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毕节市岔河区块6#煤储层特征分析及有利区评价

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基于煤炭地质勘查,对岔河向斜南翼6#煤储层特征及有利区进行了研究.分析认为:该区块主力煤层6#煤层厚度较大,平均厚度为5.92 m;煤层气组分以CH4为主,该煤层平均含气量为20.48 cm3/t,煤层含气潜力较大,6#煤层煤厚、含气量分布特征受次级构造影响很大.选取煤层单层厚度及埋深、含气量、煤体结构四项指标,初步圈定了煤层气有利勘探区,其中,一类有利区面积为38.63 km2,二类有利区面积为36.44 km2,煤层气资源量122.7亿m3,资源丰度为1.63亿m3/km2.研究表明该区块具有一定的有利勘探面积,资源量较为丰富,适合进一步开展煤层气勘探工作.
Analysis on 6#Coal Reservoir Features and Favorable Exploration Area Evaluation in Chahe Block of Bijie City,Guizhou
Based on coal geological exploration,it studies on 6#coal reservoir features and favorable explora-tion area.The analysis considered that the principal 6# coal seam is rather thick in Chahe block with an average of 5.92 m,the major component of coal-bed gas is CH4.The average CBM content of the principal coal seams is 20.48 cm3/t,which dominated by CBM.The different structural positions of Chahe Syncline have a great in-fluence on the distribution characteristics of coal thickness and the gas content of 6# coal seam.On the bases of comprehensive analysis,the CBM favorable exploration areas were preliminarily delineated.Among them,the acreage of the most favorable and the second favorable area respectively is 38.63 km2,36.44 km2.The amount of coalbed gas resources is 122.70 million cubic meter,and the resource abundance is 1.63 million m3/km2.The research shows that this block has a certain favorable exploration area and abundant resources,which is suitable for further CBM exploration.

6#coal reservoirThicknessBurial depthGas-bearing potentialCoal structure

李臣臣、崔雪璐、尚雪芬、赵楠楠

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济宁经济技术开发区高级中学,山东 济宁 272000

6#煤储层 厚度 埋深 含气量 煤体结构

2024

贵州地质
贵州省地质调查院,贵州省地质学会

贵州地质

影响因子:0.504
ISSN:1000-5943
年,卷(期):2024.41(3)