项目名称： 两淮煤田不同变质作用机制下煤储层精细物理化学结构定量表征及其地质意义

项目编号： No.41502152

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 吴盾

作者单位： 中国科学技术大学

项目金额： 22万元

中文摘要： 华北南部两淮煤田古生代形成的石炭二叠系含煤地层历经多期地质构造运动和岩浆侵入的改造作用，在不同变质作用机制下形成了多种多样的煤质类型。近几年来，两淮煤田煤层气勘探实物和科研工作相继开展，然而未取得理想成果。究其原因是仅考虑了煤层含气量高、煤层厚度大等必要条件，特别忽视了煤储层物理化学精细结构发育的充分条件。本项目选择两淮煤田不同变质作用机制下煤储层为研究对象，根据两淮煤田区域地质构造演化史，定向采集不同变质作用类型煤岩样品，利用高精度精密测试仪器开展了煤精细物理化学结构定量表征技术研究。本项目的开展立在：（1）阐明两淮煤田不同变质类型煤时间-空间分布特征；（2）厘清两淮煤田煤储层物化特性；（3）建立两淮煤田煤储层精细物理化学结构定量表征数字化信息源。基于此，本项目研究成果对发展不同变质作用机制下煤储层精细物化结构定量表征技术及完善区域煤层气成藏理论具有重要的科学意义。

中文关键词： 煤储层；煤变质作用；精细结构；定量表征；地质意义

英文摘要： The Carboniferous-Permian coal-bearing strata of LiangHuai Coalfield located in the southern of north China was formed in the Paleozoic Era, which was experienced multiphase reformation effect of tectonic movement and igneous intrusion, producing various coal types under the different metamorphosed mechanism. In recent years, it is deemed that LiangHuai Coalfield is acted as one of the important district of coalbed methane exploration and development research in China, which has experienced a series of physical exploration engineering and scientific research work. However, the actual value is not very ideal. The reason is that because of determining the location of drilling hole and objective coal seam, only considering these necessary conditions such as the high content of coalbed methane and the thickness of coal seam, the sufficient condition, namely physicochemistry fine structure of coal reservoir, was ignored. The object of this study is derived from different metamorphosed degree of coal reservoir selected from LiangHuai Coalfield. On the basis of the evolution of regional geological structure, numerous coal samples of different rank will be directionally collected. By the application of high precision testing instruments, the fine physical and chemical structure of coal will be quantitatively determined. The object of this work: (1) indicating the characteristics of time-space distribution of different metamorphosed coal; (2) clarifying the physical and chemical properties of coal reservoir from LiangHuai coalfield; (3) establishing the digital information of quantitative characterization of fine physical and chemical structure of coal reservoir from LiangHuai coalfield. On the basis of above these observation, this project is of important significance in developing quantitative characterization techniques of different ranked coal reservoir, and in better understanding the reservoir and enrichment theory of district coalbed methane.

英文关键词： Coal reservoir;Coal metamorphism;Fine structure ;Advanced characterization;Geological significance