STUDY ON THE GEOLOGICAL MODEL OF RESERVOIR HETEROGENEITY IN LOW-PERMEABILITY SANDSTONE OIL POOLS

Based on the comprehensive geological study of Niu-20, Chun-41, Zhuang-74 and Daluhu low-permeability sandstone oil pools, the research content and method of the geological model on the reservoir heterogeneity of low-permeability sendstone oil pools in Shengli oil district were sumarized systematically in this paper.This modol takes full use of 3-D seismic, geologic, drilling, logging and testing data.Quantitative research is the major method, and the study of stratigraphic, structural and reservoir models is the base.The study of fracture models is the key, which including the study of field and core fractures, fracture density research by logging, fracture trend prediction by paleo-tectonic stress field simulation, fracture connectivity research by modern stress field simulation and the effect analysis of fracture direction and resservoir fractures on oilfield development.The study of the geological model on reservoir heterogeneity mainly includes the establishment of the logging data interpretation model and the study of interlayer, in-trastratal and plane heterogeneity.The model has good application effects in Shengli oil district.