Drilling Techniques in J-Shaped Extended Reach Horizontal Wells in Shallow Coal Bed Methane Reservoirs in the Zhijin Block
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摘要: 织金煤层气区块存在煤层钻遇率低、储层保护难度大、水平连通井钻井成本高、经济收益低等问题,为此,在分析该区块J形水平井工程技术难点的基础上,从井眼轨道优化设计、井身结构优化设计、井眼轨迹控制技术等方面进行了浅层煤层气J形大位移水平井钻井技术研究,并在织平1井进行了试验。织平1井顺利完钻,水平段长500.00 m,水平位移818.98 m,最大井斜角97.6°,钻遇煤层293.00 m,煤层钻遇率58.6%,远高于水平连通井的煤层钻遇率(43.6%),且钻井成本为U形水平连通井的58%。这表明,采用J形水平井钻井技术可以解决织金煤层气区块存在的问题,可以在织金区块推广应用。Abstract: The drilling phase for in the Zhijin coalbed methane (CBM) block is characterized by a low drilling rate for the coal seam, a difficult-to-protect reservoir, high cost of drilling horizontal connected wells, and a low economic benefit. In order to solve these problems, the technical difficulties of J-shaped horizontal drilling were applied to this block and analyzed. Then, drilling techniques in such wells drilling in shallow CMB reservoirs were studied from well track optimization, casing program optimization and borehole trajectory control. Finally, the process underwent a practical test in the Zhiping 1 Well. This well was drilled smoothly with horizontal lateral of 500.00 m, horizontal displacement 818.98 m, maximum deviation angle 97.6°, drilled coal seams 293.00 m and coal seam drilling rate 58.6%, which is much higher than that of horizontal connected wells (43.6%). In addition, the cost to drill the well was only 58% of that of U-shaped horizontal connected wells. The positive results indicated that these drilling techniques in J-shaped horizontal well could be successfully implemented in drilling wells in the Zhijin Block.
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Keywords:
- coalbed methane /
- extended reach well /
- horizontal well /
- casing program /
- borehole trajectory /
- Zhijin Block /
- Well Zhiping 1
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[1] 鲜保安,陈彩红,王宪花,等.多分支水平井在煤层气开发中的控制因素及增产机理分析[J].中国煤层气,2005,2(1):14-17. XIAN Baoan,CHEN Caihong,WANG Xianhua,et al.Analysis on control factors and production enhancing mechanism of multiple laterals horizontal well in developing CBM[J].China Coalbed Methane,2005,2(1):14-17. [2] 杨陆武,孙茂远,胡爱梅,等.适合中国煤层气藏特点的开发技术[J].石油学报,2002,23(4):46-50. YANG Luwu,SUN Maoyuan,HU Aimei,et al.New technology series favorable to develop coal bed methane reservoirs in China[J].Acta Petrolei Sinica,2002,23(4):46-50. [3] 田中岚.山西晋城地区煤层气钻井完井技术[J].煤田地质与勘探,2001,29(3):25-28. TIAN Zhonglan.Drilling completion techniques for coalbed methane wells in Jincheng Area,Shanxi,China[J].Coal Geology Exploration,2001,29(3):25-28. [4] 黄洪春,卢明,申瑞臣.煤层气定向羽状水平井钻井技术研究[J].天然气工业,2004,24(5):76-78. HUANG Hongchun,LU Ming,SHEN Ruichen.Study on pinnate horizontal directional drilling technique of coal-bed gas[J].Natural Gas Industry,2004,24(5):76-78. [5] 杨力.和顺地区煤层气远端水平连通井钻井技术[J].石油钻探技术,2010,38(3):40-43. YANG Li.Remote-end horizontal communication drilling technology for coal bed methane in Heshun Block[J].Petroleum Drilling Techniques,2010,38(3):40-43. [6] 王洪光,肖利民,赵海艳.连通水平井工程设计与井眼轨迹控制技术[J].石油钻探技术,2007,35(2):76-78. WANG Hongguang,XIAO Limin,ZHAO Haiyan.Design of interconnecting horizontal wells and wellbore trajectory control technique[J].Petroleum Drilling Techniques,2007,35(2):76-78. [7] 鲍清英,张义,何伟平,等.煤层气羽状水平井井眼轨迹控制技术[J].石油钻采工艺,2010,32(4):86-90. BAO Qingying,ZHANG Yi,HE Weiping,et al.Study on well path control technologies for pinnate horizontal CBM wells[J].Oil Drilling Production Technology,2010,32(4):86-90. [8] 郭元恒,何世明,刘忠飞,等.长水平段水平井钻井技术难点分析及对策[J].石油钻采工艺,2013,35(1):14-18. GUO Yuanheng,HE Shiming,LIU Zhongfei,et al.Difficulties and countermeasures for drilling long lateral-section horizontal wells[J].Oil Drilling Production Technology,2013,35(1):14-18. [9] 张福强,易铭.提高煤层气水平井煤层钻遇率的关键技术[J].中国煤炭地质,2012,24(9):61-65. ZHANG Fuqiang,YI Ming.Key techniques to improve multilateral horizontal CBM well coal seam intersecting rate[J].Coal Geology of China,2012,24(9):61-65. [10] 王荣璟,鄢泰宁,张涛.ZTS-172M电磁波随钻测量系统及其在胜利油田的应用[J].地质科技情报,2005,24(增刊1):33-36. WANG Rongjing,YAN Taining,ZHANG Tao.ZTS-172M electromagnetic wave MWD and application in Shengli Oilfield[J].Geological Science and Technology Information,2005,24(supplement 1):33-36. -
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