Discussion and application of thin-layer sand connectivity of outer front facies

In this paper, the microfacies of thin-layer sand of outer front facies are described by homogeneous unit thickness classification in the past, the plane distribution of single sand body and the connection relationship between different sand body types are roughly understood; From the two aspects of vertical single-stage thin-layer sand body identification and fine description of sedimentary facies belt map applying energy facies in plane microfacies, the outer front belt is divided into 6 types and 9 kinds of thin-layer sand combinations, the connectivity of sand bodies is clearer and the directionality is clearer. The application of research results not only deepens the geological understanding, but also guides the adjustment of water-driven scheme.