胜利海上油田安全可控长效分层注水技术
|
摘要
为满足胜利海上油田注水井分层注水管柱检修期长、安全、高效的要求,在分析影响分层注水管柱寿命因素的基础上,提出了采用平衡式分层注水管柱改善管柱受力,降低管柱蠕动幅度;采用液压控制方式解决分层和洗井之间的矛盾;研制液控式封隔器解决封隔器提前坐封和满足井控要求的技术思路。通过研制液控压缩式封隔器和液控式环空安全封隔器等关键工具,设计了平衡式分层注水管柱,形成了安全可控长效分层注水技术。液控压缩式封隔器采用液压控制方式始终将其控制在最佳压力状态,洗井时可快速解封,以解决反洗井造成的封隔器寿命不长的问题。液控式环空安全封隔器采用了双液压控制管线,设有安全锁紧机构,洗井和安全通道独立控制,既能满足大排量反洗井要求,又能提高注水管柱长期的安全可靠性。胜利海上油田分层注水井应用安全可控长效分层注水技术101井次,分层注水合格率提高16. 6%,注水管柱检修期最长达5年。安全可控长效分层注水技术不仅延长了胜利海上油田分层注水管柱的检修期,满足了安全高效注水的要求,也可以满足水驱开发油田精细分层注水的要求。
The Shengli offshore oilfield has a need for long-term,safe and efficient maintenance period for the stratified water injection string in water injection wells. After analyzing the factors affecting the life of the stratified water injection string,this paper proposes a balanced stratified injection string to improve the stress on the string and reduce the peristaltic deformation of the string. To this end,a liquid control method is used to stratify layers to solve the conflicts between layering and well washing. A liquid control packer has been developed to solve the problem of the packer seating in advance and to meet the requirements of well control safety. Through the development of liquid control compression packer and liquid control annulus safety packer key tools,one balanced stratified water injection string was developed,forming a safe and controllable long-term stratified water injection technology. Hydraulic control compression packer adopts hydraulic control method to constantly maintain the optimal pressure state. It can be quickly released during well washing to solve the problem of packer life reduction due to backwashing. Hydraulic control annulus safety packer adapts to a double hydraulic control pipeline,with safety locking mechanism,and thus well washing and safety can be controlled independently. It can not only meet the requirements of large displacement backwashing,but also improve the long-term safety and reliability of water injection string. The balanced stratified water injection string can improve the stress of the pipe string and reduce its creep amplitude. Safe and controllable long-term separated layer water injection technology was used in 101 wells in the Shengli offshore oilfield. The qualified rate of stratified water injection was increased by 16. 6%,and the longest maintenance period of water injection string was up to 5 years. Safe and controllable long-term stratified water injection technology not only extends the service life of separated layer water injection string in the Shengli offshore oilfield,but also meets the requirements of safe and efficient water injection. It also meets the requirements of fine stratified water injection in water flooding oilfield.
The Shengli offshore oilfield has a need for long-term,safe and efficient maintenance period for the stratified water injection string in water injection wells. After analyzing the factors affecting the life of the stratified water injection string,this paper proposes a balanced stratified injection string to improve the stress on the string and reduce the peristaltic deformation of the string. To this end,a liquid control method is used to stratify layers to solve the conflicts between layering and well washing. A liquid control packer has been developed to solve the problem of the packer seating in advance and to meet the requirements of well control safety. Through the development of liquid control compression packer and liquid control annulus safety packer key tools,one balanced stratified water injection string was developed,forming a safe and controllable long-term stratified water injection technology. Hydraulic control compression packer adopts hydraulic control method to constantly maintain the optimal pressure state. It can be quickly released during well washing to solve the problem of packer life reduction due to backwashing. Hydraulic control annulus safety packer adapts to a double hydraulic control pipeline,with safety locking mechanism,and thus well washing and safety can be controlled independently. It can not only meet the requirements of large displacement backwashing,but also improve the long-term safety and reliability of water injection string. The balanced stratified water injection string can improve the stress of the pipe string and reduce its creep amplitude. Safe and controllable long-term separated layer water injection technology was used in 101 wells in the Shengli offshore oilfield. The qualified rate of stratified water injection was increased by 16. 6%,and the longest maintenance period of water injection string was up to 5 years. Safe and controllable long-term stratified water injection technology not only extends the service life of separated layer water injection string in the Shengli offshore oilfield,but also meets the requirements of safe and efficient water injection. It also meets the requirements of fine stratified water injection in water flooding oilfield.
