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阜新盆地煤层气储运规律及资源预测研究
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摘要
将煤层气视为一种资源对其开发利用不仅可以提高煤矿安全生产水平,而且
    使不可再生的矿物资源得到充分利用,为国民经济的发展提供一种洁净、优质的
    能源,对于缓解我国当前面临的能源紧缺状况亦具有重要意义。阜新矿区是我国
    早期煤炭生产基地之一,煤炭开采具有悠久历史。目前,矿区浅部煤炭资源已近
    枯竭,现存矿井开采地下深部煤层,且大多数为高瓦斯矿井。对阜新盆地煤层气
    资源进行合理评价和产能预测,是阜新工业企业振兴及地区经济中长期发展的迫
    切要求。
    本文通过对阜新盆地煤层气井研究资料和现场试验资料的探索研究,分析提
    出煤层气储层参数标准,建立了阜新盆地煤层气可采性参数评价指标体系;在分
    析研究煤层气赋存、运移机理的基础上,建立煤层气赋存、运移的动力学模型,
    在此基础上构建数值模型,对阜新盆地煤层气开采进行产量预测和产量分析。
    研究内容主要包括以下几个方面:
    (1) 针对阜新盆地煤层气资源,对煤层气储集状态、扩散和渗流作用等赋存、
    运移机理进行了系统分析和试验研究,为煤层气藏渗流数学模型的建立奠定了理
    论基础。
    (2) 建立了煤层气赋存、运移的孔隙-裂隙双重介质模型和双重介质中煤层
    气的渗流数学模型(涉及煤层气的解吸与扩散模型、煤层气的渗流模型、煤层气
    藏特殊参数处理和定解条件等),为定量分析煤层气储运规律提供理论依据。
    (3) 采用有限差分方法对煤层气藏渗流数学模型进行差分离散,并采用全隐
    式方法建立煤层气藏模拟的数值模型,以保证解的稳定性
    (4) 建立了煤层气藏数值模拟分析方法,并对阜新盆地的煤层气藏的储运规
    律进行模拟及产能敏感性的数值模拟。
    (5) 建立了煤层气资源评价参数标准及评价指标体系,并首次应用模糊数学
    评价方法,对阜新盆地五个煤矿井区进行了煤层气储层模糊数学评价分析。
Regarded the coalbed gas as a kind of resource to utilize can not merely improve safe production level of coal mines, and maked non-renewable mineral resources fully utilized, by that offers a kind of clean, high-quality energy for development of national economy, and it also has the signification for alleviating the energy short supply state that our country faces at present.FUXIN mining area is one of the coal production bases in our country, it has long history that the coal is exploited. At present, coal resource in shallow mining area will be exhausted, and must exploite the deep area. Most of them is the more-gas coal mines.Rational appraisal and forecast produce of coalbed gas the to FUXIN basin, it is that the industrial enterprise of FUXIN revitalizes and urgent demand for development of midium or long term of regional economy.The coalbed gas well materials and field experiment materials in FUXIN basin are studied carefully.Parameters standards of coalbed gas stores layers are analysed, and at the same time the adopting parameter evaluation index system in FUXIN basin is set up.On the basis of analysing and researching the coalbed gas storage and transport mechanism, the coalbed gas storage and transport dynamic model is set up ,so does the numerical model .By the models ,exploition output is predicted and analysed coalbed gas in the FUXIN basin.The research contents include the following several respects mainly:(1)According to coalbed gas resource in FUXIN basin, the storage and transport mechanism for the coalbed gas reservoir state and diffuseness and seepage and so on are analysed and experimentally investigated, by this the theoretical basis is established for the coalbed gas seepage mathematic model(2)The pore-fissure double media model and the coalbed gas seepage mathematic model in this media, which describe the storage and transport mechanism for the coalbed gas, are fully established, including desorption and diffusion model, the coalbed gas seepage mathematic model, the disposal for coalbed gas special parameters and its determinative conditions and so on.(3)The finite difference method is used to solve the the coalbed gas seepage mathematic model ,and the coalbed gas numerical model is established using implicit differential method for the stability of numerical solution.(4) The numerical simulation method of coalbed gas is established and use it to simulate the coalbed gas storage and transport and throughput capacity sensibility I n
    
    FUXIN basin.(5)According this evaluation parameters standard and parameter evaluation system of coalbed gas recoverability, used fuzzy mathematics assessment method ,the coalbed gas resource in 5 mining areas of FUXIN basin is evaluated.
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