Application of bounding surface restriction to meandering river reservoir architecture modeling

Key words:  bounding surface restriction  reservoir  architecture modeling  attribute modeling  fluvial facies

Abstract:

Based on the data from well drilling, geology, well logging and production performance, the reservoir architecture modeling of meandering river was researched using the method of multi order bounding surface restriction and deterministic modeling in a block of Dagang Oilfield. Reservoir architecture model was established by the method of multi order bounding surface restriction and limited the architecture element among bounding surfaces on the basis of the sedimentary microfacies model and point bar architecture, then the reservoir parameter model was established using stochastic modeling under the restrictions of reservoir architecture on the basis of well data analysis. The results show that the space, dip angle and trend of lateral accretion interbeds on the scale, and they must be rectified using the well data during the modeling. The spatial distribution of lateral accretion bodies and lateral accretion interbeds are embodied well by the modeling method of multi order bounding surface restriction. The attribute modeling under reservoir architecture restriction combines deterministic modeling with stochastic modeling, and the result can reflect the actual situation in the reservoir.