抽油机井不压井防喷管柱的研究与应用
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摘要
为了解决大泵抽油机井检泵作业时井内丢手开关密封不严、井内溢流无法控制及不压井无法施工等问题,研制了不压井防喷管柱。管柱主要由封隔器、锚定卡瓦、捅杆和控液开关等组成。管柱中的封隔器通过锚定卡瓦锚定管柱后压油管释放封隔器密封油套环空,控液开关和捅杆配合,通过控液开关里的防喷浮子控制套管出液。二次作业时,捅杆提出控液开关后,控液开关关闭,实现井内无溢流作业。该管柱现场应用15口井,封隔器坐封、丢手均一次性成功,控液开关防喷浮子关闭自如,且能长期使用。现场应用结果表明:不压井防喷管柱节约了作业费用,缩短了施工井的占井周期,保护了油气层,具有良好的应用前景。
To address the problems of pump inspection operation in pumping well produced by large pumping unit,including unsealed release switch,uncontrollable overflow,and failure of operation without killing the well,the blowout preventing string and supporting tools for snubbing operation run with the completion string are studied. The string is mainly composed of a packer,an anchor slip,a switch rod and a liquid control switch. After the anchor slip anchors the casing,the packer is hydraulically set to isolate the tubing-casing annular. The liquid control switch combined with the switch rod controls the producing liquid by blowout preventing float. During workover,the switch rod is pulled out of the liquid control switch to shut down the producing to provide non-flowing downhole condition. The string has been applied in 15 wells with one-time packer setting and releasing. The liquid-control switch blowout preventing float could be smoothly switched for a long time. The field application showed that the developed string saved operating costs,shortened the operation time and protected the formation,presenting a good application prospect.
To address the problems of pump inspection operation in pumping well produced by large pumping unit,including unsealed release switch,uncontrollable overflow,and failure of operation without killing the well,the blowout preventing string and supporting tools for snubbing operation run with the completion string are studied. The string is mainly composed of a packer,an anchor slip,a switch rod and a liquid control switch. After the anchor slip anchors the casing,the packer is hydraulically set to isolate the tubing-casing annular. The liquid control switch combined with the switch rod controls the producing liquid by blowout preventing float. During workover,the switch rod is pulled out of the liquid control switch to shut down the producing to provide non-flowing downhole condition. The string has been applied in 15 wells with one-time packer setting and releasing. The liquid-control switch blowout preventing float could be smoothly switched for a long time. The field application showed that the developed string saved operating costs,shortened the operation time and protected the formation,presenting a good application prospect.
引文
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[9]王志贤.抽油杆扶正器打捞筒在定向抽油机井中的应用[C]∥采油工程文集.北京:石油工业出版社,2016:70-73.WANG Z X.Application of fishing collar for sucker rod centralizer in directional pumping well[C]∥Proceedings of the Oil Production Engineering Collection.Beijing:Petroleum Industry Press,2016:70-73.
[2]罗英俊,万仁溥.采油技术手册[M].3版.北京:石油工业出版社,2005:105-109.LUO Y J,WAN R P.Handbook of petroleum production[M].3rd ed.Beijing:Petroleum Industry Press,2005:105-109.
[3]肖国华,马宝忠,王金忠,等.JDY441可取式卡瓦封隔器的研制与应用[J].石油机械,2013,41(12):118-120.XIAO G H,MA B Z,WANG J Z,et al.Development and application of the JDY441 retrievable slip-type packer[J].China Petroleum Machinery,2013,41(12):118-120.
[4]巨亚锋,罗必林,刘保彻,等.大斜度井可洗井注水封隔器的研制与应用[J].石油机械,2011,39(8):41-43.JU Y F,LUO B L,LIU B C,et al.The development and application of the packer for well flushing and water injection in highly deviated wells[J].China Petroleum Machinery,2011,39(8):41-43.
[5]游兴友,高飞,孟庆民,等.防顶锚定器的研制与应用[J].石油机械,2003,31(5):33-35.YOU X Y,GAO F,MENG Q M,et al.Development and application of up-running-proof anchor[J].China Petroleum Machinery,2003,31(5):33-35.
[6]贺亚维,宋显民.分流沉积的井下进液器及其在措施管柱中的应用[J].石油钻采工艺,2013,35(4):114-116.HE Y W,SONG X M.Distributary deposit down-hole liquid inlet device and its application in measuring string[J].Oil Drilling&Production Technology,2013,35(4):114-116.
[7]王磊,吴捷,郑伟,等.Y445-114插管封隔器的研制与应用[J].石油机械,2013,41(7):82-84.WANG L,WU J,ZHENG W,et al.Development and application of the Y445-114 bayonet-tube packer[J].China Petroleum Machinery,2013,41(7):82-84.
[8]陈冠良,王飞,程艳会,等.高效洗井防污染管柱的研究与设计[J].石油机械,2006,34(4):28-29.CHEN G L,WANG F,CHENG Y H,et al.Research and design of tubing strings for well flushing and formation damage prevention[J].China Petroleum Machinery,2006,34(4):28-29.
[9]王志贤.抽油杆扶正器打捞筒在定向抽油机井中的应用[C]∥采油工程文集.北京:石油工业出版社,2016:70-73.WANG Z X.Application of fishing collar for sucker rod centralizer in directional pumping well[C]∥Proceedings of the Oil Production Engineering Collection.Beijing:Petroleum Industry Press,2016:70-73.