论文部分内容阅读
煤储层中裂隙充填物主要是围岩裂隙中的水溶液与煤中有机显微组分热解产生的以气相为主的流体相互作用的产物，它们相互作用带的位置对煤层气藏封闭保存条件的影响至关重要。若无机充填物仅发育于封闭围岩之中，则其相应的煤层气藏的封闭条件好，含气饱和度高；反之，若在煤储层的裂隙中发育大量无机充填物，则煤层气藏的封闭条件差，含气饱和度低。此外，充填物还堵塞了煤储层中裂隙的通道，使渗透率降低。
The fissure filling in coal reservoirs is mainly the product of gas-phase fluid interaction caused by the aqueous solution in the fracture of surrounding rock and the pyrolysis of organic micro-components in coal. The positions of their interaction zones are closed to the coalbed methane reservoir The impact of conditions is crucial. If the inorganic filler only develops in the enclosed rocks, the corresponding CBM reservoirs have good sealing conditions and high gas saturation; on the contrary, if a large amount of inorganic filler is developed in the fractures of the coal reservoirs, the CBM Closed conditions of Tibet poor, low gas saturation. In addition, fillings also block the passage of fractures in coal reservoirs, reducing permeability.