Method for determining organic porosity and inorganic porosity of shale and related method

The invention provides a shale organic porosity and inorganic porosity determination method and related methods, and the determination method comprises the steps: obtaining the total porosity of shale by using a preset first rule; utilizing a preset second rule to obtain shale organic matter porosity; according to the shale total porosity and the shale organic matter porosity, the shale inorganic matter porosity is obtained according to a preset formula. According to the determination method, the shale organic matter porosity and the shale inorganic matter porosity can be obtained through calculation, the development degree of shale organic matter pores and shale inorganic matter pores can be represented, and rock reservoir space, fluid saturation and geological reserves can be calculated. 本发明提出一种页岩有机孔隙度和无机孔隙度确定方法及相关方法，所述确定方法包括，利用预设第一规则获取页岩总孔隙度；利用预设第二规则获取页岩有机质孔隙度；根据页岩总孔隙度和页岩有机质孔隙度，按预设公式得到页岩无机质孔隙度。本确定方法可以计算得到页岩有机质孔隙度和无机质孔隙度，有助于表征页岩有机质孔和无机质孔的发育程度，进行岩石储集空间、流体饱和度以及地质储量计算。