4d saturation modeling
AssigneeSaudi Arabian Oil Company
InventorAli M. Al-Shahri
Life of this patent
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Abstract
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 Saturation models of a reservoir illustrative of fluid movement in the reservoir over time. The saturation models based on actual data are theft available for analysts to evaluate and display how gas and water have moved within the reservoir over time.
Claims24
A computer implemented method of obtaining measures in a data processing system of fluid saturation of a subsurface reservoir over a period of time during production from the reservoir based on data measurements from wells in the reservoir, 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 measures of fluid saturation of formations during production;
- (d) assembling in the memory the determined measures of fluid saturation of formations for the reservoir;
- and
- (e) forming an output display of selected ones of the determined measures of fluid saturation in formations of interest in the reservoir for evaluation of formation fluid saturation changes during production flora the reservoir.
A data processing system for obtaining measures of fluid saturation of a subsurface reservoir over a period of time during production from the reservoir based on data measurements from wells in the reservoir, the data processing system comprising:
- (a) a processor performing the steps of:
- (1) 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;
- (2) transferring the determined initial measure of fluid saturation in formations of interest in the reservoir to a data memory of the data processing system;
- (3) processing production data during production subsequent to the initial time from wells in the reservoir to determine measures of fluid saturation of formations during production;
- (4) assembling in memory the determined measures of fluid saturation of formations for the reservoir;
- and
- (b) an output display forming images of selected ones of the determined measures of fluid saturation in formations of interest in the reservoir for evaluation of formation fluid saturation changes during production from the reservoir.
A data storage device having stored in a computer readable medium computer operable instructions for causing a date processing system to obtain measures in a computer system of fluid saturation of a subsurface reservoir over a period of time during production from the reservoir based on data measurements from wells in the reservoir, 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 computer system;
- (c) processing production data during production subsequent to the initial time from wells in the reservoir to determine measures of fluid saturation of formations during production;
- (d) assembling in the memory the determined measures of fluid saturation of formations for the reservoir;
- and
- (e) forming an output display of selected ones of the determined measures of fluid saturation in formations of interest in the reservoir for evaluation of formation fluid saturation changes during production from the reservoir.
Dependencies are inferred from the claim text.