北部湾盆地勘探井小尺寸隔水导管技术
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摘要
海上隔水导管设计直接影响到作业安全、工期及费用,在满足作业安全的前提下,如何设计合适的隔水导管来提高钻井速度、降低钻井成本是区域勘探井钻井的关键问题之一。基于边界约束条件,考虑作业海域水文气象季节性影响,建立了小尺寸隔水导管强度设计方法及稳定性分析,并进行了实际应用。结果证实,在北部湾海域非台风季节下作业,小尺寸隔水导管技术可以弥补常规?508 mm隔水导管设计工期长、费用高的问题,同时也能解决?508 mm×?339.73 mm变径组合隔水导管"盲替"固井方式的缺陷。该技术的成功应用,突破了传统常用的?508 mm隔水导管井口稳定需求的限制,为今后北部湾勘探井隔水导管设计提供了新的参考方向,也为后续勘探井可持续发展的安全高效作业奠定基础。
The design of offshore riser has the direct effect on drilling safety, cycle and cost, so one of the key issues for the drilling of offshore exploration wells is how to design a proper riser to increase the drilling speed and reduce the drilling cost while ensuring the drilling safety. The strength and stability of small-size riser was analyzed based on boundary constraint conditions, combined with seasonal effect of hydrometeorology in the sea area of the operation. Then it was applied on site. It is proved that as for the operation in the Beibuwan sea area in non-Typhoon seasons, the small-size riser technology can solve the long design time and high cost of the conventional ?508 mm riser and cover the shortage of "blind replacement" cementing of ?508 mm×?339.73 mm riser assembly. Its successful application breaks the limitation of conventional ?508 mm riser on wellhead stability requirement, provides the new reference for the future design of risers in exploration wells in the Beibuwan Basin, and establishes the foundation for sustainable safe and efficient operation of exploration wells in the Beibuwan Basin in the future.
The design of offshore riser has the direct effect on drilling safety, cycle and cost, so one of the key issues for the drilling of offshore exploration wells is how to design a proper riser to increase the drilling speed and reduce the drilling cost while ensuring the drilling safety. The strength and stability of small-size riser was analyzed based on boundary constraint conditions, combined with seasonal effect of hydrometeorology in the sea area of the operation. Then it was applied on site. It is proved that as for the operation in the Beibuwan sea area in non-Typhoon seasons, the small-size riser technology can solve the long design time and high cost of the conventional ?508 mm riser and cover the shortage of "blind replacement" cementing of ?508 mm×?339.73 mm riser assembly. Its successful application breaks the limitation of conventional ?508 mm riser on wellhead stability requirement, provides the new reference for the future design of risers in exploration wells in the Beibuwan Basin, and establishes the foundation for sustainable safe and efficient operation of exploration wells in the Beibuwan Basin in the future.
引文
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[12]姜伟.单桩变刚度结构隔水导管稳定性研究及设计方法探讨[J].中国海上油气,2006,18(3):186-189.JIANG Wei.Discussion on stability study and design method of conductor with single pile and variable rigidity structure[J].China Offshore Oil and Gas,2006,18(3):186-189.
[13]姜伟.钻井隔水导管临界载荷及弹性稳定性研究[J].中国海上油气,2006,18(6):403-407.JIANG Wei.Study on critical load and elastic stability of drilling riser[J].China Offshore Oil and Gas,2006,18(6):403-407.
[14]郑运虎,姜峰.风波流联合作用下的浅海域隔水导管屈曲仿真[J].西华大学学报(自然科学版),2015,34(2):103-107.ZHENG Yunhu,JIANG Feng.The buckling simulation of drilling riser in shallow waters under the combined effects of wind,waves and currents[J].Journal of Xihua University(Natural Science Edition),2015,34(2):103-107.
[15]杨进,刘书杰,周建良,谭先红,黄熠,段泽辉.风浪流作用下隔水导管强度及安全性计算[J].中国海上油气,2006,18(3):198-200.YANG Jin,LIU Shujie,ZHOU Jianliang,TANXianhong,HUANG Yi,DUAN Zehui.Strength and security calculation on riser with the effect of wind,wave and current[J].China Offshore Oil and Gas,2006,18(3):198-200.
[2]曹雪峰,陈波,侍茂崇,郭佩芳,石洪源.北部湾水文气象极值参数研究[J].海洋环境科学,2017,36(4):495-500.CAO Xuefeng,CHEN Bo,SHI Maochong,GUO Peifang,SHI Hongyuan.Studies of hydro-meteorological return level in Beibu gulf[J].Marine Environmental Science,2017,36(4):495-500.
