沁南地区型煤覆压孔渗实验研究
首发时间:2014-11-28
摘要:为了探讨沁南地区煤储层物性的主控因素,通过将原煤样品压制成型煤样品,并进行覆压孔渗实验,得出不同类型型煤样品的孔渗值,进行对比分析后探讨出不同煤岩成分对煤储层孔渗、渗流模式的影响。通过对实验数据的分析可知气体通过煤岩时,会优先选择优势渗流通道,且在不同类型的型煤中,优势渗流通道会发生变化。在控制型煤渗透率的多种因素中,煤岩组分为主控因素且为根本因素,其次为煤岩非均质性。
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Permeability of Overburden Pressure Experiment of Briquette Coal in Qinnan Region
Abstract:In order to explore the main controlling factors of coal reservoir physical properties in Qinnan region, the original coal samples was manufactured into briquette coal. Through the permeability overburden pressure experiment, the poroperm values of different kinds of briquette coal samples were obtained and analyzed, then the influence of coal and rock composition in coal reservoir permeability and the seepage model was explored. The analysis of the experimental data shows: it will give preference to advantage seepage channel when the gas pass the coal , and the dominant channel will change among different briquette coal samples; in many controlling factors of coal permeability, coal and rock composition is the main controlling factor ,even as the fundamental factor, followed by coal and rock heterogeneity.
Keywords: coal reservoir physical properties briquette coal permeability overburden pressure experiment coal and rock compositio main controlling factors
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