煤层气干扰试井测试在保德区块产能分析中的应用研究  

Applied Research of CBM Interference Well Test for Capacity Analysis in Baode Block

作　　者：王卫东 Wang Weidong(Geological Exploration Institute,the First Exploration Bureau,CNACG,Handan,Hebei 056004)

机构地区：[1]中国煤炭地质总局第一勘探局地质勘查院,河北邯郸056004

出　　处：《中国煤炭地质》2021年第12期11-14,82,共5页Coal Geology of China

基　　金：国家科技重大专项“煤层气高效开发及开发指标优化研究”(2016ZX05042-002)。

摘　　要：为了探寻保德区块个体性低产的原因,在研究区选取均质、非均质性井组进行干扰试井测试,根据测试结果并利用井间连通性、压力恢复速率及目前地层压力等与井组产量的对应关系,进行分类分析,研究结果显示:影响该区煤层气产量的因素包括资源条件(含气质量)、开发条件(埋深压力渗透性)、工程因素(钻压排)等。均质性井组整体低产的原因主要是资源条件差、开发条件差。非均质性井组的低产原因主要是渗透率低,资源条件造成低产的可能性小,对这类井进行二次改造,有一定的提产潜力。To seek the causation of individual low capacity in the Baode block have selected homogeneous and inhomogeneous well groups carried out interference well tests in the study area.Based on tested results and take advantage of correspondence between inter-well connectivity,pressure recovery rate,current formation pressure and well group output to carry out category analysis.The result has shown that factors impact CBM output in the area including resource conditions(methane containing qualities),exploitation conditions(buried depth,reservoir pressure and permeability),as well as engineering factors(drilling,fracturing and drainage)etc.The causation of overall homogeneous well group low capacity has mainly poor resource conditions and exploitation conditions;for inhomogeneous well group mainly from low permeability,while possibility from resource conditions are little,thus to carry out secondary remolding for those wells have certain capacity increasing potential.

关 键 词：保德区块 干扰试井 井间连通性 渗透率 地层压力 产气量 

分 类 号：P618.13[天文地球—矿床学]