页岩气井无限级固井滑套压裂技术
|
摘要
传统的页岩气井多级桥塞射孔联作压裂无法保证压裂液和支撑剂的去向,压裂效果差。无限级固井滑套压裂技术井下工具由趾端滑套、固井滑套及滑套开关工具组成,根据国内页岩气地质情况优化开关滑套及压裂施工程序,针对施工井况制定应急处置措施,在涪陵页岩气田进行了实际应用。实际应用中出现因固井质量差滑套的开启难以满足预期、连续油管外压裂时对管材易冲蚀、封隔器附近易发生砂堵、施工排量限制较多、封隔器不容易通过滑套、连续油管水平段延伸困难等多种问题。该工艺对埋藏深、水平段长、井眼轨迹复杂、压裂改造规模较大的页岩气井还未完全适用,还需继续探索。
The traditional multi-stage bridge plug perforation cannot guarantee the direction of fracturing fluid and proppant when fracturing,and the fracturing effect cannot be guaranteed,which leads to a bad the fracturing result. An infinite-stage cementing sliding sleeve fracturing downhole tool was designed by combining the toe-end sliding sleeve,cementing sliding sleeve and sliding sleeve switching tool combination. According to the domestic shale gas geological conditions,this paper optimizes the switch sleeve and the construction procedures of fracturing and formulates emergency treatment measures for the specific well conditions of construction. Finally,the technology has been successfully applied in the Fuling shale gas field. However,a series of problems have arisen in the actual application process. For example,poor cementing quality will cause the opening of the sliding sleeve cannot meet the expectations; the tubing is prone to erosion during fracturing because of has high requirements on the strength of the tubing; sand plugging is easy to occur near the packer; there are many restrictions on construction displacement; packer does not easily pass through the sliding sleeve;and the horizontal section of coiled tubing is difficult to extend. For shale gas wells with deep burial,long horizontal section,complex well trajectory and large scale of fracturing,this technology is not fully applicable,so it is necessary to continue exploring.
The traditional multi-stage bridge plug perforation cannot guarantee the direction of fracturing fluid and proppant when fracturing,and the fracturing effect cannot be guaranteed,which leads to a bad the fracturing result. An infinite-stage cementing sliding sleeve fracturing downhole tool was designed by combining the toe-end sliding sleeve,cementing sliding sleeve and sliding sleeve switching tool combination. According to the domestic shale gas geological conditions,this paper optimizes the switch sleeve and the construction procedures of fracturing and formulates emergency treatment measures for the specific well conditions of construction. Finally,the technology has been successfully applied in the Fuling shale gas field. However,a series of problems have arisen in the actual application process. For example,poor cementing quality will cause the opening of the sliding sleeve cannot meet the expectations; the tubing is prone to erosion during fracturing because of has high requirements on the strength of the tubing; sand plugging is easy to occur near the packer; there are many restrictions on construction displacement; packer does not easily pass through the sliding sleeve;and the horizontal section of coiled tubing is difficult to extend. For shale gas wells with deep burial,long horizontal section,complex well trajectory and large scale of fracturing,this technology is not fully applicable,so it is necessary to continue exploring.
引文
[1]李士伦.天然气工程[M].北京:石油工业出版社,2008:109-117.LI Shilun.Natural gas engineering[M].Beijing:Oil industry press,2008:109-117.
[2]张怀文,张继春,胡新玉.水平井压裂工艺技术综述[J].新疆石油科技,2005,15(4):30-33.ZHANG Huaiwen,ZHANG Jichun,HU Xinyu.A review on fracturing technology of horizontal wells[J].Xinjiang Petroleum Science&Technology,2005,15(4):30-33.
[3]侯洪涛,邹群,段志刚,等.先进的多层压裂技术[J].国外油田工程,2007,23(2):7-10.HOU Hongtao,ZOU Qun,DUAN Zhigang,et al.Advanced multilayer fracturing technology[J].Foreign Oilfield Engineering,2007,23(2):7-10.
[4]程智远,刘志斌,张鹏,等.水平井裸眼分段压裂工具[J].石油科技论坛,2013,32(4):60-64.CHENG Zhiyuan,LIU Zhibin,ZHANG Peng,et al.Open hole fracturing tool for horizontal Wells[J].Oil Forum,2013,32(4):60-64.
[5]张鹏,高波,刘江斌,等.苏里格气田气井压裂效果评价方法[J].辽宁化工,2010,39(7):736-738.ZHANG Peng,GAO Bo,LIU Jiangbin,et al.Fracturing effect evaluation method of gas well in Sulige gas field[J].Liaoning Chemical Industry,2010,39(7):736-738.
