【摘要】：調研了煤層氣吸附理論與實驗、水對煤層氣吸附-解吸過程的影響與煤層氣液-固吸附理論體系等3方面的研究進展,總結了氣相吸附理論在煤層氣吸附研究中取得的成果以及水對煤層氣吸附的影響作用,分析了氣相吸附理論在解釋煤層氣吸附狀態(tài)時存在的問題,介紹了最新的液相吸附理論及在此基礎上的煤層氣復合解吸理論。不同相態(tài)的水對煤層氣的吸附作用不同,煤樣含水飽和度較低時,氣相的平衡水可以顯著降低煤層氣的吸附量;當含水飽和度達到一定臨界值時,含水量對煤層氣吸附量變化的影響不大;而煤樣中含水進一步增大時,注水煤樣中液相水可以增加煤層氣的吸附量煤層氣的賦存狀態(tài)與氣相吸附規(guī)律并不相符,而煤層氣的液相吸附理論可以同時解決煤巖在水環(huán)境下生烴的條件及氣相吸附?jīng)]有臨界解吸壓力的問題;在液相吸附的條件下,煤層氣的解吸過程是由氣相及液相解吸共同控制的復合解吸過程。
[Abstract]:The theory and experiment of coalbed methane adsorption, the influence of water on the process of adsorption-desorption of coalbed methane and the theoretical system of liquid-solid adsorption of coalbed methane were investigated. This paper summarizes the achievements of gas adsorption theory in the study of coalbed methane adsorption and the effect of water on the adsorption of coalbed methane, and analyzes the problems of gas phase adsorption theory in explaining the adsorption state of coalbed methane. The latest liquid adsorption theory and the coal bed methane complex desorption theory are introduced. When the water saturation of coal sample is low, the equilibrium water of gas phase can significantly reduce the adsorption capacity of coal bed methane, and when the water saturation reaches a certain critical value, The moisture content has little effect on the adsorption capacity of coal bed methane, but when the water content in coal sample increases further, the water in liquid phase of injected coal sample can increase the adsorption capacity of coal bed methane, and the occurrence state of coal bed methane does not accord with the law of gas phase adsorption. The liquid adsorption theory of coalbed methane can solve the problem of hydrocarbon generation and gas phase adsorption without critical desorption pressure at the same time. The desorption process of coalbed methane is a complex desorption process controlled by gas phase and liquid phase desorption.
【作者單位】： 西南石油大學"油氣藏地質及開發(fā)工程"國家重點實驗室;
【基金】：國家自然科學基金(51474179) 國家科技重大專項(2016ZX05066004-001)
【分類號】：TE37
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本文編號：2260959