清洁压裂液返排液配制强抑制性钻井液研究
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摘要
压裂返排液液量大,易造成环境污染,其处理难度大,处理成本高。针对此问题,研究利用清洁压裂液返排液配制钻井液的工艺。通过正交实验、极差分析、单因素实验,优选出所配制的钻井液各项性能最佳的相应条件。线性膨胀率实验和泥球实验表明,清洁压裂液返排液配制的钻井液及其上清液都对膨润土的水化膨胀有较强的抑制作用,抑制性优于4%KCl溶液。
According to the problems of large liquid volume,difficult treatment,high processing cost,and environmental pollution on flowback-fluid of clean fracturing,it is proposed a process of clean fracturing flowback-fluid reusing for preparing drilling fluid. The corresponding conditions of optimum performance of prepared drilling fluid were screened by orthogonal designed experiment,range analysis,and single-factor experiment. From linear bentonite swelling experiment and mud ball experiment,the results indicate that the drilling fluid prepared by the backflow-liquid of clean fracturing and its supernatant have a good inhibitory effect on the hydration expansion of clay,and the inhibition capability is better than that of 4% KCl solution.
According to the problems of large liquid volume,difficult treatment,high processing cost,and environmental pollution on flowback-fluid of clean fracturing,it is proposed a process of clean fracturing flowback-fluid reusing for preparing drilling fluid. The corresponding conditions of optimum performance of prepared drilling fluid were screened by orthogonal designed experiment,range analysis,and single-factor experiment. From linear bentonite swelling experiment and mud ball experiment,the results indicate that the drilling fluid prepared by the backflow-liquid of clean fracturing and its supernatant have a good inhibitory effect on the hydration expansion of clay,and the inhibition capability is better than that of 4% KCl solution.
引文
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[14]高起龙,马丰云,张建甲,等.香蕉皮制备绿色钻井液处理剂的作用效能研究[J].化工技术与开发,2013,42(11):5-9.
[15]张洁,张云月,陈刚.树胶的交联改性及其作为钻井液处理剂的研究[J].石油钻采工艺,2011,33(6):37-40.
[16]张洁,张强,陈刚,等.强抑制性改性杂聚糖在钻井液中的作用效能与机理研究[J].化工技术与开发,2013,42(10):1-5.
[17]石油钻井工程专业标准化委员会.SY/T 6335-1997.钻井液用页岩抑制剂评价方法[S].北京:石油工业出版社,1998.
[18]蔡丹.油田用小分子抑制剂的合成[D].西安:西安石油大学,2014..
[2]许江文,胡广军,凌立苏,等.清洁压裂液技术在石南油田储层改造中的应用[J].油气井测试,2004,13(5):52-54.
[3]刘通义,陈江明,赵众从,等.BCG-1深井加重清洁压裂液体系[J].钻井液与完井液,2016,33(2):122-126.
[4]何静,王满学,赵逸,等.适合特低渗透油田的VES清洁压裂液性能[J].钻井液与完井液,2012,29(1):79-81.
[5]崔会杰,李建平,王立中,等.清洁压裂液室内研究[J].钻井液与完井液,2005,22(3):41-43.
[6]杨振周,周广才,卢拥军,等.粘弹性清洁压裂液的作用机理和现场应用[J].钻井液与完井液,2005,22(1):48-50.
[7]MALHOTRA S,SHARMA M M.A general correlation for proppant settling in VES fluids[R].SPE 139581,2011.
[8]FONTANA C,MURUAGA E,PEREZ D,et al.Successful application of a high temperature viscoelastic surfactant(VES)fracturing fluids under extreme conditions in patagonian wells San Jorge Basin[R].SPE 107277,2007.
[9]SAMUEL M M,CARD R J,NELSON E B,et al.Polymer-free fluid for fracturing applications[J].SPE Drilling&Completion,1999,14(4):240-246.
[10]戴鲲.粘弹性表面活性剂压裂液研究与应用[D].吉林:吉林大学,2008.
[11]祝成.清洁压裂液的配制及性能研究[D].成都:西南石油大学,2010.
[12]杨衍东,胡永金,赵金洲.压裂液的环保问题初探[J].西部探矿工程,2006(4):88-90.
[13]马云,何顺安,侯亚龙,等.油田废压裂液的危害及其处理技术研究进展[J].石油化工应用,2009,28(8):1-3.
[14]高起龙,马丰云,张建甲,等.香蕉皮制备绿色钻井液处理剂的作用效能研究[J].化工技术与开发,2013,42(11):5-9.
[15]张洁,张云月,陈刚.树胶的交联改性及其作为钻井液处理剂的研究[J].石油钻采工艺,2011,33(6):37-40.
[16]张洁,张强,陈刚,等.强抑制性改性杂聚糖在钻井液中的作用效能与机理研究[J].化工技术与开发,2013,42(10):1-5.
[17]石油钻井工程专业标准化委员会.SY/T 6335-1997.钻井液用页岩抑制剂评价方法[S].北京:石油工业出版社,1998.
[18]蔡丹.油田用小分子抑制剂的合成[D].西安:西安石油大学,2014..