甲烷在煤层水中溶解度的实验研究  

EXPERIMENNTAL STUDY OF THE SOLUBILITY OF METHANEIN COALBED WATER

作　　者：傅雪海[1] 秦勇[1] 杨永国[1] 彭金宁[1] 韩训晓[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《天然气地球科学》2004年第4期345-348,共4页Natural Gas Geoscience

基　　金：国家重大基础研究发展规划项目(编号:2002CB211704)资助.

摘　　要：基于山西沁水盆地不同矿区煤层水样的甲烷溶解度实验,探讨了温度、压力和地层水矿化度及其离子组成对甲烷溶解度的影响。煤层水中的有机质使甲烷的溶解度普遍偏高。低温度、低压力时,矿化度对甲烷溶解度的影响较显著。当地层水离子组成中Ca2+、Mg2+含量高时,甲烷溶解度低。印支期和燕山期温度和压力高,水溶甲烷多,煤层气随水径流逸散量大;而现今温度和压力较低,水溶甲烷少,水径流缓慢,煤层气随水径流逸散量少。Based on experiments of the solubility of methane in coalbed water of different minefields of Qinshui basin in Shanxi Province, the influences of temperature, pressure, total salinity and its hydronium composes on the solubility of methane in coalbed water were discussed. They were suggested that organic matter in coalbed water leads usually to increase of the solubility of methane, that the influence of total salinity on the solubility of methane is marked when temperature and pressure are lower, that the solubility of methane reduces with the increases of Ca^(2+ )and Mg^(2+)-content and that the more soluble methane in coalbed water was in Indo-Chinese and Yanshan epoch because of high temperature and pressure the more coalbed methane-escaping was with water runoff and the less soluble methane in coalbed water is nowadays because of low temperature and pressure the less coalbed methane-escaping is with slow water runoff.

关 键 词：煤层水 甲烷 溶解度 实验 

分 类 号：TE133.1[石油与天然气工程—油气勘探]