【摘要】 塔里木盆地麦盖提斜坡区奥陶系碳酸盐岩主要发育2套储集层:中上奥陶统灰岩为裂缝型储集层,主要受多期断裂活动及断裂相关岩溶作用控制,有利储集层主要分布在断裂发育区;下奥陶统白云岩为裂缝-孔洞型储集层,主要受埋藏重结晶作用、埋藏岩溶(有机酸与热液)作用控制,该类型储集层在Q5井三维区、S1井三维区及盆地西部台地区均有分布,地震反射特征为"串珠状"。储集层分布规律表明,下奥陶统白云岩领域是斜坡区奥陶系寻找油气的突破口。更多还原

【Abstract】 There are two sets of Ordovician carbonate reservoirs developed in Maigaiti slope in Tarim basin: the Middle-Upper Ordovician limestone is a fractured reservoir mainly controlled by multistage fault activity and fault-related karstification,and favorable reservoir rocks are mainly distributed in fracture-developed area;the Lower Ordovician dolomite is a fractured-vuggy reservoir chiefly controlled by burial recrystallization,burial karstification(organic acid and hydrotherm),which is distributed in Well Q5 and Well S1 3D seismic areas as well as carbonate platform in western Tarim basin,with seismic reflection characteristics as "beads".The distribution of the reservoir rocks indicates that the Lower Ordovician dolomite reservoir is the breakthrough for hydrocarbon exploration of the Ordovician in Maigaiti slope.更多还原