滇东地区煤层气地质条件及选区评价

发布时间：2018-05-23 09:31

本文选题：滇东 + 多煤层　；参考：《中国矿业大学》2017年硕士论文

【摘要】：滇东地区是典型的多煤层地区,具有高应力、构造复杂、构造煤发育等特点,使得目前比较常见的选区方法和指标很难在该区直接应用。本论文以滇东多煤层发育区为研究对象,以众多含煤向斜和矿区为基本研究单元,在大量煤田地质勘探资料和煤层气井资料基础上,结合实验室测试分析数据,分析了研究区构造条件、沉积特征、水文条件等宏观控气地质因素,探讨了含煤性、含气性、渗透性、资源可采性等煤层气地质条件特征;分别运用“关键要素递阶优选法”和“煤储层能量系统法”进行了煤层气有利目标区和靶区优选,提出了一套适合研究区的多煤层煤层气地质选区指标体系和方法。以煤层气地质资源量、煤层气地质资源丰度、煤层气可采资源量、煤层气可采资源丰度、埋深1000m以浅地质资源量、渗透率、临储比为关键评价要素,运用“关键要素递阶优选法”对滇东地区众多含煤向斜(矿区)进行了煤层气有利目标区优选。结果显示,老厂为最有利区;恩洪、阿岗、圭山为较有利区,其中恩洪更佳;新庄、昭通为一般有利区;罗木、倘塘、宝山、来宾、镇雄、羊场等为不利区。针对老厂、恩洪有利目标区,基于“煤储层能量系统”选区方法,利用煤层气成藏三元判识标志参数,定量表征了煤储层的有效运移系统和有效压力系统,在恩洪、老厂有利目标区内进行了煤层气勘探开发“靶区”优选。结果显示,恩洪矿区Ⅱ构造单元和老厂矿区四勘区为最有利靶区。
[Abstract]:East Yunnan is a typical multi-coal seam area with the characteristics of high stress, complex structure and development of tectonic coal, which makes it difficult to apply the common selection method and index directly in this area. This paper takes the development area of multi-seam in eastern Yunnan as the research object, taking many coal syncline and mining area as the basic research units, based on a large number of coalfield geological exploration data and coalbed gas well data, combined with the laboratory test and analysis data. The structural conditions, sedimentary characteristics and hydrological conditions of the study area are analyzed, and the characteristics of coal-bearing, gas-bearing, permeable and recoverable coal-bed methane geological conditions are discussed. In this paper, the "key element hierarchical optimization method" and "coal reservoir energy system method" are used to optimize the favorable target area and target area of coalbed methane, and a set of multi-coalbed methane geological selection index system and method suitable for the study area are put forward. Taking the geological resources of coalbed methane (CBM), the abundance of CBM (coalbed methane), the recoverable resources (CBM), the depth (1000m) of CBM as the key evaluation elements, the quantity of shallow geological resources, the permeability and the ratio of adjacent reserves are the key evaluation elements. By using the method of hierarchical selection of key elements, a number of coal-bearing synclines (mining areas) in eastern Yunnan are selected for the favorable target area of coal-bed methane (CBM). The results show that the old factory is the most favorable area; Enhong, Agang and Guishan are the more favorable areas, of which Enhong is better; Xinzhuang, Zhaotong is the general favorable area; and Lamu, Luantang, Baoshan, Guest, Zhenxiong and Sheep Farm are unfavorable areas. In view of Laochang and Enhong favorable target area, based on the method of "coal reservoir energy system", the effective migration system and effective pressure system of coal reservoir are quantitatively characterized by using the three dimensional identification criteria parameters of coalbed methane reservoir formation, and the effective migration system and effective pressure system of coal reservoir are quantitatively represented in Enhong. In the favorable target area of the old factory, the target area of coalbed methane exploration and development has been selected. The results show that the second tectonic unit and the fourth prospecting area of Laochang mining area are the most favorable target areas.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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