Methods, systems, and computer medium having computer programs stored thereon to optimize reservoir management decisions

Patent metadata

Field	Value
Publication number	US-2016010444-A1
Application number	US-201414330324-A
Country	US
Kind code	A1
Filing date	Jul 14, 2014
Priority date	Jul 14, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

Embodiments of the invention include systems, methods, and computer-readable mediums for optimizing the placement of wells in a reservoir. Embodiments include, for example, determining for a reservoir a productivity index for each coordinate of a reservoir using reservoir metrics associated with the reservoir, generating a grid pattern of the reservoir using the productivity index with time values extracted for each coordinate, determining a total dynamic productivity index for each coordinate, and determining placement of one or more wells responsive to the total dynamic productivity index and minimum spacing between the one or more wells. Embodiments further include, for example, generating a production analysis report for the reservoir that includes an assessment of well placement and generating a wells placement map using one or more total dynamic productivity index indicators.

First claim

That which is claimed is:

1 . A wells placement analysis system, the system comprising:
one or more processors; one or more input/output units adapted to be in communication with the one or more processors; one or more databases adapted to store and associate a plurality of reservoir metrics with a plurality of coordinates to thereby define one or more reservoir databases, the one or more reservoir databases in communication with the one or more processors; one or more non-transitory computer-readable mediums positioned in communication with the one or more processors and having one or more computer programs stored thereon including a set of instructions that when executed by one or more processors cause the one or more processors to perform operations of: determining, by one or more processors, for a reservoir a productivity index for each coordinate using to one or more of the plurality of reservoir metrics associated with the reservoir; determining, by one or more processors, a total dynamic productivity index for each coordinate responsive to determining the productivity index for each coordinate; and generating, by one or more processors, a production analysis report for the reservoir responsive to determining the total dynamic productivity index for each coordinate, the production analysis report including an assessment of well placement for the reservoir.

2 . The system of claim 1 , wherein the productivity index is calculated using the formula:
PI=q /( P i −P wf ) wherein PI is the productivity index, q is a well production rate in barrels per day, P i is an average block pressure in pounds per square inch, and P wf is a near wellbore flowing pressure in pounds per square inch.

3 . The system of claim 1 , wherein the reservoir has a length of X n , a width of Y n , and depth of Z n ; and wherein the productivity index and the total dynamic production index is determined for each X n ×Y n ×Z n coordinate.

4 . The system of claim 1 , wherein the reservoir has a length of X n and a width of Y n ; and wherein the productivity index and the total dynamic production index is determined for each X n ×Y n coordinate.

5 . The system of claim 1 , wherein the instructions further cause the one or more processors to perform operations of:
determining, by one or more processors, placement of one or more wells for the reservoir responsive to the total dynamic productivity index for each coordinate and minimum spacing between the one or more wells.

6 . The system of claim 4 , wherein the instructions further cause the one or more processors to perform operations of:
determining, by one or more processors, placement of one or more wells for the reservoir responsive to the total dynamic productivity index for each coordinate and minimum spacing between the one or more wells.

7 . The system of claim 1 , wherein the instructions further cause the one or more processors to perform operations of:
generating, by one or more processors, a well placement map using one or more total dynamic productivity index indicators.

8 . A wells placement analysis system, the system comprising:
one or more processors; one or more input/output units adapted to be in communication with the one or more processors; one or more databases adapted to store and associate a plurality of reservoir metrics with a plurality of coordinates to thereby define one or more reservoir databases, the one or more reservoir databases in communication with the one or more processors; one or more non-transitory computer-readable mediums positioned in communication with the one or more processors and having one or more computer programs stored thereon including a set of instructions that when executed by one or more processors cause the one or more processors to perform operations of: determining, by one or more processors, for a reservoir a productivity index for each coordinate using to one or more of the plurality of reservoir metrics associated with the reservoir; generating, by one or more processors, a grid pattern of the reservoir using the productivity index with time values extracted for each coordinate; determining, by one or more processors, a total dynamic productivity index for each coordinate; determining, by one or more processors, placement of one or more wells for the reservoir responsive to determine the total dynamic productivity index for each coordinate; and generating, by one or more processors, a production analysis report for the reservoir, the production analysis report including an assessment of well placement for the reservoir.

9 . The system of claim 8 , wherein the productivity index is calculated using the formula:
PI=q /( P i −P wf ) wherein PI is the productivity index, q is a well production rate in barrels per day, P i is an average block pressure in pounds per square inch, and P wf is a near wellbore flowing pressure in pounds per square inch.

10 . The system of claim 8 , wherein the reservoir has a length of X n , a width of Y n , and depth of Z n ; and wherein the productivity index and the total dynamic production index is determined for each X n ×Y n ×Z n coordinate.

11 . The system of claim 8 , wherein the reservoir has a length of X n and a width of Y n ; and wherein the productivity index and the total dynamic production index is determined for each X n ×Y n coordinate.

12 . The system of claim 8 , wherein determining the placement of the one or more wells is further responsive to minimum spacing between the one or more wells.

13 . The system of claim 12 , wherein the placement of the one or more wells is determined using the following formulas:

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Assignees

• Saudi Arabian Oil Co
• Univ Texas Tech System

Inventors

• Alqahtani Ghazi D
• Soliman Mohamed Y
• De Farias Jr Ismael Regis

Classifications

• G06F30/20

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• E21B43/30 Primary

  Specific pattern of wells, e.g. optimising the spacing of wells · CPC title

• G06Q10/04 Primary

  Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" (market predictions or forecasting for commercial activities G06Q30/0202) · CPC title

• E21B41/0092

  Fixed Constructions · mapped topic

• E21B43/00

  Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (applicable only to water E03B) · CPC title