基于等温吸附法解析试验对非洲卡鲁Karoo盆地煤层气地质特征与勘探潜力的研究
投稿时间:2018-04-12  修订日期:2018-11-04  点此下载全文
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作者单位E-mail
李金珊 北京科技大学土木与资源工程学院北京 lijinshan2009@126.com 
朱维耀 北京科技大学土木与资源工程学院北京  
基金项目:中非发展资助
中文摘要:为揭示非洲卡鲁盆地煤层气储层的地质特征和勘探潜力,采用等温吸附解析试验对卡鲁盆地煤层气储层及含气量的经济评价研究,通过C3钻井和C4、C6钻井勘探煤岩岩芯取样,对取得的煤岩芯样品进行等温解析试验,通过试验结果析发现,随着温度增高呈持续上升的线性趋势,实验显示解析30天以后的煤层岩芯,释放煤层气呈稳定持续上升的线性趋势,当煤层温度达到47°时,吸附释放最高,随着温度增高呈持续上升的线性趋势。煤层顶底板之间有两套煤层,中间又是一套含水砂岩,煤岩显微组分平均含量在80%以上,煤层成熟度高,渗透率高,属气肥煤阶段,煤层含气量较高具有勘探潜力。
中文关键词:卡鲁盆地  煤层气  等温吸附  含气量  经济评价
 
The isothermal adsorption characteristics of coalbed methane reservoir in Zimbabwe
Abstract:For For Zimbabwe carew basin coalbed methane reservoir geological characteristics, basin of salomon kalou and air content of economic evaluation of coalbed methane reservoir, drilling drilling through the C3 and C4 and C6, coal and rock samples, the isothermal adsorption experiment of coal core samples, coal core analytic linear trend of increased as temperatures continue to rise.Experiments show that resolution after 30 days of coal core, release of coalbed methane linear trend of rising steadily, coal seam adsorption release the highest temperature reached 47 °linear trend of increased as temperatures continue to rise.Between the coal seam roof and floor there are two sets of coal seam, the middle is a set of water-bearing sandstone, coal and rock maceral content in more than 80% on average, high maturity of coal seam, high permeability, belongs to the stage air fertilizer coal, coal bed gas content is higher.
keywords:Karoo basin  isothermal adsorption  gas content  Air content  Economic evaluation
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