煤层气井排采自动化监测与控制关键仪器设计  

Design of the key instruments for automatic monitoring and control of production in CBM well

作　　者：邹宇清 赵凤坤 黄勇 王波 

机构地区：[1]中石油煤层气有限责任公司,北京100028 [2]中石油煤层气有限责任公司韩城分公司,陕西韩城715409

出　　处：《煤田地质与勘探》2015年第6期49-53,共5页Coal Geology & Exploration

基　　金：国家科技重大专项项目(2011ZX05038)

摘　　要：在煤层气井排采自动化推进过程中,存在动液面不能精确测量、产气量精细控制难度大、间歇产水且含煤粉测量误差大等问题。为解决上述问题,设计了新型自动液面测试仪,显著提高了煤层气井动液面的测量精度,经现场验证测量误差在2 m以内;结合煤层气产量低现象,改进了小阀芯气体调节阀,实现了产气量的精细控制;参照人工计量方式,设计了煤层气水计量装置,经现场验证误差小于3%。排采自动化关键仪器的设计和现场验证,满足煤层气现场生产需求,为实现煤层气井排采自动化提供了基础保障。In the process of promoting automatic production of CBM(coalbed methane) well, dynamic liquid level, gas production rate and water production rate are difficult to measure accurately. In order to solve these problems, the automatic liquid level tester is designed, improving significantly the measurement precision of the dynamic fluid level in CBM wells. Field verification showed that the deviation was less than 2 meters. In combination with the low gas production, the regulating valve with small plug was improved, and the fine control of gas production was realized. The device for CBM well water metering is designed referring to the manual measurement method, and the error is less than 3 percent. This equipment meets the demand of production site, provides the basic guar-antee for automatic production of CBM well.

关 键 词：煤层气 自动化 仪器 设计 验证 

分 类 号：P618.11[天文地球—矿床学]