System and method for evaluating dynamic heterogeneity in earth models
AssigneeChevron U.S.A. Inc.
InventorsGeorge Michael Shook, Kameron Monroe Mitchell
Life of this patent
Estimating the term…
Abstract
A method is disclosed having application notably towards ranking earth models responsive to dynamic heterogeneity. A plurality of earth models representing a subsurface reservoir are provided. Streamline analysis for each of the plurality of earth models is conducted. Flow Capacity (F) vs. Storage Capacity (Φ) curves are constructed for each of the plurality of earth models based on the streamline analysis. Dynamic heterogeneity for each of the plurality of earth models is computed from the Flow Capacity (F) vs. Storage Capacity (Φ) curves constructed for each of the plurality of earth models. The plurality of earth models are ranked responsive to dynamic heterogeneity.
Claims18
A computer-implemented method for determining a dynamic heterogeneity of a subsurface reservoir, the method comprising:
- (a) providing an earth model representing a subsurface reservoir;
- (b) performing a streamline analysis to identify a plurality of streamlines indicative of flow geometry within the earth model;
- (c) determining a flow and storage capacity for the earth model responsive to the streamline analysis wherein determining the flow and storage capacity for the earth model includes assembling a curve comparing flow capacity against storage capacity and wherein the curve comparing flow capacity against storage capacity is assembled by ordering the plurality of streamlines indicative of flow geometry within the earth model according to increasing residence time;
- (d) calculating a dynamic heterogeneity for the earth model responsive to the flow and storage capacity for the earth model;
- and (e) displaying the dynamic heterogeneity for the earth model.
A computer-implemented method for determining a dynamic heterogeneity of a subsurface reservoir, the method comprising:
- (a) providing a plurality of reservoir models representing a subsurface reservoir;
- (b) identifying a plurality of streamlines indicative of flow geometry within the subsurface reservoir for each of the plurality of reservoir models;
- (c) constructing a flow and storage capacity curve for each of the plurality of reservoir models by ordering the plurality of streamlines for each of the plurality of reservoir models according to increasing residence time;
- (d) calculating a dynamic heterogeneity for each of the plurality of reservoir models responsive to the flow and storage capacity curve for each of the plurality of reservoir models;
- and (e) displaying the dynamic heterogeneity for the plurality of reservoir models to rank the plurality of reservoir models responsive to a production performance metric.
A computer-implemented method for determining a dynamic heterogeneity of a subsurface reservoir, the method comprising:
- (a) providing an earth model representing a subsurface reservoir;
- (b) identifying a plurality of streamlines indicative of flow geometry within the earth model;
- (c) determining a flow and storage capacity for the earth model responsive to the streamlines indicative of flow geometry within the earth model comprising ordering the plurality of streamlines for each of the plurality of reservoir models according to increasing residence time;
- (d) calculating a Lorenz Coefficient for the earth model responsive to the flow and storage capacity of the earth model;
- and (e) displaying the Lorenz Coefficient for the earth model.
Dependencies are inferred from the claim text.