IP Library › Granted Patent US 7,934,545
Granted Patent B2
US 7,934,545 · App. 12/910,374 · Granted May 3, 2011

Rotating control head leak detection systems

Assignee: Weatherford/Lamb, Inc.
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Quick Facts
Patent No.
US 7,934,545
App. No.
12/910,374
Granted
May 3, 2011
Kind
B2
Abstract

A system and method to detect leaks in the rotating control head and a latching system to latch the rotating control head to a housing is disclosed.

Claims (71)

1. A method for comparing fluid to and from a latch assembly for latching a rotating control head, comprising the steps of:

delivering a fluid to a first side of a piston for moving the piston from a first position to a second position;

measuring a volume of fluid delivered to the first side of the piston to produce a measured first fluid volume value;

communicating the fluid from a second side of the piston;

measuring a volume of fluid from the second side of the piston to produce a measured second fluid volume value; and

comparing the measured first fluid volume value to the measured second fluid volume value.

2. The method of claim 1 , wherein the step of measuring a volume of fluid to the first side of the piston comprising the steps of:

measuring the fluid with a totalizing flow meter; and

reading the totalizing flow meter to produce the measured fluid volume value.

3. A method for comparing fluid to and from a latch assembly for latching a rotating control head, comprising the steps of:

delivering a fluid to a first side of a piston for moving the piston from a first position to a second position;

measuring a volume of fluid delivered to the first side of the piston with a first totalizing flow meter to produce a measured first fluid volume value;

communicating the fluid from a second side of the piston;

measuring a volume of fluid from the second side of the piston with a second totalizing flow meter to produce a measured second fluid volume value; and

comparing the measured first fluid volume value to the measured second fluid volume value.

4. A method for use of a rotating control head having a bearing assembly for rotating while drilling, comprising the steps of:

positioning a chamber in the bearing assembly;

forming a first opening into the chamber;

forming a second opening into the chamber;

delivering a fluid to the first opening;

communicating the fluid from the second opening;

measuring a flow value of the fluid to the first opening;

measuring a flow value of the fluid from the second opening; and

comparing the measured flow value to the first opening to the measured flow value from the second opening.

5. The method of claim 4 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow rate to the first opening with a first flow meter; and

reading the first flow meter to produce a measured first flow rate value.

6. The method of claim 5 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow rate from the second opening with a second flow meter; and

reading the second flow meter to produce a measured second flow rate value.

7. The method of claim 6 , wherein the step of comparing the measured flow value comprising the step of:

comparing the measured first flow rate value to the first opening to the measured second flow rate value from the second opening.

8. The method of claim 4 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow volume with a first flow meter; and

reading the first flow meter to produce a measured first flow volume value.

9. The method of claim 8 , wherein the step of measuring a flow value of the fluid from the second opening comprising the steps of:

measuring the flow volume with a second flow meter; and

reading the second flow meter to produce a measured second flow volume value.

10. The method of claim 9 , wherein the step of comparing the measured flow value comprising the step of:

comparing the measured first flow volume value to the measured second flow volume value.

11. The method of claim 4 , further comprising the step of:

determining if the measured flow value to the first opening is in a predetermined tolerance to the measured flow value from the second opening.

12. The method of claim 11 , further comprising the step of:

activating an alarm if the measured flow value is determined to be out of a predetermined tolerance to the measured flow value from the second opening.

13. The method of claim 11 , further comprising the step of:

displaying a text message on a monitor if the measured flow value is determined to be out of a predetermined tolerance to the measured flow value from the second opening.

14. A method for use in a drilling operation, comprising the steps of:

positioning a chamber in a housing;

forming a first opening into the chamber;

forming a second opening into the chamber;

delivering a fluid to the first opening;

communicating the fluid from the second opening;

measuring a flow value of the fluid to the first opening;

measuring a flow value of the fluid from the second opening; and

comparing the measured flow value to the first opening to the measured flow value from the second opening.

15. The method of claim 14 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow rate to the first opening with a first flow meter; and

reading the first flow meter to produce a measured first flow rate value.

16. The method of claim 15 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow rate from the second opening with a second flow meter; and

reading the second flow meter to produce a measured flow rate value.

17. The method of claim 16 , wherein the step of comprising the measured flow value comprising the step of:

comparing the measured first flow rate value to the first opening to the measured second flow rate value from the second opening.

18. The method of claim 14 , wherein the step of measuring a flow value of the fluid to the first opening comprising the steps of:

measuring the flow volume with a first flow meter; and

reading the first flow meter to produce a measured first flow volume value.

19. The method of claim 18 , wherein the step of measuring a flow value of the fluid from the second opening comprising the steps of:

measuring the flow volume with a second flow meter; and

reading the second flow meter to produce a measured second flow volume value.

20. The method of claim 19 , wherein the step of comparing the measured flow value comprising the step of:

comparing the measured first flow volume value to the measured second flow volume value.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 4, 2014
From: WEATHERFORD/LAMB, INC.
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 034526/0272 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 22, 2010
From: BAILEY, THOMAS F.; CHAMBERS, JAMES W.; HANNEGAN, DON M.; GRAVOUIA, MARK F.
To: WEATHERFORD/LAMB, INC.
Reel/Frame 025183/0117 →
Continuity (4)
Division 11366078 · Mar 2, 2006
Continuation In Part 10995980 · Nov 23, 2004
Continuation In Part 10285336 · Oct 31, 2002
Related Publication 20110036629A1 · Feb 17, 2011