煤田地质与勘探2017，Vol.45Issue(2)：22-26,5.DOI:10.3969/j.issn.1001-1986.2017.02.004
盘江地区晚二叠世成煤环境与煤储层特征
The coal forming environment and coal reservoir characteristics of Late Permian in Panjiang area
摘要
Abstract
Guizhou Panjiang area is not only one of the largest coal industrial bases, but also important area for coalbed methane exploration and development in south China. To reveal the main coal forming environment of Longtan Formation in Panjiang area, paleosalinity and sulfur content of main coal were studied with coal petrology and sedimentology. In addition, the influence of coal accumulating environment on the properties of coal was dis-cussed. There are some findings: first the main coals have rich vitrinite and high V/I, the vertical change of V/I is smaller- larger- smaller; Second, sulfur content in the lower part of Longtan Formation is high (more 3%), and in the upper it is 1% on average. These show that the coal forming environment may have experienced partial dry - wet - partial dry evolution process, and changed from the salting lagoon to the freshing lagoon due to great amount of rainfall. The good linear relationships between ash content, porosity and V/I indicate that the coal forming envi-ronment has certain effect on the physical properties of coal reservoirs.关键词
盘江地区/成煤环境/显微组分/古盐度/硫分Key words
Panjiang area/coal forming environment/maceral/paleosalinity/sulfur content分类
天文与地球科学引用本文复制引用
杨敏芳,鲁静,孙斌,王金友..盘江地区晚二叠世成煤环境与煤储层特征[J].煤田地质与勘探,2017,45(2):22-26,5.基金项目
国家科技重大专项项目(2011ZX05033) （2011ZX05033）
国家自然科学基金面上项目(41472131) （41472131）
教育部新世纪优秀人才项目(2013102050020) National Science and Technology Major Project(2011ZX05033) （2013102050020）
The General Program of the National Natural Science Foundation of China(41472131) （41472131）
New Century Excellent Talents Fund of Chinese Ministry of Education(2013102050020) （2013102050020）
