低压井平衡式Y211型封隔器卡封完井管柱研究与应用
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摘要
Y211型封隔器因其结构简单、操作方便、承压高、中途不易坐封等特点,已广泛应用于油气田压裂、完井作业。但随着油田开发时间的不断延长,主力生产层压力系数不断下降、补层压裂不断增多,由层间压差大造成封隔器解封风险增大的问题日益突出,迫切需要对封隔器进行完善,以解决层间压差大时难以解封的问题,降低解封风险。研制了一种带泄压平衡通道的机械式封隔器,用于解决现有封隔器新老层间压差大造成封隔器解封力大、解封困难的问题。
The Y211 packer has been widely used in fracturing and completion of oil and gas fields by its simple structure,easy operation,high pressure resistance and its difficulty to set in the way.With the continuous extension of oilfield development time,the pressure coefficient of main production zones decreases while the fracturing of supplementary zones increases.The problem of increasing risk of packer unloading caused by large interlayer pressure difference is becoming more and more obvious.It is urgent to improve the design of packer to solve the problem of difficult unloading when the interlayer pressure difference is large and reduce the risk of unloading.A mechanical packer with pressure relief balancing passage was developed to solve the problem of large pressure difference between old and new layers of existing packers,large unloading force and difficulty of unloading of packers.
The Y211 packer has been widely used in fracturing and completion of oil and gas fields by its simple structure,easy operation,high pressure resistance and its difficulty to set in the way.With the continuous extension of oilfield development time,the pressure coefficient of main production zones decreases while the fracturing of supplementary zones increases.The problem of increasing risk of packer unloading caused by large interlayer pressure difference is becoming more and more obvious.It is urgent to improve the design of packer to solve the problem of difficult unloading when the interlayer pressure difference is large and reduce the risk of unloading.A mechanical packer with pressure relief balancing passage was developed to solve the problem of large pressure difference between old and new layers of existing packers,large unloading force and difficulty of unloading of packers.
引文
[1]张广瑞.机械堵水工艺管柱研究[D].大庆:东北石油大学,2015.
[2]张颖.机械式封隔器上压重与井口下放悬重关系研究[J].石油机械,2014,42(9):77-80.
[3]张立新.我国封隔器技术的发展与应用[J].石油机械,2007,35(8):58-60.
[4]王守芳,刘猛,周普清,等.上提加压式封隔器坐封高度的确定[J].油气井测试,2002,11(4):40-43.
[5]周先军,平利,季公明,等.封隔器胶筒接触应力分布有限元计算[J].钻采工艺,2002,25(4):51-52.
[6]Mitchell R F.Tubing buckling---The state of the art[R].SPE 104267,2006.
[7]江汉石油学院.封隔器理论基础与应用[M].北京:石油工业出版社,1983.
[8]Lubinski A,Althouse W S,Logan J L.Helical buckling of tubing sealed in packers[J].JPT,1962,14(6):655-670.
[9]LIANG Y N,YUE Q F,ZHANG Z H,et al.Horizontal well sectional frac technique with dual-retrievable packers in Daqing oilfield[R].SPE 119071,2009.
[10]王金友,许国文,李琳,等.连续油管拖动底封水力喷射环空加砂分段压裂技术[J].石油矿场机械,2016,45(5):69-72.
[11]杨魁.同井注采封隔器设计及管柱力学分析[D].青岛:中国石油大学(华东),2011.
[12]周俊然,王益山,郭贤伟,等.组合式滑套分段压裂管柱研究及现场应用[J].石油钻采工艺,2016,38(4):483-486.
[13]丁宇奇,兰乘宇,刘巨保,等.分层压裂管柱冲蚀特性数值模拟与试验分析[J].石油钻采工艺,2017,39(2):231-236.
[2]张颖.机械式封隔器上压重与井口下放悬重关系研究[J].石油机械,2014,42(9):77-80.
[3]张立新.我国封隔器技术的发展与应用[J].石油机械,2007,35(8):58-60.
[4]王守芳,刘猛,周普清,等.上提加压式封隔器坐封高度的确定[J].油气井测试,2002,11(4):40-43.
[5]周先军,平利,季公明,等.封隔器胶筒接触应力分布有限元计算[J].钻采工艺,2002,25(4):51-52.
[6]Mitchell R F.Tubing buckling---The state of the art[R].SPE 104267,2006.
[7]江汉石油学院.封隔器理论基础与应用[M].北京:石油工业出版社,1983.
[8]Lubinski A,Althouse W S,Logan J L.Helical buckling of tubing sealed in packers[J].JPT,1962,14(6):655-670.
[9]LIANG Y N,YUE Q F,ZHANG Z H,et al.Horizontal well sectional frac technique with dual-retrievable packers in Daqing oilfield[R].SPE 119071,2009.
[10]王金友,许国文,李琳,等.连续油管拖动底封水力喷射环空加砂分段压裂技术[J].石油矿场机械,2016,45(5):69-72.
[11]杨魁.同井注采封隔器设计及管柱力学分析[D].青岛:中国石油大学(华东),2011.
[12]周俊然,王益山,郭贤伟,等.组合式滑套分段压裂管柱研究及现场应用[J].石油钻采工艺,2016,38(4):483-486.
[13]丁宇奇,兰乘宇,刘巨保,等.分层压裂管柱冲蚀特性数值模拟与试验分析[J].石油钻采工艺,2017,39(2):231-236.
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