[3]乔方利,于卫东,潘增弟.中国南海北部湾海区风浪极值参数的研究-LAGFD数值模式群的应用[J].水动力学研究与进展,1997,12(1):84-95.QIAO Fangli,YU Weidong,PAN Zhengdi.Study on the wind and wave extreme parameters of Tonkin Gulf in the South China sea-the applications of LAGFD numerical models[J].Journal of Hydrodynamics,1997,12(1):84-95.
[4]胡勤峰.海上自升式钻井平台探井井口稳定性分析[J].石油钻采工艺,2007,29(6):10-12.HU Qinfeng.Wellhead stability analysis of offshore selfelevating exploratory well in drilling platform[J].Oil Drilling&Production Technology,2007,29(6):10-12.
[5]邵诗军,赵宝祥,罗鸣,徐一龙,娄来柱,赵苏文.南海西部油田“一开双眼”钻井技术[J].石油钻探技术,2011,39(1):119-122.SHAO Shijun,ZHAO Baoxiang,LUO Ming,XU Yilong,LOU Laizhu,ZHAO Suwen.“Twinhole Drilled at First Spudding”in Southwest China Sea Oilfield[J].Petroleum Drilling Techniques,2011,39(1):119-122.
[6]赵学战,管申,郭希玺,方满宗,鹿传世.崖城13-1-A16井表层“一开双眼”定向钻井技术[J].石油钻采工艺,2012,34(增刊1):9-11.ZHAO Xuezhan,GUAN Shen,GUO Xixi,FANGManzong,LU Chuanshi.“Twinhole Drilled at First Spudding”directional drilling technology of 13-1-A16well surface in Yacheng[J].Oil Drilling&Production Technology,2012,34(S1):9-11.
[7]姜伟.轴向荷载对海面以上保留井口的安全问题[J].中国海上油气,2001,13(4):57-60.JIANG Wei.Discussion on wellhead safety affected by axial load from retaining wellhead above seawaterl[J].China Offshore Oil and Gas(Engineering),2001,13(4):57-60.
[8]王树青,梁丙臣.海洋工程波浪力学[M].青岛:中国海洋大学出版社,2010:11-13.WANG Shuqing,LIANG Bingchen.Wave mechanics for ocean engineering[M].Qingdao:China Ocean University Press,2010:11-13.
[9]竺艳蓉.海洋工程波浪力学[M].天津大学出版社,1991.ZHU Yanrong.Wave mechanics for ocean engineering[M].Tianjin:Tianjin University Press,1991.
[10]施雷,张红,冯定,马威,晏健,李志敏.海上隔水套管力学分析[J].石油机械,2013,41(11):65-69.SHI Lei,ZHANG Hong,FENG Ding,MA Wei,YANJian,LI Zhimin.Mechanical analysis of offshore riser[J].China Petroleum Machinery,2013,41(11):65-69.
[11]王兴国,翟刚军,周晶,康海贵.单腿导管架平台的设计与结构内力分析[J].中国海洋平台,2003,18(3):20-23.WANG Xingguo,ZHAI Gangjun,ZHOU Jing,KANGHaigui.The design of a single-leg jacket platform and an analysis of internal forces of its structure[J].China Offshore Platform,2003,18(3):20-23.
[12]姜伟.单桩变刚度结构隔水导管稳定性研究及设计方法探讨[J].中国海上油气,2006,18(3):186-189.JIANG Wei.Discussion on stability study and design method of conductor with single pile and variable rigidity structure[J].China Offshore Oil and Gas,2006,18(3):186-189.
[13]姜伟.钻井隔水导管临界载荷及弹性稳定性研究[J].中国海上油气,2006,18(6):403-407.JIANG Wei.Study on critical load and elastic stability of drilling riser[J].China Offshore Oil and Gas,2006,18(6):403-407.
[14]郑运虎,姜峰.风波流联合作用下的浅海域隔水导管屈曲仿真[J].西华大学学报(自然科学版),2015,34(2):103-107.ZHENG Yunhu,JIANG Feng.The buckling simulation of drilling riser in shallow waters under the combined effects of wind,waves and currents[J].Journal of Xihua University(Natural Science Edition),2015,34(2):103-107.
[15]杨进,刘书杰,周建良,谭先红,黄熠,段泽辉.风浪流作用下隔水导管强度及安全性计算[J].中国海上油气,2006,18(3):198-200.YANG Jin,LIU Shujie,ZHOU Jianliang,TANXianhong,HUANG Yi,DUAN Zehui.Strength and security calculation on riser with the effect of wind,wave and current[J].China Offshore Oil and Gas,2006,18(3):198-200.