一种煤气井产出剖面热式气体流量计的设计  

Design of Thermal Gas Flowmeter in Layered Gas Prodctivity Tests for CBM Wells

作　　者：李雷[1] 郑惠峰 王明伟[1] 刘兴斌[1] 吕建华[1] 关永彪 

机构地区：[1]大庆油田有限责任公司测试技术服务分公司,黑龙江大庆163453 [2]中国石油集团大庆钻探工程公司测井公司,黑龙江大庆163412 [3]大庆油田有限责任公司采油二厂,黑龙江大庆163453

出　　处：《石油管材与仪器》2018年第1期17-20,共4页Petroleum Tubular Goods & Instruments

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目(2010E-2205)资助课题

摘　　要：为解决低产煤气井分层产气量测试难题,设计并实现了一种井下恒流式热式气体流量计。阐述了热式气体质量流量计的测量原理,进行了热式气体流量计的总体设计,研制了现场试验样机,通过开展模拟井试验表明了恒流式热式气体质量流量计用于井下气体流量测量的可行性,测量小流量下限可达50 m^3/d,测试精度高,可达到煤层气井测试需求。In order to solve the problem of layered gas productivity tests in the low yielding CBM wells, a constant current thermal mass flowmeter is designed. The measurement principle of the flowmeter is described. The overall design of the flowmeter is carried out, and the prototype is developed. By carrying out a large number of indoor dynamic experiments, the measurement feasibility of thermal gas flowmeter for downhole gas flow is proved well. The lower limit of measurement of the flowmeter is 50 m3/d, so its higher test precision can reach the CBM well test requirements.

关 键 词：煤层气井 热式气体质量流量计 气体流量测量 

分 类 号：P631.81[天文地球—地质矿产勘探]