储层渗透率对天然气开采的影响研究

摘要

With the decrease of oil production, the demand of natural gas is increasing. In order to fully mining the gas field, it is necessary to have a deep understanding of the geological parameters and the influence of geological parameters of the gas field on improving the recovery of the gas field. In this paper, the influence of geological permeability on the exploitation of natural gas was studied. The preliminary investigation and numerical simulation study found that stable time and recovery ratio are in direct proportion with permeability;The higher the permeability, the longer the stable time and the higher the recovery rate. In addition, with the increase of permeability, the growth rate of stable time and recovery ratio decreases gradually.Therefore, the higher the geological permeability, the smaller its impact on natural gas exploitation.%随着石油开采量的降低，天然气的需求量便日益增长。为了充分开采气田，需要对气田的地质参数以及地质参数对天然气开采的影响有深入的了解，以提高气田的采收率。主要研究储层渗透率对天然气开采的影响，通过前期调研和数值模拟研究发现，稳产时间和采收率跟渗透率成正比关系，渗透率越大稳产时间越长，采收率越高；此外，随着渗透率的增大，稳产时间和采收率的增幅逐渐减小。因此储层渗透率越大，其对天然气开采的影响也就越小。