本文通过分析车66区块沙三下储层特征情况,发现该区储层大多为极低渗、低产,储集空间以次生孔隙和裂缝为主,裂缝的发育程度决定了产能的高低,压裂后一般具有较明显的增产效果,呈现出见油早,短时间达到峰值,但压力和产能都衰竭较快的特征。 In this paper, by analyzing the reservoir characteristics of Sha 3 reservoir in Block Che 66, it is found that most of the reservoirs in this area are extremely low permeability and low yield. Secondary pores and fractures dominate the reservoir space. The degree of fracture development determines the level of productivity, After fracturing generally has a more obvious stimulation effect, showing the see oil early, short time to peak, but the pressure and productivity are depleted faster features.