煤田地质与勘探2016，Vol.44Issue(4)：69-72,4.DOI:10.3969/j.issn.1001-1986.2016.04.013
沁南-夏店区块煤储层等温吸附特征及含气量预测
Isothermal adsorption characteristics of coal reservoir and its gas content prediction in Qinnan-Xiadian block of Qinshui basin
摘要
Abstract
Adsorption capacity of coal is a significant parameter for gas-bearing measurement and development potential of coal reservoir.the content prediction method of coal bed methane (CBM) based on Langmuir equation was established, Ad-sorption capacity and gas content distribution in coal seam No.3 reservoir in the study area was revealed. It is shown that the main coal type of No.3 coal seam in target area are meagre coal and anthracite coal. The Langmuir volume of air dried coal samples is between 18.15 m3/t and 34.75m3/t, with a mean value of 29.36 m3/t; Langmuir pressure is between 1.47 MPa and 2.71MPa, with a 2.03 MPa mean value. The pressure gradient of coal reservoir is between 0.11MPa/100 m and 1.06 MPa/100 m, with a mean value of 0.49 MPa/100 m. The pressure of coal reservoir increase with burial deepth; and gas saturation of coalbed is under-saturation. According to Langmuir equation, the content prediction method of coal bed meth-ane (CBM) was established, and the gas content in coal seam No.3 reservoir in the study area was predicted. The result show that, the gas content in coal seam No.3 reservoir in the study area is between 2.87 m3/t and 24.63 m3/t, with a mean value of 13.78 m3/t, the gas content increases with burial deepth and it is lower than southern Qinshui Basin. The gas content distribu-tion of coal reservoir is mainly controlled by generating, storing and preserving.关键词
煤储层/Langmuir 体积/Langmuir 压力/含气量/沁南-夏店区块Key words
coal reservoir/Langmuir volume andLangmuir pressure/gas content/Qinnan-Xiadian Block分类
矿业与冶金引用本文复制引用
朱庆忠,孟召平,黄平,何旭龙,杨延辉,张永平..沁南-夏店区块煤储层等温吸附特征及含气量预测[J].煤田地质与勘探,2016,44(4):69-72,4.基金项目
国家自然科学基金项目(41372163，41172145)；国家科技重大专项项目(2016ZX05064，2016ZX05067)；2014年度山西省煤基重点科技攻关项目(MQ2014-01，MQ2014-12)及山西省煤层气联合研究基金资助项目(2014012001)@@@@National Natural Science Foundation of China (41372163，41172145)；National Science and Technology Major Project (2016ZX05064，2016ZX05067)；Key Scientific and Technology Project of CBM Foundation in Shanxi of 2014(MQ2014-01，MQ2014-12)；Shanxi Provincial Basic Research Program-Coal Bed Methane Joint Research Foundation (2014012001) （41372163，41172145）
