US 2013/0096897 A1 · RESERVOIR MODELING WITH 4D SATURATION MODELS AND SIMULATION MODELS

Abstract

Production based saturation models of subsurface reservoirs of interest are formed in a computer based on data from well logs, production data and core data. Data of these types obtained over a period of time are used to form 4-D actual or measured production based saturation models of a reservoir illustrative of fluid movement in the reservoir over time. Simulation models of fluid saturation of the reservoir are also formed for comparable times. Composite models of the production based saturation models and the simulation models are formed for analysts to evaluate accuracy of the simulation models of the reservoir taking into account production experience. The simulation models can then be adjusted for changes noted in the reservoir and based on how gas and water have actually moved within the reservoir over time.

Claims24

Dependent claims

A computer implemented method of obtaining measures in a data processing system of fluid saturation of a subsurface reservoir from a simulation model and from, a production based model from data measurements of wells in the reservoir during production, the method comprising the computer processing steps of:

(a) processing initial data about formations in the reservoir received from wells in the reservoir to determine an initial measure of fluid saturation of formations in the reservoir at an initial time;
(b) transferring the determined initial measure of fluid saturation in formations of interest in the reservoir to a data memory of the data, processing system;
(c) processing production data during production subsequent to the initial time from wells in the reservoir to determine production based measures of fluid saturation of formations dining production;
(d) assembling in the data memory the determined production based measures of fluid saturation of formations in the reservoir;
(e) determining a simulation model of fluid saturation of formations in the reservoir;
and
(f) forming a composite display of the simulation model of fluid saturation and the determined production based measures of fluid saturation in formations of interest in the reservoir for comparative analysis.

4 more elements

A data storage device having stored in a computer readable medium computer operable instructions for causing a data processing system to obtain measures of fluid saturation of a subsurface reservoir from a simulation model and from a production based model from data measurements of wells in the reservoir during production, the instructions stored in the data storage device causing the data processing system to perform the following steps:

(a) processing initial data about formations in the reservoir received from wells in the reservoir to determine an initial measure of fluid saturation of formations in the reservoir at an initial time;
(b) transferring the determined initial measure of fluid saturation in formations of interest in the reservoir to a data memory of the data processing system;
(c) processing production data during production subsequent to the initial time from wells in the reservoir to determine production based measures of fluid saturation of formations during production;
(d) assembling in the memory the determined production based measures of fluid saturation of formations in the reservoir;
(e) determining a simulation model of fluid saturation of formations in the reservoir;
and
(f) forming a composite display of the simulation model of fluid saturation and the determined production based measures of fluid saturation in formations of interest in the reservoir for comparative analysis.

4 more elements

Dependencies are inferred from the claim text.

Reservoir modeling with 4d saturation models and simulation models

Life of this patent

Reservoir modeling with 4d saturation models and simulation models

Life of this patent

Abstract

Claims24