Auxiliary Fracturing and Testing of Gas in Shale Gas Well with Coiled Tubing
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摘要: 目前国内页岩气开发中已普遍使用连续油管,但使用中连续油管挤毁、变形、自锁、钻磨效率低和井下工具遇卡、落井等问题时有发生。针对这些问题,对国内外相关技术与理论进行了调研分析,选取了高性能小尺寸的井下工具复合式连接器、防脱式螺杆钻具、五翼凹底磨鞋、水力振荡器和打捞加速器等,并通过不断改进施工工艺,形成了适合国内页岩气开发的连续油管铺助压裂试气集成技术,包括长水平段连续油管下桥塞技术、长水平段连续油管钻复合桥塞技术、长水平段连续油管射孔技术和长水平段连续油管打捞冲砂技术等。现场应用表明,应用上述集成技术后,单只桥塞的纯钻塞时间由70 min缩短至40 min,单井钻塞周期由9 d缩短至5 d,桥塞钻除率由97%升至100%;射孔时未发生油管挤毁现象;打捞一次成功率及连续油管坐封桥塞一次成功率均达到100%。研究表明,该集成技术可有效提高页岩气井压裂试气成功率。Abstract: Coiled tubing has been widely used in shale gas development in China, there have been significant difficulties, such as tubing collapse, deformation, self-locking, low efficiency in drilling and milling, getting stuck and falling into the hole. Aiming to mitigate or eliminate these problems, relative analysis and technical investigation have been conducted at home and abroad, especially by using the high performance compound connector with small size, anti-drop PDM, five-blade concave mill, hydraulic oscillator and fishing accelerator, a integrated coiled tubing technology for supplementary fracturing and gas testing has been formed in shale gas development, including plug setting in long horizontal section, a drilling bridge plug, perforating, fishing and sand washing in an extended horizontal well. Field application demonstrated that by using the new techniques, the time of drilling one plug was reduced from 70 min to 40 min, the drilling plug cycle in a well reduced from 9 days to 5 days, drilling and removing rate of plugs raised from 97% to 100%, tubing collapse has not happened in perforating, the success rate of fishing and setting plug reached to 100%. All in all, the practice showed that the integrated technology could improve the success rate of fracturing and gas testing in shale gas wells.
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Keywords:
- shale gas /
- horizontal well /
- coiled tubing /
- bridge plug /
- fracturing /
- gas production test
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[1] 吕选鹏,周承富,陈辉,等.连续油管技术在页岩气勘探开发中应用前景[J].石油矿场机械,2012,41(2):67-70. Lv Xuanpeng,Zhou Chengfu,Chen Hui,et al.Coiled tubing technology prospect in exploration and development of shale gas[J].Oil Field Equipment,2012,41(2):67-70. [2] 刘成.吐哈油田连续油管技术的应用[J].石油矿场机械,2001,34(1):45-47. Liu Cheng.Application of coiled tubing in Tuha Oilfield[J].Oil Field Equipment,2001,34(1):45-47. [3] 贺会群.连续油管技术与装备发展综述[J].石油机械,2006,34(1):1-6. He Huiqun.Development of coiled tubing technique and equipment[J].China Petroleum Machinery,2006,34(1):1-6. [4] 向刚,卢秀德,宋丹.连续油管钻磨工艺螺杆马达特性分析及现场应用[J].钻采工艺,2014,37(1):75-77. Xiang Gang,Lu Xiude,Song Dan.Charcteristics analysis and fieled application of screw motor used in coiled tubing milling technology[J].Drilling Production Technology,2014,37(1):75-77. [5] 白田增,吴德,康如坤.泵送式复合桥塞钻磨工艺研究与应用[J].石油钻采工艺,2014,36(1):123-125. Bai Tianzeng,Wu De,Kang Rukun.Research and application of drilling technique of pumping type composite bridge plug[J].Oil Drilling Production Technology,2014,36(1):123-125. [6] 张仕民,杨德福,陈迎春.连续管水平井钻磨作业力学分析[J].石油机械,2014,42(8):33-36. Zhang Shimin,Yang Defu,Chen Yingchun.Mechanical analysis of coiled tubing in horizontal well drilling and milling[J].China Petroleum Machinery,2014,42(8):33-36. [7] 石孝志,苏贵杰,王忠胜,等.连续油管打捞技术在川渝地区的应用[J].天然气工业,2008,28(8):58-60. Shi Xiaozhi,Su Guijie,Wang Zhongsheng,et al.Application of coiled tubing fishing technology in Sichuan and Chongqing Area[J].Natural Gas Industry,2008,28(8):58-60. -
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