盘江地区晚二叠世成煤环境与煤储层特征
第45卷 第2期
煤田地质与勘探 Vol. 45 No.2 2017年4月 COAL GEOLOGY & EXPLORA TION Apr . 2017
收稿日期: 2016-01-06
基金项目: 国家科技重大专项项目(2011ZX05033)；国家自然科学基金面上项目(41472131)；教育部新世纪优秀人才项目(2013102050020)
Foundation item ：National Science and Technology Major Project(2011ZX05033)；The General Program of the National Natural Science Foundation of China(41472131)；New Century Excellent Talents Fund of Chinese Ministry of Education(2013102050020)
第一作者简介: 杨敏芳(1979—)，女，河北保定人，博士，从事煤层气地质研究工作. E-mail ：yangmf69@https://www.360docs.net/doc/578488745.html,
引用格式: 杨敏芳，鲁静，孙斌，等. 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.
YANG Minfang ，LU Jing ，SUN Bin ，et al. The coal forming environment and coal reservoir characteristics of Late Permian in Panjiang area[J]. Coal Geology & Exploration ，2017，45(2)：22–26. 文章编号: 1001-1986(2017)02-0022-05
盘江地区晚二叠世成煤环境与煤储层特征
杨敏芳1，鲁 静2，孙 斌1，王金友3
(1. 中国石油勘探开发研究院廊坊分院，河北 廊坊 065007；2. 中国矿业大学(北京)地球科学与测绘工
程学院，北京 100083；3. 中国石油渤海钻探工程公司第二录井分公司，河北 廊坊 065007) 摘要: 贵州盘江地区是我国南方最大的煤炭工业基地之一，也是南方煤层气勘探开发的重要地区。为了
揭示该区龙潭组各主力煤层聚煤环境与煤储层特征，应用煤岩学、沉积学等理论和方法，对各主力煤层
的煤岩、煤质和古盐度等特征进行了分析，探讨了聚煤环境及其对主力煤层煤岩、煤质及煤储层物性的
影响。结果表明，主力煤层显微组分以镜质组为主，镜惰比较高，镜惰比在垂向上呈现变小–变大–变小
趋势；龙潭组下段的硫分质量分数高(＞3%)，而中上段硫分含量平均在1%左右。研究表明该区成煤环
境可能经历了偏干燥—潮湿—偏干燥的演化过程，且降雨量充沛使成煤环境由咸化泻湖转为淡化泻湖。
镜惰比和煤的灰分含量、孔隙度有较好的线性关系，说明成煤环境对煤岩、煤质及煤储层物性影响明显。
关 键 词：盘江地区；成煤环境；显微组分；古盐度；硫分
中图分类号：P618.11 文献标识码：A DOI: 10.3969/j.issn.1001-1986.2017.02.004
The coal forming environment and coal reservoir characteristics of Late Permian in
Panjiang area
Y ANG Minfang 1, LU Jing 2, SUN Bin 1, W ANG Jinyou 3
(1. Langfang Branch , PetroChina Exploration and Development Research Institute , Langfang 065007, China ;
2. College of Geoscince and Surreying Engineering , China University of Mining and Technology ,
Beijing 100083, China ; 3. Branch of the Sencond Mudloging of CNPC Bohai Drilling Engineering Company
Limited , Langfang 065007, China )
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.
Keywords: Panjiang area; coal forming environment; maceral; paleosalinity; sulfur content
形成于泥炭沼泽环境中的煤层作为一种特殊的
沉积岩，不但为我们提供了能源矿产资源，还为我们
记录了丰富的地质特征演化信息[1]。贵州盘江地区是
我国南方煤炭资源最丰富的地区，是长江以南最大的煤炭工业基地之一，对其研究程度相对较高。但前人研究内容侧重于构造特征[2]、含煤性[3-4]、沉积相[5]、煤岩煤质特征[6]等方面。而对主力煤层的成煤环境演化特征及与煤岩煤质特征的关系研究甚少[7]。 万方数据