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轮南地区下奥陶统潜山是一个具有良好勘探前景的油气富集区 ,但该区碳酸盐岩储层的不均一性及其预测的难度制约了该区勘探的进展 ,这也是碳酸盐岩地区油气勘探的难题之一。从影响碳酸盐岩储层发育的基本地质条件入手 ,对该区的构造特征、沉积环境及成岩作用分别进行了探讨 ,同时结合近年来的钻探成果进行了分析。结果表明 ,该区储层的储集性主要与次生孔隙有关 ,即主要受构造作用和成岩作用控制 ,而与沉积环境没有直接的关系 ,这一分析为该区碳酸盐岩储层的预测和评价提供了依据
The Lower Ordovician buried hill in Lunnan area is an oil and gas rich area with good prospecting prospects. However, the heterogeneity of carbonate reservoirs in the area and its difficulty in prediction have restricted the exploration progress in the area, which is also a carbonate One of the problems of oil and gas exploration in rock area. Beginning with the basic geological conditions that affect the development of carbonate reservoirs, the paper discussed the tectonic characteristics, sedimentary environment and diagenesis of the area respectively, and analyzed the results of drilling in recent years. The results show that the reservoirs in this area are mainly related to the secondary porosity, that is, they are mainly controlled by tectonism and diagenesis, but not directly related to sedimentary environment. Provide a basis for forecasting and evaluation