中国煤层气勘探开发技术研究进展

我国煤层气勘探开发工作走过了十多年的探索历程,大致可以分为三个阶段：技术引进阶段、勘探评价阶段、开发试验及探索研究阶段。目前,制约煤层气商业开发的瓶颈技术问题在于寻找煤层气富集高渗区、提高煤层气产能的开发工艺技术。本文将着重介绍我国在煤层气勘探开发技术方面的研究进展,主要包括煤层气资源评价和区块优选评价技术、钻井技术、完井工艺技术、压裂工艺技术、注CO2增产技术、煤层气地球物理探测技术、煤层气井抽放技术、煤层气生产和评价技术等等。同时,提出了今后我国煤层气勘探开发技术存在的问题和发展趋势。

Progress in China's CBM Exploration and Exploitation Technical Researches

Approximately,there are three stages can be divided during te n more years exploring of China's CBM exploration and exploitation:technology a cquisition stage,exploration assessment stage and exploita tion testing and re searching stage.At pre sent,the technical bottlenecks of CBM com mercial deve lopment are in looking for CBM en richment and high percolation areas,rais in g the exploitation technological level of CBM productive capacity.The paper emp hatically introduces the country's research progress on CBM exploration and expl oitation techniques,mainly including CBM resource assessment and district opti mum seek ing assessment,drilling,well completion,fracturing,increase product ion by CO 2 injecting,CBM geo physical prospecting,CBM withdrawal through mines,CBM p roduction and assessment and so on.More over,the paper put forward ex isting prob lems and development trends in the country's CBM exploration and exploit a tion technology.