Embedding modeling method for internal architecture of point bar sand body in meandering river reservoir

Key words:  meandering river  point bar  internal architecture  lateral accretion shale beddings  embedding modeling  Gud-ao Oilfield

Abstract:

A new internal architecture embedding modeling method was proposed for the reservoir heterogeneity of latera] accretion shale beddings ( LA) of point bar sand body in meandering river reservoir. Based on the point bar 3D grid model and the internal architecture analysis results, three-order modeling technology links were applied to form a full set of embedding modeling technology process and the algorithm implementationt which includes 3D vector field lateral accretion pattern filling modeling, the LA thickness distribution interpolation in the control of lateral accretion surface trend and partial grid subdividing model embedding process. And then, the validity of the modeling method was validated. The results show that the embedding modeling melhod can be used to establish fine 3D model of LA which conditions to wells, and the LA distribution between wells can be drawn from this fine model. An optimized grid description of different levek and scale architecture units was provided through partiai grid subdividing model embedding technology.