YL气田储层岩石物理相特征及应用效果

Petrophysical facies characteristics and application effect of the reservoirs in YL gasfield

解决低孔低渗油气层测井解释模型精度低、适应性差的问题，需要发展有更强针对性的精细解释模型。研究表明。储层岩石物理相对低渗透岩性油气藏的成藏作用和油水分布具有重要的控制作用，同一种岩石物理相通常具有相似的岩性、物性、孔隙结构和含油气性特征，测井响应特征相似。因而以岩石物理相的差异为基础对储层分类建立测井储层参数解释模型，就可能将“非均质、非线性”问题转化为“均质、线性”问题解决，从而准确判断储层含油气性．有效指导开发。

To solve the problems of low precision and poor adaptability of the log interpretation model of low porosity and low permea- bility reservoirs, we need to develop a stronger targeted fine interpretation model. Studies have shown that petrophysical facies of the reservoirs has an important control on the SRCA forming and oil-water distribution in low permeability lithologic reservoirs. The same kind of petrophysical facies have usually similar lithology, physical properties, pore structure, hydrocarbon-bearing characteristics, and logging response characteristics. Thus if a logging interpretation template of reservoir parameters for reservoir classification were established on the basis of the differences of petrophysieal facies, it is possible to transform the ＂heterogeneity, non-linear＂ problems into ＂homogeneous, linear＂ problem Thereby we can accurately determine the hydrocarbon potential for-reservoirs, and give guidance for effective development.