煤层气井常规修井作业工艺

Conventional Workover Technology For Coalbed Gas Wells

在煤层气排采阶段修井工作占据极其重要的位置,在修井作业前需要确定井下故障,以产液作为故障类别划分与判定的依据,对于井下常见的两类故障需要回顾排采历史,结合相关数据编制修井方案,完成标准化作业井场布置任务。本文首先分析井下故障类型、引出泵型选择内容,最后介绍修井作业过程。

The workover work occupies an extremely important position in the CBM drainage and production stage.Before the workover operation,it is necessary to determine the downhole faults and take the liquid production as the basis for the classification and determination of fault categories.For the two common downhole faults,it is necessary to review the drainage and production history,prepare the workover scheme in combination with relevant data,and complete the task of standardized operation well pad layout.This paper first analyzes the downhole fault type and the selection of extraction pump type,and finally introduces the workover operation process.