煤层气单相注入/压降试井方法评价

Evaluation on Single Phase Injection/Falloff Test Well Method of CBM

煤储层参数是决定一个区块煤层气资源开发、利用的重要指标,本文介绍了通过煤层气试井获取煤储层的评价参数的方法并结合实际测试经验对煤层气试井的设计,工艺技术、关键过程控制、测试成果及解释等重要环节分析研究,提出了注入/压降测试的优缺点及适应性,建议继续深入发展煤层气不同开发阶段注入/压降试井方法,注意对多相流影响的作用。

Coal reservoir parameters are important indicators of development and utilization of CBM resources. The article introduced how to achieve the evaluation parameters for coal reservoir by test well and analyzed the test well design, techniques, key process control, test results and interpretation on the basis of actual tests. The paper also presented strengths/weaknesses and adaptability of the injection/falloff test. Finally, it suggested further research on the injection/falloff test at the different stages of development and more attention to the influence of multiphase flow.