prevention in High Temperature Gas Wells[C].SPE 100182.presented at the SPE Europec/EAGE Annual Conference and Exhibition held in Vienna,Austria,June12-15,2006.
[14] Liu Y,Zheng H,Huang G.Improving Production in Gas/Condensate Reservoirs by Wettability Alteration to Gas Wetness[C].SPE 99739.presented at the 2006 SPE/DOE Symposium on Improved Oil Recovery held in Tulsa,OK,April 22-26,2006.
[15] Hamond A A,Xiao J J,Ahmed A A,et al.Gas Productivity Enhancement by Wettability Alteration of Gas-Condensate Reservoirs[C].SPE 107493.presented at the European Formation Damage Conference held in Scheveningen,The Netherlands ,30 May-1 June,2007.
[16] Liu Yijiang,Zheng Hongwen,Li Kewen,et al.Production Enhancement in Gas-Condensate Reserboirs by Altering Wettability to Gas Wetness:Field Application[C].SPE 112750.presented at the 2008 SPE/DOE Improved Oil Recovery Symposium Held in Tulsa,U S A,19-23 April 2008.
[17] 吴非,狄勤丰,顾春元,等.疏水纳米SiO2降低岩心流动阻力效果的室内实验研究[J].钻采工艺,2008,31(2):102-103,112.

Outlines

/