海上油田注水井分注管柱密封模块失效及对策研究
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摘要
随着渤海油田"注水年"工作的逐步推进,部分老井或多次修井后的注水管柱插入密封对应的密封筒密封失效,不能真正的实现分层注水的目的,甚至会出现油套同压的风险。分析了防砂管柱中插入密封的密封筒失效情况,提出了在不需动外层管柱的提前下,运用压力膨胀式插入密封解决了密封筒失效的问题。针对大井斜且注水层段较长或是层间矛盾较为突出的井况,应该从分注工艺上研究解决,而电缆永置式智能测调技术恰能解决该难题,其不受大井斜因素的限制外,省去了多趟钢丝作业的工序,可实时同步对井下各个层段的配水器芯子开度进行调节,满足不同层位的配注要求。现场实践表明,针对密封筒失效后采用压力膨胀式插入密封或改变注水工艺,均能实现分层配注的目的,具有良好的应用价值。
The sealing performance of the sealing tube in some old wells or multiple workover wells normally cannot achieve the purpose of layered water injection,or even with the risk of oil jacket pressure.The failure condition of the sealing cylinder in the sand control pipe column was analyzed and the pressure expansion joint sealing was recommended to solve the failure of the sealing cylinder without the outer pipe column.For the well conditions with large wells and long water injection intervals or prominent inter-layer conflicts,the dispensing process should be focused.The cable permanent-type intelligent measurement and control technology can solve this problem without limitation from the factors of the large well deviation.It saves the multi-twisting steel wire operation and synchronizes the opening degree of the water distributor core in each layer of the underground well.The field application shows that the pressure expansion type insert sealing or changing water injection operation after failure of the sealing cylinder can achieve the purpose of layered dispensing.
The sealing performance of the sealing tube in some old wells or multiple workover wells normally cannot achieve the purpose of layered water injection,or even with the risk of oil jacket pressure.The failure condition of the sealing cylinder in the sand control pipe column was analyzed and the pressure expansion joint sealing was recommended to solve the failure of the sealing cylinder without the outer pipe column.For the well conditions with large wells and long water injection intervals or prominent inter-layer conflicts,the dispensing process should be focused.The cable permanent-type intelligent measurement and control technology can solve this problem without limitation from the factors of the large well deviation.It saves the multi-twisting steel wire operation and synchronizes the opening degree of the water distributor core in each layer of the underground well.The field application shows that the pressure expansion type insert sealing or changing water injection operation after failure of the sealing cylinder can achieve the purpose of layered dispensing.
引文
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[11]吉洋,刘敏,王立苹,等.海上油田分层注水反洗井技术研究与应用[J].中国海上油气,2015,27(2):87-92.
[12]刘常清,王现锋,张磊,等.渤海油田水平注水井两层分注工艺研究及应用[J].石油矿场机械,2016,45(9):83-86.
[13]高永华,陈钦伟,刘华伟,等.海上油田分层开采压力膨胀式插入密封技术[J].石油钻采工艺,2018,40(2):205-209.
[2]吴奇,海上油田防砂完井注水井插入式多水嘴集成分层注入工艺技术[C]//注水技术研讨会论文集.北京:中国石化出版社,2005.
[3]李明,王治国,朱雷,等.桥式偏心分层注水技术现场试验研究[J].石油矿场机械,2010,39(10):66-70.
[4]赵贵金,毕愿涛,王超,等.水平井井下分注工艺管柱的研究与应用[J].石油机械,2011,39(8):53-56.
[5]姜广彬,刘艳霞,聂文龙,等.海上双管注水双控安全阀研制与应用[J].石油矿场机械,2012,41(11):69-72.
[6]罗昌华,程心平,刘敏,等.海上油田同心边测边调分层注水管柱研究及应用[J].中国海上油气,2013,25(4):46-48.
[7]朱骏蒙,赵霞,穆停华,等.海上液控分层注水一体化工艺技术优化应用[J].石油矿场机械,2015,44(9):72-75.
[8]程心平,马成晔,张成富,等.海上油田同心多管分注技术的开发与应用[J].中国海上油气,2008,20(6):402-403.
[9]杨万有,王立苹,张凤辉,等.海上油田分层注水井电缆永置智能测调新技术[J].中国海上油气,2015,27(3):91-95.
[10]邹皓,罗懿.斜井小排量油套分注工艺技术研究及应用[J].石油机械,2004,32(8):7-9.
[11]吉洋,刘敏,王立苹,等.海上油田分层注水反洗井技术研究与应用[J].中国海上油气,2015,27(2):87-92.
[12]刘常清,王现锋,张磊,等.渤海油田水平注水井两层分注工艺研究及应用[J].石油矿场机械,2016,45(9):83-86.
[13]高永华,陈钦伟,刘华伟,等.海上油田分层开采压力膨胀式插入密封技术[J].石油钻采工艺,2018,40(2):205-209.