Identification and Description Technique for Ultra-Deep,Thin Reservoir,Narrow Channel Sand,Tahe Oilfield

Channel sand body for 4th member of Triassic Akekule Formation in Tahe Oilfield is characterized by deep burial(>4 000m),thin sandstone(<10m),and quick lateral changes,which make it difficult to identify the characteristics of the seismic.Based on a small layer of contrast,under the constraints of sedimentary microfacies,this study integrated multi-attribute preferred application,time slicing,frequency mixing,3D visualization techniques to describe sand body distribution characteristics,and has established a set of reservoir identification and description technology for super-deep,thin sand,narrow channel sand bodies for 4th member of Triassic Akekule Formation in Tahe Oilfield.