威远区块复合压裂液体系性能评价与应用
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摘要
页岩气开发技术发展迅速,页岩气压裂返排液重复利用回注,可以有效节约水资源,减少对环境危害,威远区块利用返排液加砂压裂,同时为了提高加砂强度,对压裂液提出了更高要求,通过室内研究,采用抗盐降阻剂+线性胶压裂液体系,满足返排液高矿化度同时提高液体粘度,可以降低连续或者长段塞加砂过程陶粒沉降速度,降低砂堵风险,应用表明:该体系能适应威远区块矿化度13 788 mg/L的返排液,现场加砂强度达到2～3 t/m,该体系已在威远区块推广应用。
Shale gas development technology development is rapid, reuse of shale gas fracturing drainage can effectively save the water resources,reduce the harm to the environment.In Weiyuan blocks sand fracturing drainage, at the same time, in order to increase the adding amount of sand higher requirements for fracturing fluid is put forward, through indoor research, salt resistant drag reduction agent + linear gum fracturing fluid system is adopted to satisfy the high drainage salinity, at the same time, to improve the liquid viscosity, which can reduce the speed of ceramsite sedimentation in the process of continuous or long slug sand adding, so as to reduce the risk of sand plug. This application shows that: The system can adapt to the drainage of 13788 mg/L of mineralization in weiyuan block,and the intensity of sand adding in the field reaches 2-3 tons/m. The system has been popularized and applied in weiyuan block.
Shale gas development technology development is rapid, reuse of shale gas fracturing drainage can effectively save the water resources,reduce the harm to the environment.In Weiyuan blocks sand fracturing drainage, at the same time, in order to increase the adding amount of sand higher requirements for fracturing fluid is put forward, through indoor research, salt resistant drag reduction agent + linear gum fracturing fluid system is adopted to satisfy the high drainage salinity, at the same time, to improve the liquid viscosity, which can reduce the speed of ceramsite sedimentation in the process of continuous or long slug sand adding, so as to reduce the risk of sand plug. This application shows that: The system can adapt to the drainage of 13788 mg/L of mineralization in weiyuan block,and the intensity of sand adding in the field reaches 2-3 tons/m. The system has been popularized and applied in weiyuan block.
引文
[1]贾长贵.页岩气高效变黏滑溜水压裂液[J].油气田地面工程,2013,32(11):1-2.
[2]魏娟明,刘建坤,杜凯,等.反相乳液型减阻剂及滑溜水体系的研发与应用[J].石油钻探技术,2015,1(43):27-32.
[3]何启平,尹丛彬,李嘉,等.威远-长宁地区页岩气压裂返排液回用技术研究与应用[J].钻采工艺,2016,39(1):118-121.
[4]战永平,付春丽,曲占庆,等.滑溜水摩阻影响因素实验研究[J].新疆石油天然气,2017,13(1):49-53.
[5]杨德敏,夏宏,袁建梅,等.页岩气压裂返排废水处理方法探讨[J].环境工程,2013,3(6):31-36.
[6]周德华,焦方正,贾长贵,等.JY1HF页岩气水平井大型分段压裂技术[J].石油钻探技术,2014,42(1):75-80.
[7]温庆志,高金剑,刘华,刘欣佳,等.滑溜水携砂性能动态实验[J].石油钻采工艺,2015,37(2):97-100.
[8]温庆志,胡蓝霄,翟恒立,等.滑溜水压裂裂缝内砂堤形成规律[J].特种油气藏,2013,20(3):137-139.
[2]魏娟明,刘建坤,杜凯,等.反相乳液型减阻剂及滑溜水体系的研发与应用[J].石油钻探技术,2015,1(43):27-32.
[3]何启平,尹丛彬,李嘉,等.威远-长宁地区页岩气压裂返排液回用技术研究与应用[J].钻采工艺,2016,39(1):118-121.
[4]战永平,付春丽,曲占庆,等.滑溜水摩阻影响因素实验研究[J].新疆石油天然气,2017,13(1):49-53.
[5]杨德敏,夏宏,袁建梅,等.页岩气压裂返排废水处理方法探讨[J].环境工程,2013,3(6):31-36.
[6]周德华,焦方正,贾长贵,等.JY1HF页岩气水平井大型分段压裂技术[J].石油钻探技术,2014,42(1):75-80.
[7]温庆志,高金剑,刘华,刘欣佳,等.滑溜水携砂性能动态实验[J].石油钻采工艺,2015,37(2):97-100.
[8]温庆志,胡蓝霄,翟恒立,等.滑溜水压裂裂缝内砂堤形成规律[J].特种油气藏,2013,20(3):137-139.