FHB-10复合表面活性剂对低渗油气藏水锁伤害的防治作用  

Prevention of Water-blocking Damage by Using Composite Surfactant FHB-10 in Low Permeability Reservoirs

作　　者：杨东兰[1] 刘洪升[1] 王培义[2] 王俊英[1] 孙庆阁[1] 张傲霜[1] 杨志伟[3] 

机构地区：[1]中石化中原油田分公司采油工程技术研究院,河南濮阳457001 [2]中石化石油勘探开发研究院,北京100083 [3]中石油长庆油田分公司油气工艺研究院低渗透油气田勘探开发国家工程实验室,陕西西安710021

出　　处：《石油天然气学报》2011年第6期139-142,10-11,共4页Journal of Oil and Gas Technology

基　　金：国家"863"计划项目(2006AA06Z226)

摘　　要：针对低渗砂岩油气藏储层特点,分析了水锁伤害的作用机理,并开展了水锁伤害防治技术的试验研究与现场应用等工作。经室内模拟试验证实:应用高活性FHB-10复合表面活性剂,能有效地抑制地层水锁伤害并具有显著的水锁伤害后地层渗透性恢复能力。其中抑制地层水锁伤害能力与2.0%KCl水溶液相比,可使水锁伤害降低率达到78%以上;治理水锁伤害的液体用量一般为孔隙体积的5倍左右,反应时间在16～24h,岩心水锁伤害后渗透性恢复率为90.4%。在中原油田文23气田9井次的压裂施工中,应用FHB-10复合表面活性剂抑制地层水锁伤害技术,平均单井增产天然气413.48×104 m3,累计增产天然气3721.3×104 m3;在1井次治理水锁伤害的施工中,日产天然气由处理前的0.20×104 m3上升到1.60×104 m3,日增天然气1.40×104 m3,累计增产天然气195.5×104 m3。In allusion to the performance of low permeability sand oil and gas reservoirs,water-locking damage mechanism and water-locking damage control technique were studied.The technique was applied in Zhongyuan Oilfield.The high active composite surfactant FHB-10 could effectively prevent water-blocking damage,FHB-10 presented the ability to restore formation permeability.It could reduce water-locking damage rate over 78% compared with 2.0% water solution.The liquid volume for processing water-locking damage was generally 5 times of pore volume.And the reaction time lasted 16 to 24 hours.The core permeability recovering rate was 90.4%.All these are confirmed by laboratory test.After fracturing operation of 9 times,the natural gas production increases by 413.48×104m3 per well,and accumulated gas production increases by 3721.3×104m3 in Wen 23 Gas Field of Zhongyuan-oilfield by using water-locking damage control technique.After one well controlling water-locking damage operation,the natural gas production increases from 0.20×104m3 to 1.60×104m3 per day.The natural gas production increases by 1.40×104m3 per day,and accumulated gas production increase by 195.5×104m3.

关 键 词：表面活性剂 水锁 地层伤害 毛细管阻力 表面张力 界面张力 

分 类 号：TE258[石油与天然气工程—油气井工程]