澳大利亚煤层气含气量测试方法及解吸分析——以G盆地二叠系煤为例  

Measuring Method of CBM Gas Content in Australia and Analysis of Desorption——Taking Permian Coal Seam in G Basin for example

作　　者：谷峰[1] 张滨海 李乐忠[1] 葛岩 

机构地区：[1]中海石油气电集团有限责任公司技术研发中心,北京100007 [2]中海油研究总院,北京100007 [3]中海石油能源发展采油技术服务公司钻采研究院,天津300457

出　　处：《中国煤层气》2014年第1期30-35,共6页China Coalbed Methane

摘　　要：以G盆地为例,介绍澳大利亚现场采用的美国矿业局"USBM"方法的工作流程。通过与国内运用的煤层含气量测试方法进行对比,分析以全尺寸岩心进行试验对测量结果的影响,并利用解吸实验结果研究煤层解吸特征。研究表明G盆地二叠系煤层解吸率普遍大于80%,吸附时间多数小于1天。通过对不同时段解吸气组分变化的分析认为,在煤层含气量较低的情况下,含气量和解吸气组分是影响解吸速率快慢的主要原因。Taking G Basin for example, the paper introduces the workflow of USBM, a method devel oped by for measuring coal gas content used in Australia. Trough comparing with the method used in Chi na, the impact of fullsize cores for the measurement for gas content is analyzed, and the results of the desorption test are used to studies the characteristics of coal seam desorption. The research indicates that the rate of gas desorption in Permian Coal Seam of G Basin is more than 80%, and the adsorption times are mostly shorter than 1 days. The studies of component of desorption gas in different periods show that in coal seams with low gas content, the gas content and component of desorption gas are the main factors affecting the velocity of desorption.

关 键 词：澳大利亚煤层气含气量全尺寸岩心 解吸特征吸附时间 

分 类 号：P618.11[天文地球—矿床学]