[6]朱玉杰,郭朝辉,魏辽,等.套管固井分段压裂滑套关键技术分析[J].石油机械,2013,41(8):102-106.ZHU Yujie,GUO Chaohui,WEI Liao,et al.Analysis of key technology of casing cementing staged fracture sliding sleeve[J].China Petroleum Machinery,2013,41(8):102-106.
[7]MCGREGOR B,COX R,BEST J.Application of coiled tubing technology on a deep underpressured gas reservoir[C].SPE 38379,1997.
[8]廖开贵,李颖川,杨志,等.产水气藏气液两相管流动态规律研究[J].石油学报,2009,30(4):607-612.LIAO Kaigui,LI Yingchuan,YANG Zhi,et al.Study on the dynamic law of gas-liquid two-phase flow in water-producing gas reservoir[J].Acta Petrolei Sinica,2009,30(4):607-612.
[9]蔡文斌,李兆敏,张霞林,等.低渗透油藏水平井压裂理论及现场工艺探讨[J].石油勘探与开发,2009,36(1):80-85.CAI Wenbin,LI Zhaomin,ZHANG Xialin,et al.Fracturing theory and field technology of horizontal well in low permeability reservoir[J].Petroleum Exploration and Development,2009,36(1):80-85.
[10]赵铭,王伟佳.国外页岩气井连续油管固井滑套压裂完井方式研究[J].钻采工艺,2017,40(2):59-62.ZHAO Ming,WANG Weijia.Study on well completion method of coiled tubing cementing sliding sleeve fracturing in shale gas well[J].Drilling&Production Technology,2017,40(2):59-62.
[11]杨永青,王治华,王磊,等.无限级滑套压裂新工艺在苏里格气田的应用[J].钻采工艺,2015,38(1):62-64.YANG Yongqing,WANG Zhihua,WANG Lei,et al.The application of the new fracturing technology of infinite sliding sleeve in Sulige gas field[J].Drilling&Production Technology,2015,38(1):62-64.
[12]李建奇,杨志伦,陈启文,等.苏里格气田水平井开发技术[J].天然气工业,2011,31(8):60-64.LI Jianqi,YANG Zhilun,CHEN Qiwen,et al.Horizontal well development technology of Sulige gas field[J].Natural Gas Industry,2011,31(8):60-64.
[13]韩永亮,刘志斌,程智远,等.水平井分段压裂滑套的研制与应用[J].石油机械,2011,39(2):64-65.HAN Yongliang,LIU Zhibin,CHENG Zhiyuan,et al.Development and application of fracturing sliding sleeve for horizontal wells[J].China Petroleum Machinery,2011,39(2):64-65.
[14]钱斌,朱炬辉,李建忠.连续油管喷砂射孔套管分段压裂新技术的现场应用[J].天然气工业,2011,31(5):67-69.QIAN Bin,ZHU Juhui,LI Jianzhong.Field application of new fracturing technology of continuous tubing sandblasting perforation casing[J].Natural Gas Industry,2011,31(5):67-69.
[15]李梅,刘志斌,吕双,等.连续油管喷砂射孔环空分段压裂技术在苏里格气田的应用[J].石油钻采工艺,2013,35(4):82-84.LI Mei,LIU Zhibin,LYU Shuang,et al.The application of continuous tubing sandblasting perforation annulus fracturing technology in sulige gas field[J].Oil Drilling&Production Technology,2013,35(4):82-84.
[16]靳宝军,邢景宝,郑锋辉,等.连续油管喷砂射孔环空压裂工艺在大牛地气田的应用[J].钻采工艺,2011,34(2):39-41.JIN Baojun,XING Jingbao,ZHENG Fenghui,et al.Application of continuous tubing sandblasting perforation annulus fracturing technology in Daniudi gas field[J].Drilling&Production Technology,2011,34(2):39-41.
[17]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.LYU Xuanpeng,ZHOU Chengfu,CHEN Hui,et al.Application prospect of coiled tubing technology in shale gas exploration and development[J].Oil Field Equipment,2012,41(2):67-70.
[2]张怀文,张继春,胡新玉.水平井压裂工艺技术综述[J].新疆石油科技,2005,15(4):30-33.ZHANG Huaiwen,ZHANG Jichun,HU Xinyu.A review on fracturing technology of horizontal wells[J].Xinjiang Petroleum Science&Technology,2005,15(4):30-33.
[3]侯洪涛,邹群,段志刚,等.先进的多层压裂技术[J].国外油田工程,2007,23(2):7-10.HOU Hongtao,ZOU Qun,DUAN Zhigang,et al.Advanced multilayer fracturing technology[J].Foreign Oilfield Engineering,2007,23(2):7-10.
