Physical parameter projection for wellbore drilling

Patent metadata

Field	Value
Publication number	US-12018555-B2
Application number	US-202017054629-A
Country	US
Kind code	B2
Filing date	Mar 26, 2020
Priority date	Mar 26, 2020
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

Aspects and features of this disclosure relate to projecting physical drilling parameters to control a drilling operation. A computing system applies Bayesian optimization to a model incorporating the input data using varying values for an adverse drilling factor to produce a target function. The computing system determines a minimum value for the target function. The computing system provides a projected value for the physical drilling parameters based on the minimum value. The computing system generates an alert responsive to determining that the projected value for the physical drilling parameters exceeds a prescribed limit.

First claim

What is claimed is:

1. A system comprising:
a processor; and
a non-transitory memory device communicatively coupled to the processor comprising instructions that are executable by the processor to cause the processor to perform operations comprising:
receiving input data at least in part for an offset wellbore, the input data including a plurality of downhole measures of downhole condition;
applying Bayesian optimization to a model incorporating the input data, the Bayesian optimization using varying values for an adverse drilling factor to produce a target function that includes groove depth that is based on casing wear volume, the adverse drilling factor comprising a casing wear factor that is based on a friction factor;
determining a minimum value for the target function by minimizing a root-mean-square target function including the groove depth;
generating a projected value for a physical drilling parameter of a drilling operation based on the minimum value, the projected value indicating an efficacy of the drilling operation;
determining that the projected value for the physical drilling parameter exceeds a prescribed limit; and
in response to determining that the projected value for the physical drilling parameter exceeds the prescribed limit, adjusting the physical drilling parameter of a drilling tool to conform to the projected value to control the drilling operation.

2. The system of claim 1 wherein the target function includes torque and drag.

3. The system of claim 1 wherein the physical drilling parameter is a real-time drilling parameter, and wherein the operations further comprise generating an alarm responsive to determining that the projected value exceeds the prescribed limit over a selected time interval.

4. The system of claim 3 wherein the operations further comprise adjusting a parameter of a drill bit to reduce the physical drilling parameter to a value less than the prescribed limit.

5. The system of claim 1 wherein the physical drilling parameter is a static drilling factor, and wherein the operations further comprise prompting a user for an alteration to a well design.

6. A method of predictive friction and wear estimation for wellbore drilling, the method comprising:
receiving, by a processing device, input data at least in part for an offset wellbore, the input data including a plurality of downhole measures of downhole condition;
applying, by the processing device, Bayesian optimization to a model incorporating the input data, the Bayesian optimization using varying values for an adverse drilling factor to produce a target function that includes groove depth that is based on casing wear volume, the adverse drilling factor comprising a casing wear factor that is based on a friction factor;
determining a minimum value for the target function by minimizing a root-mean-square target function including the groove depth;
generating, by the processing device, a projected value for physical drilling parameter of a drilling operation based on the minimum value, the projected value indicating an efficacy of the drilling operation; and
determining that the projected value for the physical drilling parameter exceeds a prescribed limit; and
in response to determining that the projected value for the physical drilling parameter exceeds the prescribed limit, adjusting the physical drilling parameter of a drilling tool to conform to the projected value to control the drilling operation.

7. The method of claim 6 wherein the target function includes torque and drag.

8. The method of claim 6 wherein the physical drilling parameter is a real-time drilling parameter, and wherein the method further comprises generating an alarm responsive to determining that the projected value exceeds the prescribed limit over a selected time interval.

9. The method of claim 6 wherein the adverse drilling factor is a static drilling factor, and wherein the method further comprises prompting a user for an alteration to a well design.

10. A non-transitory computer-readable medium that includes instructions that are executable by a processing device for causing the processing device to perform operations related to providing adverse drilling factor projection, the operations comprising:
receiving input data at least in part for an offset wellbore, the input data including a plurality of downhole measures of downhole condition;
applying Bayesian optimization to a model incorporating the input data, the Bayesian optimization using varying values for an adverse drilling factor to produce a target function that includes groove depth that is based on casing wear volume, the adverse drilling factor comprising a casing wear factor that is based on a friction factor;
determining a minimum value for the target function by minimizing a root-mean-square target function including the groove depth;
generating a projected value for physical drilling parameter of a drilling operation based on the minimum value, the projected value indicating an efficacy of the drilling operation; and
determining that the projected value for the physical drilling parameter exceeds a prescribed limit; and
in response to determining that the projected value for the physical drilling parameter exceeds the prescribed limit, adjusting the physical drilling parameter of a drilling tool to conform to the projected value to control the drilling operation.

11. The non-transitory computer-readable medium of claim 10 wherein the target function includes torque and drag.

12. The non-transitory computer-readable medium of claim 10 wherein the physical drilling parameter is a real-time drilling parameter, and wherein the operations further comprise generating an alarm responsive to determining that the projected value exceeds the prescribed limit over a selected time interval.

13. The non-transitory computer-readable medium of claim 12 wherein the operations further comprise adjusting a parameter of a drill bit to reduce the physical drilling parameter to a value less than the prescribed limit.

14. The non-transitory computer-readable medium of claim 10 wherein the adverse drilling factor is a static drilling factor, and wherein the operations further comprise prompting a user for an alteration to a well design.

Assignees

• Landmark Graphics Corp

Inventors

• Wesley Avinash
• Samuel Robello
• Mittal Manish K

Classifications

• G06F30/20

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

• E21B2200/20

  Computer models or simulations, e.g. for reservoirs under production, drill bits · CPC title

• E21B47/007

  Measuring stresses in a pipe string or casing (for locating blocked portions of pipes E21B47/09) · CPC title

• E21B2200/22

  Fuzzy logic, artificial intelligence, neural networks or the like · CPC title

• E21B12/02

  Wear indicators · CPC title