METHOD FOR MONITORING A SEALING ELEMENT

• US 20150330173A1
• Filed: 05/14/2014
• Published: 11/19/2015
• Est. Priority Date: 05/14/2014
• Status: Active Grant

• Current Assignee: Hydril USA Distribution LLC (GE Vernova, Inc.)
• Original Assignee: General Electric Company
• Inventors: Trivedi, Deepak, Gillette, Gregory Ronald, Ge, Weina, Carbaugh, William Lyle, Invaco, Joseph Alan
• Granted Patent: US 10,190,380 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E21B 33/06 Blow-out preventers , i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers rotating blow-out preventers E21B33/085
• CPC Class Codes: E21B 47/117 Detecting leaks, e.g. from tubing, by pressure testing

Abstract

Embodiments of a method for monitoring an annular packer are provided herein. In some embodiments, a method for monitoring a sealing element of a blowout preventer may include providing a fluid to a chamber disposed within a blowout preventer to actuate a piston disposed within the chamber, wherein the actuation of the piston causes a reduction of an inner diameter of a sealing element; measuring one or more parameters of the fluid via a sensor; receiving data relating to the one or more parameters from the sensor; determining a stiffness of the sealing element utilizing the data relating to the one or more parameters; and determining an amount of degradation of the sealing element by comparing the determined stiffness of the sealing element to a known data profile.

Claims

1. A method for monitoring a sealing element of a blowout preventer, comprising:

providing a fluid to a chamber disposed within a blowout preventer to actuate a piston disposed within the chamber, wherein the actuation of the piston causes a reduction of an inner diameter of a sealing element;

measuring one or more parameters of the fluid via a sensor;

receiving data relating to the one or more parameters from the sensor;

determining a stiffness of the sealing element utilizing the data relating to the one or more parameters; and

determining an amount of degradation of the sealing element by comparing the determined stiffness of the sealing element to known data profiles.

2. The method of claim 1, wherein the one or more sensors are at least one of a flow meter or a pressure transducer.

3. The method of claim 1, wherein measuring the one or more parameters comprises:

measuring at least one of a pressure of the fluid provided to the chamber, a flow rate of the fluid provided to the chamber, or a volume of the fluid provided to the chamber.

4. The method of claim 3, wherein determining an amount of degradation of the sealing element further comprises:

determining a displacement of the piston utilizing the measured flow rate of the fluid provided to the chamber;

determining a force of the piston utilizing the measured pressure of the fluid provided to the chamber; and

determining the stiffness of the sealing element utilizing the displacement of the piston and the force of the piston.

5. The method of claim 1, wherein the known data profile comprises one or more stiffness measurements or analytical simulations of another sealing element.

6. The method of claim 1, wherein the one or more parameters are measured while the piston is actuated.

7. The method of claim 1, wherein the one or more parameters are measured after the piston is actuated from a first position to a second position.

8. The method of claim 1, wherein the sealing element is an annular packer.

9. The method of claim 1, wherein the known data profile comprises a data profile obtained from one or more material property tests performed on materials utilized to fabricate the sealing element.

10. The method of claim 1, wherein the known data profile is obtained from a finite element analysis performed on a model of the sealing element.

11. A computer readable medium, having instructions stored thereon which, when executed, causes a method of method for monitoring a sealing element of a blowout preventer to be performed, the method comprising:

providing a fluid to a chamber disposed within a blowout preventer to actuate a piston disposed within the chamber, wherein the actuation of the piston causes a reduction of an inner diameter of a sealing element;

measuring one or more parameters of the fluid via a sensor;

receiving data relating to the one or more parameters from the sensor;

determining a stiffness of the sealing element utilizing the data relating to the one or more parameters; and

determining an amount of degradation of the sealing element by comparing the determined stiffness of the sealing element to a known data profile.

12. The computer readable medium of claim 11, wherein the one or more sensors are at least one of a flow meter or a pressure transducer.

13. The computer readable medium of claim 11, wherein measuring the one or more parameters comprises:

measuring at least one of a pressure of the fluid provided to the chamber, a flow rate of the fluid provided to the chamber, or a volume of the fluid provided to the chamber.

14. The computer readable medium of claim 13, wherein determining an amount of degradation of the sealing element comprises:

determining a displacement of the piston utilizing the measured flow rate of the fluid provided to the chamber;

determining a force of the piston utilizing the measured pressure of the fluid provided to the chamber; and

determining a stiffness of the sealing element utilizing the displacement of the piston and the force of the piston.

15. The computer readable medium of claim 14, wherein the known data profile comprises one or more stiffness measurements or simulations of another sealing element.

16. The computer readable medium of claim 11, wherein the one or more parameters are measured while the piston is actuated.

17. The computer readable medium of claim 11, wherein the one or more parameters are measured after the piston is actuated from a first position to a second position.

18. The computer readable medium of claim 11, wherein the known data profile is obtained from a finite element analysis performed on a model of the sealing element.

19. The computer readable medium of claim 11, wherein the sealing element is an annular packer.

20. The computer readable medium of claim 11, wherein the known data profile comprises a data profile obtained from one or more material property tests performed on materials utilized to fabricate the sealing element and/or from a finite element analysis performed on a model of the sealing element.