淮南矿区潘集深部13-1煤煤层气资源潜力评价

发布时间：2018-04-17 13:01

本文选题：煤层气 + 煤层气储存　；参考：《安徽理工大学》2017年硕士论文

【摘要】：论文在研究淮南矿区潘集深部的地层特征,构造演化,水文地质条件,储层物性特征的基础上,对煤层气藏形成的地质背景进行分析。从煤层气封盖特征、储层物性特征和地质特征三个方面,筛选6个因素作为评价区优选的指标,通过建立煤层气有利区评价模型,运用多层次分析法来确定各个评价因素的权重,并通过块段平均法、数学统计法来模糊分析,确定各个评价因素的隶属度函数,确定隶属度值。最后,用模糊综合评价和GIS空间叠加相结合的方法,对潘集深部13-1煤煤层气有利区进行综合评价。通过研究分析可知:研究区内13-1煤层厚度大部分大于3.5m,煤层埋深在1000m-1500m。煤层有机组分以镜质组为主,灰分含量29.04%～38.31%,压汞孔隙度在3.07g/cm3-4.48g/cm3之间。底板岩性为泥岩,顶板岩性以灰～深灰色泥岩为主,局部夹粉砂岩与薄层细砂岩,厚4.35～12.80m,平均厚8.18m,具有良好的煤层气生气条件以及储存环境。以容积法与网格法相结合的方法为基础,利用利用GIS软件对研究区的资源储量进行预测。计算结果表明,研究区13-1煤层煤层气资源总量为205.6×108m3,源丰富的地区瓦斯含气量大多在14m3/t以上。在GIS平台上对确定的各因素隶属度分布区进行叠加,运用模糊综合评价的方法对研究区内综合评价值进行计算。得到的结果表明:最有利的勘探开发区带为研究区的东北区域,此区域具有良好的生气储气潜力和经济开发价值。
[Abstract]:Based on the study of the stratigraphic characteristics, tectonic evolution, hydrogeological conditions and reservoir physical properties of Panji in Huainan mining area, the geological background of coalbed methane reservoir formation is analyzed in this paper.From the three aspects of capping characteristics of coalbed methane, reservoir physical properties and geological characteristics, six factors are selected as indicators for the optimal selection of evaluation areas, and the evaluation model for favorable areas of coalbed methane is established.The weight of each evaluation factor is determined by multi-level analysis method, and fuzzy analysis is made by using block average method and mathematical statistics method, and the membership degree function of each evaluation factor is determined, and the membership degree value is determined.Finally, the method of fuzzy comprehensive evaluation and GIS space superposition is used to evaluate the favorable area of 13-1 coal-bed methane in the deep of Panji.The results show that the thickness of 13-1 coal seam is more than 3.5 m, and the depth of coal seam is between 1000m and 1500m.The organic component of coal seam is vitrinite, the ash content is 29.04 and 38.31, and the porosity of mercury injection is between 3.07g/cm3-4.48g/cm3.The bottom lithology is mudstone, the roof lithology is mainly gray to dark gray mudstone, the local siltstone and thin layer fine sandstone are 4.35 ~ 12.80 m thick, the average thickness is 8.18 m, and the roof lithology is of good coal-bed methane gas generation condition and storage environment.Based on the combination of volume method and grid method, the GIS software is used to predict the resource reserves in the study area.The calculation results show that the total amount of coalbed methane resources in the 13-1 coal seam is 205.6 脳 10 ~ 8m ~ 3, and the gas content in the region with abundant sources is mostly above 14m3/t.On the platform of GIS, the distribution of membership degree of each factor is superposed, and the comprehensive evaluation value of the study area is calculated by using the method of fuzzy comprehensive evaluation.The results show that the most favorable exploration development zone is the northeast region of the study area, which has good gas storage potential and economic development value.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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