Method for Predicting Fluid Flow

摘要

A method of enhancing a geologic model of a subsurface region is provided. A bed topography of the subsurface region is obtained. The bed topography is defined by a plurality of cells with an elevation associated with each cell center. The bed topography is represented as a cell-centered piecewise constant representation based on the elevations associated with the cells. The bed topography is reconstructed to produce a spatially continuous surface. Flux and gravitational force-related source terms are calculated based on the reconstructed bed topography. Fluxes are calculated between at least two of the cells. Fluid flow, deposition of sediments onto the bed, and/or erosion of sediments from the bed are predicted using the fluxes and gravitational force-related source terms. The predictions are inputted into the geologic model to predict characteristics of the subsurface region, and the predicted characteristics are outputted.

主权项

1. A method of enhancing a geologic model of a subsurface region, comprising:
(a) obtaining a bed topography of the subsurface region, the bed topography defined by a plurality of cells, each of the plurality of cells having an elevation associated with its cell center, (b) representing the bed topography as a cell-centered piecewise constant representation based on the elevations associated with the plurality of cells; (c) reconstructing the bed topography to produce a spatially continuous surface; (d) calculating flux and gravitational force-related source terms based on the reconstructed bed topography; (e) calculating fluxes between at least two of the cells, taking into account variations of the bed topography across a face between the at least two of the cells; (f) predicting at least one of fluid flow, deposition of sediments onto the bed, and erosion of sediments from the bed using the fluxes and gravitational force-related source terms; (g) inputting the predicted at least one of fluid flow, deposition and erosion into the geologic model of the subsurface region; (h) using the geologic model to predict characteristics of the subsurface region; and (i) outputting the predicted characteristics of the subsurface region.