东方1-1气田浅层大位移水平井钻井技术
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摘要
东方1-1气田浅部储层已进入开发中后期,受海上平台空间、井槽数量等条件限制,现多采用"外挂井槽+大位移井"或"老井侧钻+大位移井"的模式挖潜平台周边剩余油气。该区域浅部地层疏松,同时受群桩效应影响,表层桩管鞋易窜漏,井眼轨迹控制难度大,并且该气田储层压力衰竭,在前期的钻井作业过程中卡钻、卡套管、井漏等井下复杂情况频发,钻井时效低于70%。针对以上问题,在表层隔水管选型、提高钻井液封堵性及润滑性、精细控制井眼轨迹等方面进行了技术攻关,于2016年在东方1-1气田X4平台4口大位移水平井上进行了应用并进一步完善,最终形成一套适用于该气田的浅层大位移水平井钻井技术。2017年底将该技术应用于东方1-1气田X1平台的1口水平位移4 107 m、水垂比3.119的水平井,整个钻进过程未发生漏失及井下复杂情况,钻井时效提高至99%,该研究为东方1-1气田后续类似井施工提供了技术参考。
The shallow reservoirs in Dongfang 1-1 Gasfield are in the middle and late stage of development. Due to the restriction of offshore platform space and well slot quantity, the potential tapping of remaining oil and gas in the periphery of the platform is mostly carried out in the mode of "external additional well slot+extended reach well" or "old well sidetracking+extended reach well". The shallow formations in this area are unconsolidated, and together with the effect of pile group, channeling and leakage tend to happen at the surface pile casing shoe and well trajectory control is difficult. Besides, the reservoir pressure in this Gasfield is depleted. As a result, the complicated downhole accidents happen frequently in the process of early drilling, such as pipe sticking, casing sticking and lost circulation, and the drilling time efficiency is lower than 70%. A series of technological researches were carried out in terms of surface riser type selection, drilling fluid plugging and lubricating performance improvement and fine well trajectory control to solve these problems. In 2016, the research results were applied in 4 extended reach horizontal wells on X4 platform in Dongfang 1-1 Gasfield. Thus, a set of extended reach horizontal well drilling technology suitable for the shallow layers in Dongfang 1-1 Gasfield were ultimately developed after further improvement. In 2017, this technology was applied in one horizontal well with horizontal displacement of 4 107 m and horizontal-to-vertical ratio of 3.119 on X1 platform in Dongfang 1-1 Gasfield. No leakage or complex downhole situations occurred in the whole process of drilling and the drilling time efficiency was increased to 99%. The research results provide the technical reference for the construction of similar wells in Dongfang 1-1 Gasfield.
The shallow reservoirs in Dongfang 1-1 Gasfield are in the middle and late stage of development. Due to the restriction of offshore platform space and well slot quantity, the potential tapping of remaining oil and gas in the periphery of the platform is mostly carried out in the mode of "external additional well slot+extended reach well" or "old well sidetracking+extended reach well". The shallow formations in this area are unconsolidated, and together with the effect of pile group, channeling and leakage tend to happen at the surface pile casing shoe and well trajectory control is difficult. Besides, the reservoir pressure in this Gasfield is depleted. As a result, the complicated downhole accidents happen frequently in the process of early drilling, such as pipe sticking, casing sticking and lost circulation, and the drilling time efficiency is lower than 70%. A series of technological researches were carried out in terms of surface riser type selection, drilling fluid plugging and lubricating performance improvement and fine well trajectory control to solve these problems. In 2016, the research results were applied in 4 extended reach horizontal wells on X4 platform in Dongfang 1-1 Gasfield. Thus, a set of extended reach horizontal well drilling technology suitable for the shallow layers in Dongfang 1-1 Gasfield were ultimately developed after further improvement. In 2017, this technology was applied in one horizontal well with horizontal displacement of 4 107 m and horizontal-to-vertical ratio of 3.119 on X1 platform in Dongfang 1-1 Gasfield. No leakage or complex downhole situations occurred in the whole process of drilling and the drilling time efficiency was increased to 99%. The research results provide the technical reference for the construction of similar wells in Dongfang 1-1 Gasfield.
