毕节市岔河区块6#煤储层特征分析及有利区评价  

Analysis on 6#Coal Reservoir Features and Favorable Exploration Area Evaluation in Chahe Block of Bijie City,Guizhou

作　　者：李臣臣 崔雪璐 尚雪芬 赵楠楠 LI Chen-chen;CUI Xue-lu;SHANG Xue-fen;ZHAO Nan-nan(Jining Economic and Technological Development Zones High School,JiNing 272000,Shandong,China)

机构地区：[1]济宁经济技术开发区高级中学,山东济宁272000

出　　处：《贵州地质》2024年第3期285-292,共8页Guizhou Geology

摘　　要：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CH 4为主,该煤层平均含气量为20.48 cm^(3)/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 km^(2),二类有利区面积为36.44 km^(2),煤层气资源量122.7亿m^(3),资源丰度为1.63亿m^(3)/km^(2)。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。Based on coal geological exploration,it studies on 6#coal reservoir features and favorable exploration 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 CH 4.The average CBM content of the principal coal seams is 20.48 cm^(3)/t,which dominated by CBM.The different structural positions of Chahe Syncline have a great influence 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 km^(2),36.44 km^(2).The amount of coalbed gas resources is 122.70 million cubic meter,and the resource abundance is 1.63 million m^(3)/km^(2).The research shows that this block has a certain favorable exploration area and abundant resources,which is suitable for further CBM exploration.

关 键 词：6#煤储层 厚度 埋深 含气量 煤体结构 

分 类 号：P618.13[天文地球—矿床学]