煤层气超短半径水平井筛管完井技术研究
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摘要
为解决煤层气超短半径水平井煤层坍塌、煤粉产出造成的频繁修井等问题,维持超短半径水平井连续稳产生产,探讨超短半径水平井筛管完井工艺可行性,重点研究不同材料管柱的屈服弯曲半径,采用Wellplan软件进行超短曲率半径条件下管柱可通过性分析,优化设计管柱组合。基于煤粉颗粒分布、运移速度、过流面积等因素进行高密度聚乙烯(HDPE)筛管参数设计,采用有限元分析法进行筛管屈服强度分析。设计高密度聚乙烯(HDPE)筛管专用送入工具及下入工艺研究,进行案例设计分析,探讨工艺可行性。结果表明:直径116 mm尺寸井眼在曲率半径不小于12 m的情况下可下入直径40 mm高密度聚乙烯(HDPE)筛管完井,筛管本体不发生塑性变形,筛孔附近出现部分塑性变形,塑性变形的体积占筛管实体体积的14.58%,为井筒流体通过提供稳定通道。筛孔可阻挡较大的煤粉颗粒进入井筒造成卡泵,T型割缝具备一定清洁功能,减少煤粉颗粒卡塞割缝。研究结果推进煤层气超短半径水平井工艺技术发展。
In order to solve the problems of coal seam methane short radius horizontal well collapse and frequent work-over caused by pulverized coal production,and to maintain the continuous stable production of ultra-short radius horizontal wells,this paper discusses the feasibility of the completion technology of the screen pipe in the ultra-short radius horizontal well.The yield bending radius of different material columns is studied and Wellplan software is used to analyze the pass ability of the tube column under the condition of ultra-short radius of curvature.and the design of the pipe column combination is optimized.Thescreen parameters of high-density polyethylene( HDPE) were designed based on the distribution of pulverized coal particles,the speed of movement and the overflow area.The finite element analysis was used to analyze the yield strength of the screen.The design of special running-in tool and running-in process for high density polyethylene( HDPE) screen tube is studied,and case design analysis is carried out to explore the feasibility of the process.The results show that the wells with a diameter of 116 mm can be drilled into a 40 mm high-density polyethylene( HDPE) screen tube with a radius of curvature of not less than 12 m.The screen body does not plastically deform and some plasticity appears near the screen hole.The volume of plastic deformation accounts for 14.58% of the solid volume of the screen,providing a stable passage for the well-bore fluid to pass.The mesh hole can block the larger coal powder particles from entering the borehole and avoidblockage.The T-shaped slotting has a certain cleaning function.The results of this paper are intended to promote the development of process technology for ultra-short radius horizontal wells of coalbed methane.
In order to solve the problems of coal seam methane short radius horizontal well collapse and frequent work-over caused by pulverized coal production,and to maintain the continuous stable production of ultra-short radius horizontal wells,this paper discusses the feasibility of the completion technology of the screen pipe in the ultra-short radius horizontal well.The yield bending radius of different material columns is studied and Wellplan software is used to analyze the pass ability of the tube column under the condition of ultra-short radius of curvature.and the design of the pipe column combination is optimized.Thescreen parameters of high-density polyethylene( HDPE) were designed based on the distribution of pulverized coal particles,the speed of movement and the overflow area.The finite element analysis was used to analyze the yield strength of the screen.The design of special running-in tool and running-in process for high density polyethylene( HDPE) screen tube is studied,and case design analysis is carried out to explore the feasibility of the process.The results show that the wells with a diameter of 116 mm can be drilled into a 40 mm high-density polyethylene( HDPE) screen tube with a radius of curvature of not less than 12 m.The screen body does not plastically deform and some plasticity appears near the screen hole.The volume of plastic deformation accounts for 14.58% of the solid volume of the screen,providing a stable passage for the well-bore fluid to pass.The mesh hole can block the larger coal powder particles from entering the borehole and avoidblockage.The T-shaped slotting has a certain cleaning function.The results of this paper are intended to promote the development of process technology for ultra-short radius horizontal wells of coalbed methane.
引文
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[13]倪益民,袁永嵩,赵金海,等.胜利油田两口超短半径侧钻水平井的设计与施工[J].石油钻探技术,2007,35(6):57-59.NI Yimin,YUAN Yongsong,ZHAO Jinhai,et al. Design and implementation of two ultra-short radius side-tracking horizontal wells in Shengli Oilfield[J]. Petroleum Drilling Techniques,2007,35(6):57-59.
