Hierarchical modeling of the channel mouth bar architectures in the river-dominated deltas in the Dongxin Oil Field, Dongying depression, Shandong

The present paper presents a new hierarchical 3D modeling of the channel mouth bar sandstone reservoirs in the river-dominated deltas based on the boundary recognition and well spacing forecast. The results show that a complete channel mouth bar model may provide the spatial theoretical support for the actual production under the combined effects of human-computer interaction. The constant forward migration of individual architectural-elements resulted in the formulation of the progressive delta model for the study area. The third-order boundaries between the channel mouth bar accretionary sandstone bodies exhibit the angles ranging from 0. 2° to 3. 43°, extended distance of 1. 64 km for the principal source area, and vertical direction extending 0. 89 km. On the whole, the channel mouth bar accretionary sandstone bodies are laterally extensive, and display the sheet distribution. These results will not only improve the theoretical study of the channel mouth bar sandstone reservoirs, but also enhance petroleum exploration efficiency in the study area.