地层条件下储集岩物性参数特征及影响因素

本文论述了储集岩在地层条件下孔隙度、渗透率的特征以及与地表条件下孔隙度、渗透率的关系。据此，归纳、总结出地层条例下孔隙度、渗透率变化的影响因素。并指出、孔隙度、渗透率的降低幅度主要是在围限压力为２０ＭＰａ范围内；孔隙度降低的幅度远远小于渗透率的降低幅度；孔隙度、渗透率降低的幅度与岩石的粒度、孔隙类型、胶结物等因素有关。

FEATURES AND INFLUENTIAL FACTORS OF PARAMETERS OF PHYSICAL PRORERTY OF RESERVOIR ROCK UNDER CONDITIONS OF UNDERGROUND

The porosity and permeability of reservoir rock are the most essential and important pa-rameters in parameters of physical property. The paper presents the features of porosity and per-meability and the relations between underground and ground.On the base of researching rock prop-erty,viscosity and porosity type,the paper generalizes and surnmarizes the influential factors of porosity and permeability under the condition of underground.The paper presents:(1)The fall ex-tent of porosity and perneability is mainly within 20 MPa of stratigraphic pressure. (2 )The fall extent of porosity is much less than pemeability.(3)The fall extent of porosity and permeability has relations to rock grain size,porosity type,cement and etc.