鄂尔多斯盆地杭锦旗地区太原-山西组聚煤规律分析  

Analysis on Coal Accumulation Regularity of Taiyuan-Shanxi Formation in Hangjinqi Area, Ordos Basin

作　　者：张悦 李建[2] ZHANG Yue;LI Jian(Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China;College of Earth Science,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学沉积地质研究院,成都610059 [2]成都理工大学地球科学学院,成都610059

出　　处：《煤炭技术》2021年第9期67-70,共4页Coal Technology

摘　　要：太原-山西组是鄂尔多斯盆地北部上古生界最重要的产煤地层,基于钻井岩心观察描述、测井资料分析、煤层厚度统计,对杭锦旗地区太原-山西组的沉积环境、聚煤规律进行研究。结果表明,太原组主要为扇三角洲平原亚相,山西组主要为三角洲平原沉积,煤层多存在于泥炭沼泽环境;太原-山西组煤层累计厚度大于20 m,由西向东变薄,聚煤中心位于锦77井-召66井-同37井一线和锦60井周缘,且沿三角洲平原分布。Taiyuan-Shanxi formation are the most important strata about coal producing of Upper Paleozoic in northern Ordos basin. Based on the observation and description of drilling cores, the analysis of well logging data and statistics of coal seam thickness, the sedimentary environment and coal accumulation rule of Taiyuan-Shanxi formation in Hangjinqi area were studied. The results indicates that Taiyuan formation mainly develops fan delta plain, while the Shanxi formation is mainly delta plain, and the coal seams mostly exist in peat swamp environment. The accumulated thickness of the coal seam in Taiyuan-Shanxi formation is greater than 20 m, and it becomes thinner from northeast to southwest. The coal accumulation center is located in the line of well Jin-77, well Zhao-66 and well Tong-37 and the periphery of well Jin-60, and it is distributed along the delta plain.

关 键 词：杭锦旗 太原组 山西组 沉积环境 聚煤规律 

分 类 号：P618[天文地球—矿床学]