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海相缝洞型油气藏主要储集空间为溶蚀作用和构造过程形成的次生孔隙、洞穴和裂缝。通过比较塔北和塔中地区岩石孔隙度和渗透率,按储层成因将孔-洞-缝油藏划分为洞穴型储层、构造裂缝型储层、风化裂隙型储层、台缘礁滩相颗粒灰岩溶蚀孔隙型储层和地表残积物裂隙孔隙(洞)型储层等类型。结合勘探实践,分析次生孔-洞-缝储集层成因,进行不同地区储集层成因对比,并建立了岩溶储层预测模式。
The main reservoirs of marine fractured-cavity reservoirs are secondary pores, caves and fractures formed by dissolution and tectonic processes. By comparing the porosity and permeability of rocks in Tarim and Taizhong areas, the hole-hole-seam reservoirs are divided into cave reservoirs according to reservoir genesis, and fractured reservoirs, weathering fractured reservoirs, Phase grain limestone dissolution pore type reservoir and surface residuals fracture pore type reservoir. Based on the exploration practice, the causes of secondary pore-cave-seam reservoirs are analyzed, and the causes of reservoirs in different areas are compared. The prediction model of karst reservoirs is established.