古交区块煤层气L型水平井排采工艺及配套技术研究  

Research on Drainage Technology and Matching Technology of L-type Horizontal Wells for Coalbed Methane in Gujiao Block

作　　者：张晓飞[1] 刘天授 王秀海 王德桂[1] 刘征 张杰伟[1] 李东良 ZHANG Xiao-fei;LIU Tian-shou;WANG Xiu-hai;WANG De-gui;LIU Zheng;ZHANG Jie-wei;LI Dong-liang(Gujiao Project Department,China United Coalbed Methane Co.,Ltd.,Gujiao 030200,China;Gujiao Guosheng Hengtai Coalbed Methane Development and Utilization Co.,Ltd.,Gujiao 030200,China)

机构地区：[1]中联煤层气有限责任公司古交项目部,山西古交030200 [2]古交市国盛恒泰煤层气开发利用有限公司,山西古交030200

出　　处：《煤炭技术》2021年第9期51-54,共4页Coal Technology

摘　　要：由于L型水平井具有全角变化率大、井斜角大、斜井段长且水平位移大的特点,加上古交区块煤储层水平段吐砂、吐煤粉严重,单井产水量小(小于1 m^(3)/d),排采过程中易卡泵、易气锁等特征,为后期排采带来困难。通过已有21口L型水平井的排采经验,摸索出了适宜古交区块煤储层特征的以抽油机加新型斜井泵工艺为主体,配套防偏磨、防气锁、柱塞泵循环洗井、负压捞砂等技术的排采工艺,取得一定成效。Because of the characteristics of large change rate of full angle, large inclined angle, long inclined section and large horizontal displacement, L-type horizontal well has the characteristics of sand discharge and coal powder discharge in the horizontal section of block coal reservoir in Gujiao block, small water yield of single well(less than one cubic meter one day), easy gas lock during the process of production discharge, which brings great difficulties for later production. Through the experience of 21 L-type horizontal wells, a set of technology of drainage and production suitable for the characteristics of block coal reservoir in Gujiao block is explored.

关 键 词：煤层气 L型水平井 排采工艺 斜井泵 古交区块 

分 类 号：TE19[石油与天然气工程—油气勘探]