Reservoir Description based on the static and dynamic regimes in the closegrid well areas: A case study of the Es₃₁ II (1) oil reservoirs, Gao-76 fault block, Nanpu depression, Hebei

The study of a single sandbody may help establish a basis for the development of residual oil and improvement of exploration success. The present paper gives a detailed description of three models such as contour correlation, superimposed sandbody correlation and sedimentary facies correlation models on the basis of core observation and well logs, and three genetic types of sandstones including the subaqueous distributary channel, channel mouth bar and distal bar sandstones. The single sandbody distribution is also discussed in the light of the dynamic injection-production relationship. The results of research in this study will provide a geological basis for the injection-production adjustment, examination of the heterogeneity of the hydrocarbon reservoirs, and prediction of residual oil distribution in the study area.