卞杨地区阜二段裂缝分布特征研究

Fracture distribution characteristic of Fu 2 member in Bian-Yang region

经过岩心裂缝观测,获得了卞杨地区阜二段储层裂缝的性质、充填、开度、密度、走向、倾角等裂缝参数。采用莫尔-库仑准则和格里菲斯准则相结合的方法建立了物理模型,按照能量守恒原理建立了应力和应变的数学关系,根据前人古应力场、现今应力场研究成果,数值模拟了卞东区块阜二段、杨家坝区块阜二段储层裂缝的开度、密度、孔隙度和渗透率。对比认为,研究结果可靠。

By the core observation, the fracture parameters of Fu 2 member in Bian - Yang region, such as its nature, packing, aperture, density, strike, dip and so on, is acquired. With Coulumb - Mohr principle and Griffith principle, the me- chanical model and the relationship between stress and fracture parameter are established. On the basis of earlier research results of paleo - stress and present stress, the aperture, density, porosity and permeability of rock fracture in Fu 2 member of Biandong Oilfield and Yangjiaba Oilfield are numerically calculated. The study shows that the results are reliable.