焦坪矿区南部侏罗系煤层气赋存规律及资源开发潜力评价

发布时间：2018-02-23 05:49

本文关键词： 煤层气焦坪矿区侏罗系煤层赋存规律资源潜力评价　出处：《西安科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：地面煤层气开发具有资源利用、煤矿减灾和环境保护的重大意义。本文运用煤层气地质学、煤田地质学、构造地质学、煤化学等学科的理论和方法,在综合分析煤层气参数井钻井、测井及其他测试资料的基础上,重点评价了焦坪矿区煤层气资源赋存规律及开发潜力。焦坪矿区含煤地层为中侏罗系的延安组,目标煤层为4层,总厚度10~20m,一般14m左右。研究结果表明,本区地质构造简单、地层倾角较小、煤级低、煤层厚度大,且煤层厚度受NE向构造控制,显示出背斜区薄,向斜区厚的特征。尽管煤的变质程度较低,但仍具备一定的生气和储气能力,煤对甲烷吸附能力较强,随着埋深的增加、含气量增加规律明显;煤级低,煤中孔隙、裂隙发育,煤层渗透性较好;经估算,煤层气资源量达15.36×108m3。从煤层含气性和渗透性看,焦坪矿区具有一定的资源开发潜力,JPC-01的排采记录证实了这一点。本次获取了焦坪矿区系统的煤储层参数与生产动态数据,通过JPC-01井生产数据模拟结果分析初步形成了适合该区煤储层特点的排采工作制度。
[Abstract]:The exploitation of surface coalbed methane is of great significance in resource utilization, coal mine disaster reduction and environmental protection. In this paper, the theories and methods of coalbed methane geology, coalfield geology, tectonic geology and coal chemistry are used. On the basis of synthetically analyzing the drilling, logging and other test data of CBM parameter wells, the occurrence law and development potential of CBM resources in Jiaoping mining area are emphatically evaluated. The coal-bearing strata in Jiaoping mining area are Yanan formation of Middle Jurassic system. The target coal seam is composed of 4 layers with a total thickness of 10 ~ 20 m and a general length of about 14 m. The results show that the geological structure in this area is simple, the dip angle is small, the coal rank is low, the coal seam thickness is large, and the coal seam thickness is controlled by NE trending structure, which shows that the anticline is thin. Although the metamorphism degree of coal is low, it still has the ability of gas generation and gas storage, the adsorption ability of coal to methane is strong, the law of gas content increasing with the increase of buried depth is obvious, the coal grade is low, the pores and fissures in coal are developed, The coal bed permeability is good, and the coal bed methane resource is estimated to reach 15.36 脳 108m3.From the view of coal seam gas content and permeability, The discharge records of JPC-01 have proved this. The parameters of coal reservoir and production dynamic data of Jiaping mining area system are obtained. Based on the simulation results of production data of JPC-01 well, the drainage and production work system suitable for the characteristics of coal reservoir in this area has been preliminarily formed.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE37;P618.13

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