Study on Prediction Method of Fluvial Facies Sandbody in Fluvial Shallow Water Delta

Shallow lake basin fluvial-dominated delta front subfacies’s sandbody are widely distributed, and the thin sand body, small scale and diversification as the main features, and they are quite different from delta front in the classic delta sedimentary model developed large-scale and thick estuary sand dam sedimentary. At present, most of them in the development of the oil producing degree is poor, is the main target area in Eastern old oil reservoir, fine anatomy and in-depth understanding of shallow lacustrine fluvial-dominated delta front subfacies’s single sandbody formation, distribution characteristics and sedimentary model is particularly urgent. Taking Yong 56-96 block in the southern part of Song Fangtun oil field as an example, this paper analyzed and compared several prediction methods of sand bodies, and made joint prediction of seismic and seismic reservoirs in the study area, thus effectively identified thin channel sand bodies and sheeted sand bodies.