新疆阜康煤田瓦斯渗流性的数学模型研究
发布时间：2018-11-24 09:47
【摘要】：我国具有丰富煤层气藏资源，居世界第三位，其大部分布于300—1500m的埋深处，具有很的广阔开采前景和资源价值。在新疆准南煤田阜康矿区一带通过钻井资料和瓦斯样品分析知该区煤层厚大，其煤质主要为气煤和焦煤、煤层气的富集程度较好和资源量丰富，开采区。通过前期现场的工作和资料文献的查阅，表明该研究区内煤储层的构造条件和渗透性较好，是煤层气理想的储存和运移环境，综合上诉条件，该研究区是理想的煤层气开采区。 采集的研究样品全部来自阜康矿区一带,样本通过工业分析、孔隙度测定和等温压力的测定的实验，得到了相应的数据，为研究煤层气的渗流性提供了理论基础。 通过查阅国内外文献和现场的采样,通过在实验室中分析，使自己对煤层气的各个渗流阶段的机理更加的了解,通过多次反复计算，概括出了煤层气渗流性的数学模型,其研究过程主要有以下三个方面： （1）在煤岩中煤层气主要以吸附态、游离态两种形式储集。煤层气从煤岩基质孔隙中开采出来主要经历了三个过程，即解吸、扩散和渗流。 （2）通过简化的物理模型，建立了数学模型。 （3）对阜康矿井煤层气进行数值模拟以后,在根据计算机编程，，进行资源的一些评价。
[Abstract]:China is rich in coalbed methane resources, ranking the third in the world, most of which are distributed in the depth of 300-1500 m, which has a very broad mining prospect and resource value. Through the analysis of drilling data and gas samples in Fukang mining area of Zhongnan coalfield in Xinjiang, it is found that the coal seam in this area is thick, the coal quality is mainly gas coal and coking coal, the enrichment degree of coalbed methane is good and the resources are abundant, and the mining area is well developed. It is shown that the structural conditions and permeability of the coal reservoir in the study area are good, which is the ideal environment for the storage and migration of coal bed methane, and the comprehensive appeal condition. The study area is an ideal mining area for coal bed methane. The collected samples are all from the area of Fukang mining area. Through the experiments of industrial analysis, porosity measurement and isothermal pressure measurement, the corresponding data are obtained, which provides a theoretical basis for studying the percolation of coalbed methane. By consulting the domestic and foreign literature and sampling on the spot, through analyzing in the laboratory, the mechanism of each percolation stage of coalbed methane is better understood, and the mathematical model of percolation of coalbed methane is summarized through repeated calculation. The main research processes are as follows: (1) the coalbed methane in coal and rock is mainly stored in the form of adsorption state and free state. Coal bed methane (CBM) extraction from the pores of coal matrix has experienced three main processes, namely desorption, diffusion and percolation. (2) through the simplified physical model, the mathematical model is established. (3) after numerical simulation of coalbed methane in Fukang mine, some resources are evaluated according to computer programming.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD712
本文编号：2353202
[Abstract]:China is rich in coalbed methane resources, ranking the third in the world, most of which are distributed in the depth of 300-1500 m, which has a very broad mining prospect and resource value. Through the analysis of drilling data and gas samples in Fukang mining area of Zhongnan coalfield in Xinjiang, it is found that the coal seam in this area is thick, the coal quality is mainly gas coal and coking coal, the enrichment degree of coalbed methane is good and the resources are abundant, and the mining area is well developed. It is shown that the structural conditions and permeability of the coal reservoir in the study area are good, which is the ideal environment for the storage and migration of coal bed methane, and the comprehensive appeal condition. The study area is an ideal mining area for coal bed methane. The collected samples are all from the area of Fukang mining area. Through the experiments of industrial analysis, porosity measurement and isothermal pressure measurement, the corresponding data are obtained, which provides a theoretical basis for studying the percolation of coalbed methane. By consulting the domestic and foreign literature and sampling on the spot, through analyzing in the laboratory, the mechanism of each percolation stage of coalbed methane is better understood, and the mathematical model of percolation of coalbed methane is summarized through repeated calculation. The main research processes are as follows: (1) the coalbed methane in coal and rock is mainly stored in the form of adsorption state and free state. Coal bed methane (CBM) extraction from the pores of coal matrix has experienced three main processes, namely desorption, diffusion and percolation. (2) through the simplified physical model, the mathematical model is established. (3) after numerical simulation of coalbed methane in Fukang mine, some resources are evaluated according to computer programming.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD712
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