[14]蔡元.中1H侧钻短半径水平井钻井技术[J].断块油气田,2007,14(1):58-60.CAI Yuan. Sidetracking technology of horizontal well Middle 1H with short radius[J].Fault-Block Oilb Gas Field,2007,14(1):58-60.
[15]朱建军.侧钻超短半径水平井J37-26-P14井钻井设计与施[J].石油钻探技术,2011,39(5):106-109.ZHU Jianjun. Drilling design and implementation of sidetracking ultra-short radius horizontal well[J]. Petroleum Drilling Techniques,2011,39(5):106-109.
[16]傅阳朝,李兴明.连续油管技术[M].北京:石油工业出版社,2000:17-18.
[17]王勃,孙洪波.HDPE管穿越曲率半径及长度的选择[J].油气储运,2012,30(2):14-16.WANG Bo,SUN Hongbo. The radius of curvature and length selection of the PE pipe in crossing project[J].Oil and Gas Transportation and Storage,2012,30(2):14-16.
[18]陈振宏,王一兵,孙平,等.煤粉产出对高煤阶煤层气井产能的影响及其控制[J].煤炭学报,2009,34(2):229-232.CHEN Zhenhong,WANG Yibing,SUN Ping,et al.Destructive influences and effectively treatments coal powder to high rank coalbed methane production[J].Journal of China Coal Society,2009,34(2):229-232.
[19]苏海洋,申瑞臣,付利,等.煤层气水平井塑料割缝筛管有限元分析与参数优化[J].中国煤层气,2012,9(3):30-34.SU Haiyang,SHEN Ruichen,FU Li,et al.Finite element analysis of plastic slotted casing for CBM horizontal well and optimization of parameters[J].China Coalbed Methane,2012,9(3):30-34.
[20]王路超,徐兴平.基于ANSYS的割缝筛管强度分析[J].石油矿场机械,2007,36(4):41-43.WANG Luchao,XU Xingping,et al. Strength analysis of slotting screen with ANSYS[J]. Qil Field Equipment,2007,36(4):41-43.
[2]宫华,郑瑞强,范存,等.大庆油田超短半径水平井钻井技术[J].石油钻探技术,2011,39(5):19-22.GONG Hua,ZHENG Ruiqiang,FAN Cun,et al. Ultra-short radius horizontal well drilling technology in Daqing Oilfield[J].Petroleum Drilling Techniques,2011,39(5):19-22.
[3]黄健东,苏哲,郭梦如,等.径向水平井技术研究及应用[J].石油工业技术监督,2014,30(10):45-46.HUANG Jiandong,SU Zhe,GUO Mengru,et al. Research and Application of radial horizontal well technology[J]. Technology Supervision in Petroleum Industry,2014,30(10):45-46.
[4]侯玉品,张永利,章梦涛,等.超短半径水平井开采煤层气的探讨[J].矿山机械,2005,33(6):10-11.HOU Yupin,ZHANG Yongli,ZHANG Mengtao,et al.Discussion of exploration of coal bed methane with ultra-short radius horizontal well,Mining&Progress Equipment,2005,33(6):10-11.
[5]施连海,杨帆,黄志强,等.径向水平井技术的应用及其发展方向探讨[J].西部探矿工程,2014(7):60-64.SHI Lianhai,YANG Fan,HUANG Zhiqiang,et al. Application of radial horizontal well technology and its development direction[J].West-China Exploration Engineering,2014(7):60-64.
[6]张德荣,孔春岩,冯文荣,等.双层套管高效快速分叉技术研究及应用[J].西南石油大学学报:自然科学版,2015,37(1):161-162.ZHANG Derong,KONG Chunyan,FENG Wenrong,et al. Research and application of fast and efficient bifurcation technology of dual casing[J]. Journal of Southwest Petroleum University:Science&Technology Edition,2015,37(1):161-162.
[7]燕金友,张克键,董士同.深井小井眼短半径水平井钻井技术[J].石油钻探技术,2006,34(4):34-37.YAN Jinyou,ZHANG Kejian,Dong Shitong. Short-radius horizontal drilling technology for deep-slim hole sections[J].Petroleum Drilling Techniques,2006,34(4); 34-37.
