煤层气技术可采资源量预测方法  

PREDICTION METHODS OF RECOVERABLE COALBED METHANE RESOURCES

作　　者：张新民[1] 韩保山[1] 李建武[1] 董敏涛[1] 

机构地区：[1]煤炭科学研究总院西安分院

出　　处：《天然气工业》2005年第1期8-12,共5页Natural Gas Industry

基　　金："973"国家重点基础研究发展规划项目"中国煤层气成藏机制及经济开采基础研究"(2002CB11700)资助~~

摘　　要：文章提出了新的煤层气资源量分类系统,建立了利用气藏数值模拟技术预测煤层气井最终可采量和 利用损失分析法估算可采量这样两种预测煤层气技术可采资源量的方法。在此基础上指出:以煤层气富气区(带) 为评价单元,准确地确定关键煤储层参数(煤层埋深、厚度、气含量、储层压力、渗透率);运用气藏数值模拟技术和 损失分析两种方法,分别计算处于不同勘探开发程度的煤层气富气区(带)的技术可采资源量;是现阶段在我国进 行煤层气资源可采性定量评价的有效技术途径。Through setting up a new classification system of coalbed methane resources, two methods of predicting recoverable coalbed methane resources were put formward, i. e. to predict the ultimate recovery of coalbed methane well by reservoir numerical simulation technique and to estimate the recovery by loss analysis method: and, by taking the coalbed methane-rich zones being in different exploration and development stages as assessment units, their recoverable coalbed methane resources were calculated respectively by use of the two methods on the basis of determining exactly the key coal reservoir parameters, such as coal-buried depth, coal thickness, methane content, reservoir pressure and permeability. Therefore they are the effective ways of evaluating quantitatively the recoverable coalbed methane resources in China at present.

关 键 词：煤层气 可采资源量 气藏数值模拟 损失分析法 预测方法 

分 类 号：TD84[矿业工程—煤矿开采]