Logging analysis of Ordovician carbonate reservoirs in Shunbei 1 region, northern Tarim Basin

The Ordovician carbonate reservoirs in Shunbei 1 region of the northern Tarim Basin have a high hete-rogeneity and anisotropy, and the reservoir type is complex. The reservoir types were classified into the cave type, fractured hole type and crack type according to their spatial combination based on imaging logging data and combined with conventional logging and core data. The main faults are dominated by cave reservoirs, and the secondary fractures are mainly fractures and fractured cavities. The reservoirs were compared with adjacent reservoirs. The well logging responses of the horizontal fissures on cores were preliminarily discussed combined with electro imaging logging and acoustic imaging logging. The results of imaging treatment showed that the fracturing seepage ability is poor.