[8]陈世春,王树超.小井眼侧钻短半径水平井钻井技术[J].石油钻采工艺,2007,29(3):11-14.CHEN Shichun,WANG Shuchao.Slim hole sidetracking and short-radius horizontal well drilling technology[J]. Oil Drilling Production Technology,2007,29(3):11-14.
[9]张义,鲜保安,赵庆波,等.超短半径径向水平井新技术及其在煤层气开采中的应用[J].中国煤层气,2008,5(4):20-24.ZHANG Yi,XIAN Baoan,ZHAO Qingbo,et al.Study on new technologies of ultra-short radius radial horizontal wells and application in coal-bed methane development[J],China Coalbed hane,2008,5(4):20-24.
[10]鲜保安,夏柏如,张义,等.开发低阶煤层气的新型径向水平井技术[J].煤田地质与勘探,2010,38(4):25-28.XIAN Baoan,XIA Bairu,ZHANG Yi,et al.Technical analysis on radial horizontal well for development of coalbed methane of low coal rank[J].Coal Geology&Exploration,2010,38(4):25-28.
[11]刘升贵,贺小黑,李惠芳.煤层气水平井煤粉产生机理及控制措施[J].辽宁工程技术大学学报,2011,30(4):508-512.LIU Shenggui,HE Xiaohei,LI Huifang,et al. Production mechanism and control measures of coal powder in coalbed methane horizontal well[J].Journal of Liaoning Technical University,2011,30(4):508-512.
[12]赵峰.超短半径侧钻分支水平井1-23-0370CH井设计与施工[J].石油钻采工艺,2009,31(6):37-39ZHAO Feng. Design and application of super-short radius sidetracking technology in Shu 1-23-0370CH multilateral horizontal well[J]. Oil Drilling Production Technology,2009,31(6):37-39.
[13]倪益民,袁永嵩,赵金海,等.胜利油田两口超短半径侧钻水平井的设计与施工[J].石油钻探技术,2007,35(6):57-59.NI Yimin,YUAN Yongsong,ZHAO Jinhai,et al. Design and implementation of two ultra-short radius side-tracking horizontal wells in Shengli Oilfield[J]. Petroleum Drilling Techniques,2007,35(6):57-59.
[14]蔡元.中1H侧钻短半径水平井钻井技术[J].断块油气田,2007,14(1):58-60.CAI Yuan. Sidetracking technology of horizontal well Middle 1H with short radius[J].Fault-Block Oilb Gas Field,2007,14(1):58-60.
[15]朱建军.侧钻超短半径水平井J37-26-P14井钻井设计与施[J].石油钻探技术,2011,39(5):106-109.ZHU Jianjun. Drilling design and implementation of sidetracking ultra-short radius horizontal well[J]. Petroleum Drilling Techniques,2011,39(5):106-109.
[16]傅阳朝,李兴明.连续油管技术[M].北京:石油工业出版社,2000:17-18.
[17]王勃,孙洪波.HDPE管穿越曲率半径及长度的选择[J].油气储运,2012,30(2):14-16.WANG Bo,SUN Hongbo. The radius of curvature and length selection of the PE pipe in crossing project[J].Oil and Gas Transportation and Storage,2012,30(2):14-16.
[18]陈振宏,王一兵,孙平,等.煤粉产出对高煤阶煤层气井产能的影响及其控制[J].煤炭学报,2009,34(2):229-232.CHEN Zhenhong,WANG Yibing,SUN Ping,et al.Destructive influences and effectively treatments coal powder to high rank coalbed methane production[J].Journal of China Coal Society,2009,34(2):229-232.
[19]苏海洋,申瑞臣,付利,等.煤层气水平井塑料割缝筛管有限元分析与参数优化[J].中国煤层气,2012,9(3):30-34.SU Haiyang,SHEN Ruichen,FU Li,et al.Finite element analysis of plastic slotted casing for CBM horizontal well and optimization of parameters[J].China Coalbed Methane,2012,9(3):30-34.
[20]王路超,徐兴平.基于ANSYS的割缝筛管强度分析[J].石油矿场机械,2007,36(4):41-43.WANG Luchao,XU Xingping,et al. Strength analysis of slotting screen with ANSYS[J]. Qil Field Equipment,2007,36(4):41-43.