BOP health monitoring system and method

Patent metadata

Field	Value
Publication number	US-11078742-B2
Application number	US-201916410969-A
Country	US
Kind code	B2
Filing date	May 13, 2019
Priority date	May 13, 2018
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

A blowout preventer (BOP) health monitoring system includes a controller having a tangible, machine readable-medium storing one or more instructions executable by a processor. The one or more instructions are configured to receive feedback from a sensor, where the feedback is indicative of a pressure within a BOP stack over time, determine a position of a plurality of components of the BOP stack, determine a start point and an end point of a pressure test based on the feedback, determine a decay and a hold duration of the pressure test based on the feedback, the start point, and the end point, determine a health index of the BOP stack based on the decay and the hold duration, and provide an output indicative of a condition of the BOP stack based on the health index.

First claim

The invention claimed is:

1. A blowout preventer (BOP) health monitoring system, comprising:
a controller having a tangible, machine readable-medium storing one or more instructions executable by a processor, wherein the one or more instructions are configured to:
receive feedback from a sensor, wherein the feedback is indicative of a pressure within a BOP stack over time;
determine a position of a plurality of components of the BOP stack;
determine a start point and an end point of a pressure test based on the feedback;
determine a decay and a hold duration of the pressure test based on the feedback, the start point, and the end point;
determine a health index of the BOP stack based on the decay and the hold duration; and
provide an output indicative of a condition of the BOP stack based on the health index.

2. The system of claim 1 , wherein the one or more instructions are configured to determine one or more components of the plurality of components of the BOP stack being tested by the pressure test based on the position of the plurality of components of the BOP stack.

3. The system of claim 2 , wherein the one or more instructions are configured to modify a target test configuration plan of the BOP stack when the health index exceeds a threshold value.

4. The system of claim 3 , wherein the one or more instructions are configured to modify the target test configuration plan by performing a second pressure test that isolates a component of the one or more components to determine a second health index indicative of wear incurred by the component.

5. The system of claim 3 , wherein the one or more instructions are configured to generate the target test configuration plan of the BOP health monitoring system based on a structure of the BOP stack, the plurality of components of the BOP stack, a flow path of pressurized fluid directed toward and away from the BOP stack, or any combination thereof.

6. The system of claim 5 , wherein the target test configuration plan of the BOP health monitoring system is configured to minimize a total number of pressure tests performed to test each of the component of the plurality of components of the BOP stack.

7. The system of claim 6 , wherein the one or more instructions are configured to eliminate pressure tests from the target test configuration plan that do not test any component of the plurality of components of the BOP stack.

8. The system of claim 5 , wherein the one or more instructions are configured to generate a matrix for each pressure test of the target test configuration plan that identifies tested components of the plurality of components, non-tested components of the plurality of components, and extraneous components of the plurality of components for each pressure test of the target test configuration plan.

9. The system of claim 1 , wherein the feedback from the sensor is indicative of the pressure within an annulus of the BOP stack.

10. The system of claim 1 , wherein the one or more instructions are configured to determine the health index of the BOP stack via a comparison between the decay and a decay threshold, a comparison between the hold duration and a hold duration threshold, or both.

11. The system of claim 1 , wherein the output indicative of a condition of the BOP stack based on the health index comprises suggested timing for performing maintenance on or performing troubleshooting of the BOP stack.

12. A system, comprising:
a blowout preventer (BOP) stack comprising one or more valves and a BOP;
a sensor configured to monitor a pressure within the BOP stack; and
a BOP health monitoring system comprising a controller having a tangible, machine readable-medium storing one or more instructions executable by a processor, wherein the one or more instructions are configured to:
receive feedback from the sensor, wherein the feedback is indicative of a pressure within the BOP stack over time;
determine a start point and an end point of a pressure test based on the feedback;
determine a decay and a hold duration of the pressure test based on the feedback, the start point, and the end point;
determine a health index of the BOP stack based on the decay and the hold duration; and
provide an output indicative of a condition of the BOP stack based on the health index.

13. The system of claim 12 , wherein the one or more instructions are configured to filter the feedback to reduce noise, erroneous data, or both.

14. The system of claim 12 , wherein the one or more instructions are configured to interpolate the feedback to determine a local decay of the pressure test.

15. The system of claim 14 , wherein the one or more instructions are configured to further determine the health index based on the local decay.

16. The system of claim 12 , wherein the one or more instructions are configured to generate a target test configuration plan of the BOP health monitoring system based on a structure of the BOP stack, components included in the BOP stack, a flow path of pressurized fluid directed toward and away from the BOP stack, or any combination thereof.

17. A method, comprising:
receiving feedback from a sensor indicative of a pressure within a BOP stack over time;
determining a start point and an end point of a pressure test based on the feedback;
determining a decay and a hold duration of the pressure test based on the feedback, the start point, and the end point;
determining a health index of the BOP stack based on the decay and the hold duration; and
providing an output indicative of a condition of the BOP stack based on the health index.

18. The method of claim 17 , comprising receiving second feedback indicative of a position of a plurality of components of the BOP stack and determining one or more components of the plurality of components of the BOP stack that are being tested by the pressure test based on the second feedback.

19. The method of claim 18 , comprising modifying a target test configuration plan of the BOP stack when the health index exceeds a threshold value.

20. The method of claim 19 , wherein modifying the target test configuration plan comprises performing a second pressure test that isolates a component of the one or more components to determine a second health index indicative of wear incurred by the component.

Assignees

• Cameron Int Corp
• Schlumberger Technology Corp

Inventors

• Park Se Un
• Bade Rajesh Kumar
• Barker Daniel
• Viassolo Daniel Edgardo

Classifications

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B33/061 Primary

  Ram-type blow-out preventers, e.g. with pivoting rams · CPC title

• G01M13/003

  Machine valves (testing valves for fluid tightness G01M3/00) · CPC title

• E21B33/06 Primary

  Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} · CPC title