煤层气生成与煤层气富集 Ⅱ.有效生气阶段生气量的估算  

GENERATION AND ACCUMULATION OF COALBED METHANE ⅡESTIMATION OF GAS YIELD IN EFFECTIVE GASGENERATING STAGE

作　　者：秦勇[1] 桑树勋[1] 刘焕杰[1] 范炳恒[1] 韦重韬[1] 

机构地区：[1]中国矿业大学资环学院

出　　处：《煤田地质与勘探》1998年第2期19-21,共3页Coal Geology & Exploration

基　　金：煤炭科学基金

摘　　要：煤层的生气条件主要通过有效阶段生气量来影响煤层气的富集。有效阶段生气量取决于有效生气阶段的起止煤级和煤中原始有机质的丰度及其组成。本文给出了估算有效阶段生气量的基本公式，重点讨论了煤中原始有机质的丰度和组成的恢复方法，并以沁水盆地南部主要矿区３号和１５号煤层为例，对有效阶段生气量进行了估算。The gasgenerating conditions of coal bed have influence on the accumulation of coalbed mainly by the gas yield in effective gasgenerating stage.The gas yield in effective stage is dependent on the initial and terminal coal ranks of the effective stage,as well as the original abundance and composition of organic matter in coal.In this paper,a fundamental formula to estimate the gas yield in effective gasgenerating stage is presented,and the recovery procedure to recover the original abundance and composition of organic matter in coal is discussed in detail.No.3 and 15 seams of the main mining district in the southen Qinshui Basin,Shanxi,are used as examples to estimate the gas yield in effective stage

关 键 词：煤层气 有效阶段 生气量 计算方法 天然气 

分 类 号：P618.130.1[天文地球—矿床学] P618.130.2[天文地球—地质学]