大庆油田修井工艺技术现状及发展方向
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摘要
大庆油田在开发20年后的1979年,出现了一百口故障井,随着油水井生产年限的增长,加上地质条件和工程因素的影响,套管损坏速度明显加快,出现了成片套损区,出现了三次套损高峰期。套损井的出现,破坏了注采关系的完整性,严重影响了油田正常生产。为此,从1980年开始,采油工程系统根据油田不同时期的套损形式,研发了适应5-1/2″套管的解卡打捞、整形加固、取换套、侧斜及水平井修井等修井技术,达到年修复2000口井以上的施工能力,修复率不断提高,治理了成片套损区,提高了油水井利用率,"十二五"以来,修复率保持在85%左右,平均年恢复产油量24.96×10~4t,年恢复注水量805.85×10~4 m~3,完善了注采关系,为油田生产开发起到了保驾护航的重要作用,"十三五"及以后大修技术将面临新矛盾,提出其应向疑难复杂套损井修井、水平井套管密封加固、环保修井、智能可视化修井等方向发展。
In 1979,20 years after the development of Daqing oilfield,there were 100 failed wells.With the increase of production life of oil wells and the influence of geological conditions and engineering factors,the casing damage speed was significantly accelerated,and there were many casing damage areas and three casing damage peaks.The appearance of casing damaged wells destroyed the integrity of injection-production relationship and seriously affected the normal production of oilfield.Therefore,starting from 1980,according to different periods of oilfield production engineering system of casing damage forms,developed to adapt to 5-1/2″ casing sticking-releasing salvage,plastic reinforcement and take in workover technology such as sets,skew and horizontal well workover,achieve the repair of more than 2000 wells in construction ability,repair rate rising,governance is a piece of casing damage area,improved the utilization rate of oil and water wells,"twelfth five-year"since the repair rates remain at around 85%,the average recovery oil produced 24.96×10~4 t,restore water injection 805.85×10~4 m~3,perfecting injection-production relationship.It plays an important role in protecting oilfield production and development,and the overhaul technology will face new contradictions in the 13 th five-year plan and the future.It is proposed that the overhaul technology should be developed in the direction of complex casing repair,horizontal casing sealing reinforcement,environmental protection workover,intelligent visual workover,etc.
In 1979,20 years after the development of Daqing oilfield,there were 100 failed wells.With the increase of production life of oil wells and the influence of geological conditions and engineering factors,the casing damage speed was significantly accelerated,and there were many casing damage areas and three casing damage peaks.The appearance of casing damaged wells destroyed the integrity of injection-production relationship and seriously affected the normal production of oilfield.Therefore,starting from 1980,according to different periods of oilfield production engineering system of casing damage forms,developed to adapt to 5-1/2″ casing sticking-releasing salvage,plastic reinforcement and take in workover technology such as sets,skew and horizontal well workover,achieve the repair of more than 2000 wells in construction ability,repair rate rising,governance is a piece of casing damage area,improved the utilization rate of oil and water wells,"twelfth five-year"since the repair rates remain at around 85%,the average recovery oil produced 24.96×10~4 t,restore water injection 805.85×10~4 m~3,perfecting injection-production relationship.It plays an important role in protecting oilfield production and development,and the overhaul technology will face new contradictions in the 13 th five-year plan and the future.It is proposed that the overhaul technology should be developed in the direction of complex casing repair,horizontal casing sealing reinforcement,environmental protection workover,intelligent visual workover,etc.
引文
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[10]王春梅,张宝晶.无通道套损井修复技术[J].企业导报,2015(18):173-174.
[11]曲兆峰,何秀清,张国良.大庆油田油层部位套损井取换套技术研究[J].大庆石油地质与开发,2007,26(5):84-86.
[12]焦震,谷洪文.套损井密封加固技术新进展[J].大庆石油地质与开发,2009,28(4):80-83.
[13]王海军.大庆油田侧斜修井工艺中侧斜方位设计的研究[J].内蒙古石油化工,2014(16):10-11.
[14]吴帮英,吴邦永.大庆油田各类套损井大修新技术[J].大庆石油地质与开发,2011,30(3):139-143.
[15]赵恩远,何秀清,谷洪文.徐深气田CO2深层气井修井方法[J].大庆石油地质与开发,2008,27(5):97-100.
[16]刘国军,王国强,岳野.套损井修复技术在大庆油田的应用[J].内蒙古石油化工,2014(22):119-121.
[2]杨民渝,郭军,徐艳.套损层位异常压力的形成及预测方法[J].大庆石油地质与开发,2001,20(6):37-38.
[3]周晓玲,郭雷,李自平,等.萨中开发区注聚区块套管损坏原因[J].大庆石油地质与开发,2002,21(4):44-45.
[4]陆蔚刚,石成方,张震,等.控制压力平衡是减缓套损趋势的有效途径[J].大庆石油地质与开发,2002,21(2):56-58.
[5]吴恩成,闫铁.大庆油田嫩二底标准层化石层引起套管损坏机理分析[J].大庆石油学院学报,2007,31(2):38-41.
[6]刘合,刘建东,卓胜广,等.大庆油田嫩二成片套损的地质控制因素[J].石油学报,2006(5):135-138.
[7]金岩松,刘合.几种高难套损井的套损形态及修井工艺[J].大庆石油地质与开发,2004,23(1):46-47.
[8]杨也,李京申,张昌福.爆炸修井技术综合研究[J].石油钻采工艺,1994,16(4):60-66.
[9]黄建鑫,邹红,张书进.大庆油田套损井打通道加固技术[J].大庆石油地质与开发,2002,26(5):46-47.
[10]王春梅,张宝晶.无通道套损井修复技术[J].企业导报,2015(18):173-174.
[11]曲兆峰,何秀清,张国良.大庆油田油层部位套损井取换套技术研究[J].大庆石油地质与开发,2007,26(5):84-86.
[12]焦震,谷洪文.套损井密封加固技术新进展[J].大庆石油地质与开发,2009,28(4):80-83.
[13]王海军.大庆油田侧斜修井工艺中侧斜方位设计的研究[J].内蒙古石油化工,2014(16):10-11.
[14]吴帮英,吴邦永.大庆油田各类套损井大修新技术[J].大庆石油地质与开发,2011,30(3):139-143.
[15]赵恩远,何秀清,谷洪文.徐深气田CO2深层气井修井方法[J].大庆石油地质与开发,2008,27(5):97-100.
[16]刘国军,王国强,岳野.套损井修复技术在大庆油田的应用[J].内蒙古石油化工,2014(22):119-121.