Well placement and fracture design optimization system, method and computer program product

Patent metadata

Field	Value
Publication number	US-10060226-B2
Application number	US-201214426231-A
Country	US
Kind code	B2
Filing date	Sep 7, 2012
Priority date	Sep 7, 2012
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A well design system that utilizes geological characteristics and fracture growth behavior along of a vertical stratigraphic column of the formation in order to optimize well placement and fracture stimulation designs for the entire formation.

First claim

What is claimed is:

1. A computer-implemented method of optimizing well design and placement, the method comprising:
modeling, by a computer system, subsurface strata of a geological formation;
extracting, by the computer system, a representative snapshot of the subsurface strata along a vertical column, based on the modeling;
analyzing, by the computer system, the representative snapshot of the subsurface strata in order to determine subsurface properties along a true vertical stratigraphic depth (“TVSD”) of the subsurface strata;
modeling fracture growth behavior for one or more fracture initiation points along the TVSD of the subsurface strata, based on the analysis;
determining, by the computer system, a wellbore design including an optimal path of a wellbore to be drilled within the subsurface strata, based upon the modeled fracture growth behavior for the one or more fracture initiation points along the TVSD; and
drilling the wellbore along the optimal path with the subsurface strata in accordance with the wellbore design.

2. A computer-implemented method as defined in claim 1 , wherein the wellbore is a horizontal or high angle wellbore.

3. A computer-implemented method as defined in claim 1 , wherein modeling fracture growth behavior further comprises determining a position of the one or more fracture initiation points along the TVSD.

4. A computer-implemented method as defined in claim 1 , wherein determining the wellbore design further comprises determining a fracture stimulation design.

5. A computer-implemented method as defined in claim 4 , wherein determining the fracture stimulation design further comprises:
mapping the one or more fracture initiation points from the TVSD onto corresponding locations along the wellbore within the subsurface strata; and
determining at least one of fracture injection rates, fracture fluid types, or proppant types.

6. A computer-implemented method as defined in claim 4 , further comprising: performing stimulation operations along the wellbore, based on the fracture stimulation design.

7. A computer-implemented method as defined in claim 1 , wherein determining the wellbore design further comprises:
determining a location of a high quality reservoir section within the subsurface strata; and
determining optimal placement of the wellbore along the high quality reservoir section.

8. A computer-implemented method as defined in claim 1 , wherein modeling the fracture growth behavior of the one or more fracture initiation points further comprises modeling at least one of a fracture length, fracture height, fracture weight, or proppant conductivity of the one or more fracture initiation points.

9. A computer-implemented method as defined in claim 1 , further comprising:
detecting an alteration of the wellbore design as the wellbore is drilled along the optimal path within the subsurface strata; and
responsive to the detection, updating the wellbore design based upon the alteration.

10. A computer-implemented method as defined in claim 1 , further comprising generating an alert indicating a danger situation associated with the wellbore design.

11. A system comprising:
a processor; and
a memory coupled to the processor, the memory storing instructions, which, when executed by the processor, cause the processor to:
model subsurface strata of a geological formation;
extract a representative snapshot of the subsurface strata along a vertical column;
analyze the representative snapshot of the subsurface strata in order to determine subsurface properties along a true vertical stratigraphic depth (“TVSD”) of the subsurface strata;
model fracture growth behavior for one or more fracture initiation points along the TVSD of the subsurface strata, based on the analysis; and
determine a wellbore design including an optimal path of a wellbore to be drilled within the subsurface strata, based upon the modeled fracture growth behavior for the one or more fracture initiation points along the TVSD, wherein the wellbore is drilled along the optimal path within the subsurface strata in accordance with the wellbore design.

12. A system as defined in claim 11 , wherein the wellbore is a horizontal or high angle wellbore.

13. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to determine a position of the one or more fracture initiation points along the TVSD.

14. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to determine a fracture stimulation design.

15. A system as defined in claim 14 , wherein the instructions, when executed by the processor, further cause processor to:
map the one or more fracture initiation points from the TVSD onto corresponding locations along the wellbore within the subsurface strata; and
determine at least one of fracture injection rates, fracture fluid types, or proppant types.

16. A system as defined in claim 14 , wherein the fracture stimulation design is utilized to perform stimulation operations along the wellbore.

17. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to:
determine a location of a high quality reservoir section within the subsurface strata; and
determine optimal placement of the wellbore along the high quality reservoir section.

18. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to model at least one of a fracture length, fracture height, fracture weight, or proppant conductivity of the one or more fracture initiation points.

19. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to:
detect an alteration of the wellbore design as the wellbore is drilled along the optimal path within the subsurface strata; and
responsive to the detection, update the wellbore design based upon the alteration.

20. A system as defined in claim 11 , wherein the instructions, when executed by the processor, further cause the processor to generate an alert indicating a danger situation associated with the wellbore design.

21. A non-transitory computer-readable medium comprising instructions, which, when executed by at least one processor, cause the processor to:
model subsurface strata of a geological formation;
extract a representative snapshot of the subsurface strata along a vertical column;
analyze the representative snapshot of the subsurface strata in order to determine subsurface properties along a true vertical stratigraphic depth (“TVSD”) of the subsurface strata;
model fracture growth behavior for one or more fracture initiation points along the TVSD of the subsurface strata, based on the analysis; and
determine a wellbore design including an optimal path of a wellbore to be drilled within the subsurface strata, based upon the modeled fracture growth behavior for the one or more fracture initiation points along the TVSD, wherein the wellbore is drilled along the optimal path within the subsurface strata in accordance with the wellbore design.

22. A non-transitory computer-readable medium as defined in claim 21 , wherein the instructions, when executed by the processor, further cause the processor to determine a position of the one or more fracture initiation points along the TVSD.

23. A non-transitory computer-readable

Assignees

• Dusterhoft Ronald Glen
• Paulk Marty
• Landmark Graphics Corp

Inventors

• Dusterhoft Ronald Glen
• Paulk Marty

Classifications

• G06F30/20

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

• E21B43/305

  comprising at least one inclined or horizontal well · CPC title

• E21B43/26

  by forming crevices or fractures · CPC title

• G01V99/005

  Physics · mapped topic

• E21B41/0092 Primary

  Fixed Constructions · mapped topic