| 摘要: |
| 工厂化”作业是页岩气藏效益开发的必然要求,针对“工厂化”作业的要求,形成了可满足“工厂化”作业的滑溜水配方。采用低相对分子质量、低黏乳液降阻剂,降阻率73%～78%,溶解时间小于30 s,满足高排量、连续混配要求；采用高效杀菌剂,对硫酸盐还原菌杀菌率达100%,有效地降低了细菌对储层和生产设备的伤害,返排液经简单沉降后可重复使用。CNH3井组“工厂化”作业现场试验表明,滑溜水降阻率76.2%～78.7%,返排率12.16%～14.30%,累计增加井口测试产量20.95×104 m3/d。 |
| 关键词: 页岩 工厂化 滑溜水 井组 体积压裂 |
| DOI：10.3969/j.issn.1007-3426.2015.04.014 |
| 分类号:TE357.2 |
| 基金项目:国家重点基础研究发展计划(973计划)“南方海相典型区块页岩气开发理论与技术”(2013CB228006)。 |
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| Technology research of the fracturing fluid for shale gas reservoir as “factory” fracturing:An example of the CNH3 well group “factory” fracturing |
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Liu Youquan1,Chen Pengfei1,Wu Wengang1,Zhang Qian1, Zhang Yadong1, Xiebing2, Long Shunmin1
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(1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu 610213, China;2.Chongqing University of Science and Technology, Chongqing 401331, China)
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| Abstract: |
| Factory” fracturing is the necessary requirement of benefit development in shale gas reservoir, according to the “factory” fracturing requirement, forming a slick water formulation which could meet the request of “factory” fracturing:low molecular weight, low viscosity emulsion friction reducing agent, friction reducing rate is 73%-78%, the dissolution time is less than 30 s, it could meet the high displacement, continuous mixing requirement; and using efficient bactericide, bactericidal rate of sulphate reducing bacteria is 100%, it could effectively reduce the damage to reservoir and production equipment; flowback fluid can be used repeatedly after simple treatment. CNH3 well group field test showed that the friction reduction rate is from 76.2% to 78.7% of slick water; the flowback rate is from 12.16% to 14.30%, the cumulative test production reached 20.95× 104 m3/d. |
| Key words: shale factory slick water well group volume fracturing |
