摘要
煤储层物性特征是影响煤层气开发效果的重要方面和研究重点,以沁水煤田东南部岳城井田为工程背景,基于井田煤与煤层气地质、勘探开发及相关测试资料,采用煤层气地质理论及数理统计方法对井田3号煤储层物性特征进行研究。研究结果表明:岳城井田3号煤层为结构简单、破坏较轻、展布稳定的厚煤层;煤层的“生、储、盖”条件较好且地处甲烷带,煤层气含量及甲烷含量普遍较高;煤层孔裂隙系统发育且连通性好,渗透率高;煤储层压力及压力梯度值较低、能量弱,为低压(欠压)煤储层;煤对煤层气具有很强的吸附能力、吸附量大,具有良好的煤层气储集空间。
The physical property of coal reservoir is an important aspect and research focus of CBM development.Based on the engineering background of Yuecheng well-field in the southeast of Qinshui coalfield,based on the data of coal and CBM geology,exploration and development,and related tests in mine field,the physical properties of coal reservoir the No.3 coal reservoir in mine field are studied by using CBM geological theory and mathematical statistics.The research results show that mine field system the No.3 coal seam in Yuecheng is a thick coal seam with simple structure,light damage and stable distribution,and the coal seam has a good"source,reservoir and cap"condition and is located in the methane belt,the content of coal-bed gas and methane is generally high,the coal-bed pore-fracture system is well developed and well connected,the permeability is high,the pressure and pressure gradient of coal reservoir is low,the energy is weak,and the coal reservoir is low pressure(under pressure)coal has a strong adsorption capacity to coalbed methane,adsorption capacity is large,has a good coalbed methane storage space.
作者
申超
SHEN Chao(Gas Management and Utilization Branch of Jincheng Jinju Industrial Co.,Ltd.,Jincheng 048000,China)
出处
《煤》
2023年第5期17-21,共5页
Coal
基金
山西省科技重大专项(20181101013)。
关键词
岳城井田
沁水煤田
煤储层物性特征
煤层气
Yuecheng mine field
Qinshui coalfield
coal reservoir physical properties
CBM
作者简介
申超(1989-),男,山西晋城人,助理工程师,从事矿井煤与煤层气共采和矿井瓦斯防治方面的工作。