引文
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[7]王宴滨,高德利,房军.海洋钻井隔水管-钻井液横向耦合振动特性[J].石油钻采工艺,2015,37(1):25-29.WANG Yanbin,GAO Deli,FANG Jun.Characteristic analysis on transverse coupling vibration of offshore drilling riser-drilling fluid[J].Oil Drilling&Production Technology,2015,37(1):25-29.
[8]刘书杰,谢玉洪,杨进,谢仁军,张春阳,林海春,彭作汝.海洋深水钻井隔水管系统动力特性分析[J].石油钻采工艺,2009,31(3):1-4.LIU Shujie,XIE Yuhong,YANG Jin,XIE Renjun,ZHANG Chunyang,LIN Haichun,PENG Zuoru.Drilling riser dynamic characteristics of marine deep water[J].Oil Drilling&Production Technology,2009,31(3):1-4.
[9]杨进,彭苏萍,周建良,刘书杰.海上钻井隔水导管最小入泥深度研究[J].石油钻采工艺,2002,24(2):1-3.YANG Jin,PENG Suping,ZHOU Jianliang,LIU Shujie.Study on the minimum driving depth of offshore drilling riser[J].Oil Drilling&Production Technology,2002,24(2):1-3.
[10]覃成锦,高德利,唐海雄,魏宏安.南海流花超大位移井井身结构设计方法[J].石油钻采工艺,2006,28(1):13-14,28.TAN Chengjin,GAO Deli,TANG Haixiong,WEIHongan.Casing program design method for liuhua mega-extended-reach wells in south China sea[J].Oil Drilling&Production Technology,2006,28(1):13-14,28.
[11]张岩,向兴金,鄢捷年,吴彬,舒福昌.快速钻井中泥球形成的影响因素与控制措施[J].中国海上油气,2011,23(5):335-339.ZHANG Yan,XIANG Xingjin,YAN Jienian,WUBin,SHU Fuchang.Influence factors and controlling measures on formation of gumbo balls during fast drilling[J].China Offshore Oil and Gas,2011,23(5):335-339.
[12]程玉生,杨洪烈,胡文军,卜继勇,向雄.乐东22-1气田超浅层大位移井钻井液技术[J].石油天然气学报,2014,36(12):146-148.CHENG Yusheng,YANG Honglie,HU Wenjun,PUJiyong,XIANG Xiong.Ultra-shallow extended reach well drilling fluid technology in Ledong 22-1 gas field[J].Journal of Oil and Gas Technology,2014,36(12):146-148.
[13]贺雷.新型膜屏蔽钻井液研究[D].东营:中国石油大学(华东),2011.HE Lei.Research on a new membrane shielding drilling fluid[D].Dongying:China University of Petroleum(East China),2011.
[14]李龙,王磊,王成林,陈聪,刘和兴.Power Drive Xceed新型旋转导向工具在南海西部的首次应用[J].石油钻采工艺,2010,32(5):24-27.LI Long,WANG Lei,WANG Chenglin,CHEN Cong,LIU Hexing.First application of the new-style rotary steering tool,Power Drive Xceed,in west of South China Sea[J].Oil Drilling&Production Technology,2010,32(5):24-27.
[15]张和茂,赵子仁,伊明.浅层水平井井眼轨迹控制技术[J].石油钻采工艺,1988,20(5):1-5.ZHANG Hemao,ZHAO Ziren,YI Ming.Well trajectory control technology for shallow horizontal well[J].Oil Drilling&Production Technology,1988,20(5):1-5.
[2]黄月银,成涛,何巍,高翠欣.综合开发技术在东方气田的应用[J].石油钻采工艺,2007,29(6):52-55.HUANG Yueyin,CHENG Tao,HE Wei,GAO Cuixin.Application of comprehensive development technology in Dongfang Gasfield[J].Oil Drilling&Production Technology,2007,29(6):52-55.
[3]闫传梁,邓金根,蔚宝华,谭强,邓福成,胡连波.压力衰竭储层井壁稳定性变化规律研究[J].石油钻采工艺,2013,35(3):5-8.YAN Chuanliang,DENG Jingen,WEI Baohua,TANQiang,DENG Fucheng,HU Lianbo.Research on wellbore stability of pressure depleted reservoirs[J].Oil Drilling&Production Technology,2013,35(3):5-8.
[4]王鹏.隔水管柱力学分析[D].秦皇岛:燕山大学,2011.WANG Peng.Mechanical analysis of riser[D].Qinghuangdao:Yanshan University,2011.
