氮气泡沫压裂液用作煤层气井性能研究  

Properties of nitrogen foam fracturing fluid for CBM wells

作　　者：程秋菊[1,2] 胡艾国[1,2] 熊佩[2] 罗陶涛 李国锋[2] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]中石化华北分公司工程技术研究院,河南郑州450006 [3]川庆钻探工程公司钻采工艺技术研究院,四川广汉618300

出　　处：《应用化工》2011年第10期1675-1679,共5页Applied Chemical Industry

基　　金：十二五国家科技重大专项研究内容(2011ZX05060-002)

摘　　要：通过对氮气泡沫压裂液的筛选,优选出适合于煤层的泡沫压裂液体系,性能测定表明,0.25%SL-1+0.25%SL-2+0.5%ABS+0.2%PAM泡沫体系经145 s-1剪切后粘度仍稳定在100 mPa.s,滤失系数为1.54×10-5 m/min1/2,陶粒沉降速度仅为清水的0.004 5%,对煤样的损害率只有20.8%(相对于瓜胶的79.4%),远小于常规压裂液,其吸附量对煤基质的孔隙基本不会产生堵塞,由此可见,0.25%SL-1+0.25%SL-2+0.5%ABS+0.2%PAM体系泡沫压裂液非常适合煤层气井的压裂施工。Foam fracturing fluid system for coal was optimized.By measuring the performance of nitrogen foam fracturing fluid,the results showed that：the viscosity of 0.25%SL-1＋0.25%SL-2＋0.5%ABS＋0.2%PAM system remained stable at 50 mPa · s after shear at the rate of 145 s-1,filtration coefficient was only 1.54×10-5 m/min1/2,settling velocity of ceramic was accounted 0.004 5% of water.The damage rate to the coal of foam system was only 20.8%（compared to 79.4% of guar gum）,the damage of foam system was far less than for conventional fracturing fluid.The foam fracturing fluid will not block the coal porosity.Thus,0.25%SL-1＋0.25%SL-2＋0.5%ABS＋ 0.2%PAM system was suitable fracturing system for coalbed methane wells.

关 键 词：煤层 泡沫压裂液 性能评价 伤害性 

分 类 号：TQ016[化学工程] TE357[石油与天然气工程—油气田开发工程]