[4]程智远,刘志斌,张鹏,等.水平井裸眼分段压裂工具[J].石油科技论坛,2013,32(4):60-64.CHENG Zhiyuan,LIU Zhibin,ZHANG Peng,et al.Open hole fracturing tool for horizontal Wells[J].Oil Forum,2013,32(4):60-64.
[5]张鹏,高波,刘江斌,等.苏里格气田气井压裂效果评价方法[J].辽宁化工,2010,39(7):736-738.ZHANG Peng,GAO Bo,LIU Jiangbin,et al.Fracturing effect evaluation method of gas well in Sulige gas field[J].Liaoning Chemical Industry,2010,39(7):736-738.
[6]朱玉杰,郭朝辉,魏辽,等.套管固井分段压裂滑套关键技术分析[J].石油机械,2013,41(8):102-106.ZHU Yujie,GUO Chaohui,WEI Liao,et al.Analysis of key technology of casing cementing staged fracture sliding sleeve[J].China Petroleum Machinery,2013,41(8):102-106.
[7]MCGREGOR B,COX R,BEST J.Application of coiled tubing technology on a deep underpressured gas reservoir[C].SPE 38379,1997.
[8]廖开贵,李颖川,杨志,等.产水气藏气液两相管流动态规律研究[J].石油学报,2009,30(4):607-612.LIAO Kaigui,LI Yingchuan,YANG Zhi,et al.Study on the dynamic law of gas-liquid two-phase flow in water-producing gas reservoir[J].Acta Petrolei Sinica,2009,30(4):607-612.
[9]蔡文斌,李兆敏,张霞林,等.低渗透油藏水平井压裂理论及现场工艺探讨[J].石油勘探与开发,2009,36(1):80-85.CAI Wenbin,LI Zhaomin,ZHANG Xialin,et al.Fracturing theory and field technology of horizontal well in low permeability reservoir[J].Petroleum Exploration and Development,2009,36(1):80-85.
[10]赵铭,王伟佳.国外页岩气井连续油管固井滑套压裂完井方式研究[J].钻采工艺,2017,40(2):59-62.ZHAO Ming,WANG Weijia.Study on well completion method of coiled tubing cementing sliding sleeve fracturing in shale gas well[J].Drilling&Production Technology,2017,40(2):59-62.
[11]杨永青,王治华,王磊,等.无限级滑套压裂新工艺在苏里格气田的应用[J].钻采工艺,2015,38(1):62-64.YANG Yongqing,WANG Zhihua,WANG Lei,et al.The application of the new fracturing technology of infinite sliding sleeve in Sulige gas field[J].Drilling&Production Technology,2015,38(1):62-64.
[12]李建奇,杨志伦,陈启文,等.苏里格气田水平井开发技术[J].天然气工业,2011,31(8):60-64.LI Jianqi,YANG Zhilun,CHEN Qiwen,et al.Horizontal well development technology of Sulige gas field[J].Natural Gas Industry,2011,31(8):60-64.
[13]韩永亮,刘志斌,程智远,等.水平井分段压裂滑套的研制与应用[J].石油机械,2011,39(2):64-65.HAN Yongliang,LIU Zhibin,CHENG Zhiyuan,et al.Development and application of fracturing sliding sleeve for horizontal wells[J].China Petroleum Machinery,2011,39(2):64-65.
[14]钱斌,朱炬辉,李建忠.连续油管喷砂射孔套管分段压裂新技术的现场应用[J].天然气工业,2011,31(5):67-69.QIAN Bin,ZHU Juhui,LI Jianzhong.Field application of new fracturing technology of continuous tubing sandblasting perforation casing[J].Natural Gas Industry,2011,31(5):67-69.
[15]李梅,刘志斌,吕双,等.连续油管喷砂射孔环空分段压裂技术在苏里格气田的应用[J].石油钻采工艺,2013,35(4):82-84.LI Mei,LIU Zhibin,LYU Shuang,et al.The application of continuous tubing sandblasting perforation annulus fracturing technology in sulige gas field[J].Oil Drilling&Production Technology,2013,35(4):82-84.
[16]靳宝军,邢景宝,郑锋辉,等.连续油管喷砂射孔环空压裂工艺在大牛地气田的应用[J].钻采工艺,2011,34(2):39-41.JIN Baojun,XING Jingbao,ZHENG Fenghui,et al.Application of continuous tubing sandblasting perforation annulus fracturing technology in Daniudi gas field[J].Drilling&Production Technology,2011,34(2):39-41.
[17]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.LYU Xuanpeng,ZHOU Chengfu,CHEN Hui,et al.Application prospect of coiled tubing technology in shale gas exploration and development[J].Oil Field Equipment,2012,41(2):67-70.