引文
[1]程心平,王良杰,薛德栋.渤海油田分层注水工艺技术现状与发展趋势[J].海洋石油,2015,35(2):61-65,81.CHENG Xinping,WANG Liangjie,XUE Dedong.Current situation and development tendency of separated water injection technology in Bohai offshore oilfield[J].Offshore Oil,2015,35(2):61-65,81.
[2]刘合,裴晓含,罗凯,等.中国油气田开发分层注水工艺技术现状与发展趋势[J].石油勘探与开发,2013,40(6):733-737.LIU He,PEI Xiaohan,LUO Kai,et al.Current status and trend of separated layer water flooding in China[J].Petroleum Exploration and Development,2013,40(6):733-737.
[3]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.ZHU Junmeng,ZHAO Xia,MU Tinghua,et al.Optimization and application of offshore hydraulic separate layer water injection integrated technology[J].Oil Field Equipment,2015,44(9):72-75.
[4]李建雄,户贵华,刘艳秋,等.分注管柱失效原因分析及治理对策探讨[J].石油机械,2009,37(2):66-70.LI Jianxiong,HU Guihua,LIU Yanqiu,et al.Failure analysis and countermeasures for separate injection string[J].China Petroleum Machinery,2009,37(2):66-70.
[5]姜广彬,姜道勇,郑金中,等.液控封隔器的设计与现场应用[J].石油机械,2010,38(1):48-50.JIANG Guangbin,JIANG Daoyong,ZHENG Jinzhong,et al.The design of hydraulic control packer and field application[J].China Petroleum Machinery,2010,38(1):48-50.
[6]李常友,刘明慧,贾兆军,等.液控式分层注水工艺技术[J].石油机械,2008,36(9):102-104.LI Changyou,LIU Minghui,JIA Zhaojun,et al.Technology of hydraulic control stratified waterflooding[J].China Petroleum Machinery,2008,36(9):102-104.
[7]安百新.YSYK344型液控压缩式封隔器研制与应用[J].石油矿场机械,2014,43(10):82-84.AN Baixin.Development and application of YSYK344 hydtaulic conttol comptession packer[J].Oil Field Equipment,2014,43(10):82-84.
[8]安百新,杨柳,聂文龙,等.油水井耐高温高压复合橡胶长效密封技术[J].中国石油和化工标准与质量,2016(22):113-114.AN Baixin,YANG Liu,NIE Wenlong,et al.Long term sealing technology of high temperature and high pressure composite rubber for oil-water wells[J].China Petroleum and Chemical Standard and Quality,2016(22):113-114.
[9]李旭,窦益华.压缩式封隔器胶筒变形阶段力学分析[J].石油矿场机械,2007,36(10):17-19.LI Xu,DOU Yihua.Mechanical analysis of compressed parking during axial compressing[J].Oil Field Equipment,2007,36(10):17-19.
[10]杜常桥,李世民,吕宏茹.封隔器胶筒应力数值模拟与结构优化研究[J].断块油气田,2008,15(2):104-106.DU Changqiao,LI Shimin,LYU Hongru.Numerical simulation and structural optimization of stress for packer rubber[J].Fault-Block Oil&Gas Field,2008,15(2):104-106.
[11]王云学,许仁波,孟奇龙,等.压缩式封隔器胶筒接触力学行为有限元分析[J].武汉科技大学学报,2017,40(1):61-64.WANG Yunxue,XU Renbo,MENG Qilong,et al.Mechanical behaviors of contact of compressive packer's rubber sleeve:a finite element analysis[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2017,40(1):61-64.
[12]刘红兰.海上油田注水井液控式环空安全封隔器的研制与应用[J].石油钻探技术,2017,45(5):103-107.LIU Honglan.Development and application of a hydraulic controltype safety annulus packer for water injectors in offshore oilfields[J].Petroleum Drilling Techniques,2017,45(5):103-107.