[5]王海峡,赵广慧,章靖,余长柏,李维国.内外流体流动下隔水管横向振动模型的探讨[J].石油矿场机械,2010,39(8):12-15.WANG Haixia,ZHAO Guanghui,ZHANG Jing,YUChangbai,LI Weiguo.Discussion of transverse vibration model of riser under loads of internal flowing mud and external environmental[J].Oil Field Equipment,2010,39(8):12-15.
[6]李中,杨进,曹式敬,黄熠,郭永宾,谢仁军.深海水域钻井隔水管力学特性分析[J].石油钻采工艺,2007,29(1):19-21.LI Zhong,YANG Jin,CAO Shijing,HUANG Yi,GUO Yongbin,XIE Renjun.Analysis of mechanics characteristics of deep sea drilling risers[J].Oil Drilling&Production Technology,2007,29(1):19-21.
[7]王宴滨,高德利,房军.海洋钻井隔水管-钻井液横向耦合振动特性[J].石油钻采工艺,2015,37(1):25-29.WANG Yanbin,GAO Deli,FANG Jun.Characteristic analysis on transverse coupling vibration of offshore drilling riser-drilling fluid[J].Oil Drilling&Production Technology,2015,37(1):25-29.
[8]刘书杰,谢玉洪,杨进,谢仁军,张春阳,林海春,彭作汝.海洋深水钻井隔水管系统动力特性分析[J].石油钻采工艺,2009,31(3):1-4.LIU Shujie,XIE Yuhong,YANG Jin,XIE Renjun,ZHANG Chunyang,LIN Haichun,PENG Zuoru.Drilling riser dynamic characteristics of marine deep water[J].Oil Drilling&Production Technology,2009,31(3):1-4.
[9]杨进,彭苏萍,周建良,刘书杰.海上钻井隔水导管最小入泥深度研究[J].石油钻采工艺,2002,24(2):1-3.YANG Jin,PENG Suping,ZHOU Jianliang,LIU Shujie.Study on the minimum driving depth of offshore drilling riser[J].Oil Drilling&Production Technology,2002,24(2):1-3.
[10]覃成锦,高德利,唐海雄,魏宏安.南海流花超大位移井井身结构设计方法[J].石油钻采工艺,2006,28(1):13-14,28.TAN Chengjin,GAO Deli,TANG Haixiong,WEIHongan.Casing program design method for liuhua mega-extended-reach wells in south China sea[J].Oil Drilling&Production Technology,2006,28(1):13-14,28.
[11]张岩,向兴金,鄢捷年,吴彬,舒福昌.快速钻井中泥球形成的影响因素与控制措施[J].中国海上油气,2011,23(5):335-339.ZHANG Yan,XIANG Xingjin,YAN Jienian,WUBin,SHU Fuchang.Influence factors and controlling measures on formation of gumbo balls during fast drilling[J].China Offshore Oil and Gas,2011,23(5):335-339.
[12]程玉生,杨洪烈,胡文军,卜继勇,向雄.乐东22-1气田超浅层大位移井钻井液技术[J].石油天然气学报,2014,36(12):146-148.CHENG Yusheng,YANG Honglie,HU Wenjun,PUJiyong,XIANG Xiong.Ultra-shallow extended reach well drilling fluid technology in Ledong 22-1 gas field[J].Journal of Oil and Gas Technology,2014,36(12):146-148.
[13]贺雷.新型膜屏蔽钻井液研究[D].东营:中国石油大学(华东),2011.HE Lei.Research on a new membrane shielding drilling fluid[D].Dongying:China University of Petroleum(East China),2011.
[14]李龙,王磊,王成林,陈聪,刘和兴.Power Drive Xceed新型旋转导向工具在南海西部的首次应用[J].石油钻采工艺,2010,32(5):24-27.LI Long,WANG Lei,WANG Chenglin,CHEN Cong,LIU Hexing.First application of the new-style rotary steering tool,Power Drive Xceed,in west of South China Sea[J].Oil Drilling&Production Technology,2010,32(5):24-27.
[15]张和茂,赵子仁,伊明.浅层水平井井眼轨迹控制技术[J].石油钻采工艺,1988,20(5):1-5.ZHANG Hemao,ZHAO Ziren,YI Ming.Well trajectory control technology for shallow horizontal well[J].Oil Drilling&Production Technology,1988,20(5):1-5.
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