[13]刘清友,何玉发.深井注入管柱力学行为及应用[M].北京:科学出版社,2013:77-84.LIU Qingyou,HE Yufa.Mechanical behavior and application of deep well injection string[M].Beijing:Science Press,2013:77-84.
[2]刘合,裴晓含,罗凯,等.中国油气田开发分层注水工艺技术现状与发展趋势[J].石油勘探与开发,2013,40(6):733-737.LIU He,PEI Xiaohan,LUO Kai,et al.Current status and trend of separated layer water flooding in China[J].Petroleum Exploration and Development,2013,40(6):733-737.
[3]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.ZHU Junmeng,ZHAO Xia,MU Tinghua,et al.Optimization and application of offshore hydraulic separate layer water injection integrated technology[J].Oil Field Equipment,2015,44(9):72-75.
[4]李建雄,户贵华,刘艳秋,等.分注管柱失效原因分析及治理对策探讨[J].石油机械,2009,37(2):66-70.LI Jianxiong,HU Guihua,LIU Yanqiu,et al.Failure analysis and countermeasures for separate injection string[J].China Petroleum Machinery,2009,37(2):66-70.
[5]姜广彬,姜道勇,郑金中,等.液控封隔器的设计与现场应用[J].石油机械,2010,38(1):48-50.JIANG Guangbin,JIANG Daoyong,ZHENG Jinzhong,et al.The design of hydraulic control packer and field application[J].China Petroleum Machinery,2010,38(1):48-50.
[6]李常友,刘明慧,贾兆军,等.液控式分层注水工艺技术[J].石油机械,2008,36(9):102-104.LI Changyou,LIU Minghui,JIA Zhaojun,et al.Technology of hydraulic control stratified waterflooding[J].China Petroleum Machinery,2008,36(9):102-104.
[7]安百新.YSYK344型液控压缩式封隔器研制与应用[J].石油矿场机械,2014,43(10):82-84.AN Baixin.Development and application of YSYK344 hydtaulic conttol comptession packer[J].Oil Field Equipment,2014,43(10):82-84.
[8]安百新,杨柳,聂文龙,等.油水井耐高温高压复合橡胶长效密封技术[J].中国石油和化工标准与质量,2016(22):113-114.AN Baixin,YANG Liu,NIE Wenlong,et al.Long term sealing technology of high temperature and high pressure composite rubber for oil-water wells[J].China Petroleum and Chemical Standard and Quality,2016(22):113-114.
[9]李旭,窦益华.压缩式封隔器胶筒变形阶段力学分析[J].石油矿场机械,2007,36(10):17-19.LI Xu,DOU Yihua.Mechanical analysis of compressed parking during axial compressing[J].Oil Field Equipment,2007,36(10):17-19.
[10]杜常桥,李世民,吕宏茹.封隔器胶筒应力数值模拟与结构优化研究[J].断块油气田,2008,15(2):104-106.DU Changqiao,LI Shimin,LYU Hongru.Numerical simulation and structural optimization of stress for packer rubber[J].Fault-Block Oil&Gas Field,2008,15(2):104-106.
[11]王云学,许仁波,孟奇龙,等.压缩式封隔器胶筒接触力学行为有限元分析[J].武汉科技大学学报,2017,40(1):61-64.WANG Yunxue,XU Renbo,MENG Qilong,et al.Mechanical behaviors of contact of compressive packer's rubber sleeve:a finite element analysis[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2017,40(1):61-64.
[12]刘红兰.海上油田注水井液控式环空安全封隔器的研制与应用[J].石油钻探技术,2017,45(5):103-107.LIU Honglan.Development and application of a hydraulic controltype safety annulus packer for water injectors in offshore oilfields[J].Petroleum Drilling Techniques,2017,45(5):103-107.
[13]刘清友,何玉发.深井注入管柱力学行为及应用[M].北京:科学出版社,2013:77-84.LIU Qingyou,HE Yufa.Mechanical behavior and application of deep well injection string[M].Beijing:Science Press,2013:77-84.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |