Structure with feed through

Patent metadata

Field	Value
Publication number	US-10370928-B2
Application number	US-201414893810-A
Country	US
Kind code	B2
Filing date	May 30, 2014
Priority date	May 30, 2013
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A technique provides protection against unwanted conditions in wellhead structures and other structures. According to the technique, a system provides a feed through in a wellhead structure or other type of structure. The feed through may accommodate a communication line routed therethrough. A closing device is positioned in the structure at a location to enable closing of the feed through via the closing device. Additionally, a condition-sensitive device is operatively engaged with the closing device to initiate actuation of the closing device once the condition-sensitive device is exposed to a predetermined condition. Upon exposure to the predetermined condition, the condition-sensitive device initiates closing of the feed through via the closing device.

First claim

What is claimed is:

1. A system, comprising:
a wellhead structure of a wellhead positioned above a well, the wellhead structure having a feed through;
a communication line extending through the feed through;
a condition-sensitive device mounted to the wellhead structure, the condition-sensitive device being automatically actuated upon exposure to a predetermined condition; and
a closing device positioned at the feed through in operative engagement with the condition-sensitive device such that automatic actuation of the condition-sensitive device upon reaching the predetermined condition causes the closing device to close the feed through, wherein the closing device shears the communication line when the closing device closes the feed through.

2. The system as recited in claim 1 , wherein the condition-sensitive device comprises a temperature-sensitive device mounted to the wellhead structure, the temperature-sensitive device being automatically actuated upon exposure to a predetermined temperature.

3. The system as recited in claim 1 , wherein the communication line comprises an optical fiber.

4. The system as recited in claim 1 , wherein the communication line comprises an electrical conductor.

5. The system as recited in claim 1 , wherein the communication line comprises a hydraulic line.

6. The system as recited in claim 1 , wherein the closing device is spring biased to close the feed through.

7. The system as recited in claim 2 , wherein the temperature-sensitive device comprises a shear member.

8. The system as recited in claim 2 , wherein the temperature-sensitive device melts upon reaching the predetermined temperature.

9. The system as recited in claim 1 , wherein the closing device is rotated to close the feed through.

10. The system as recited in claim 1 , wherein the closing device is translated to close the feed through.

11. A method, comprising:
providing a feed through in a wellhead structure of a wellhead positioned above a well;
routing a communication line through the feed through;
positioning a closing device in the wellhead structure at a location to enable closing of the feed through via the closing device; and
using a temperature-sensitive device to hold the closing device in an open position until a predetermined temperature is reached, the predetermined temperature causing the temperature-sensitive device to initiate closing of the feed through via the closing device, wherein the closing device shears the communication line when the closing device closes the feed through.

12. The method as recited in claim 11 , wherein positioning comprises positioning the closing device for rotation between an open position and a closed position.

13. The method as recited in claim 11 , wherein positioning comprises positioning the closing device for translation between an open position and a closed position.

14. The method as recited in claim 11 , wherein using the temperature-sensitive device comprises using a degradable pin to hold the closing device in an open position until the predetermined temperature is reached.

15. The method as recited in claim 11 , wherein using the temperature-sensitive device comprises using a degradable disk to hold the closing device in an open position until the predetermined temperature is reached.

16. The method as recited in claim 11 , further comprising shearing a communication line located in the feed through while closing the feed through.

17. A method, comprising:
providing a feed through in a wellhead structure of a wellhead positioned above a well;
routing a communication line through the feed through;
positioning a closing device in the wellhead structure at a location to enable closing of the feed through via the closing device; and
using a condition-sensitive device to initiate actuation of the closing device to shear the communication line and to close the feed through once the condition-sensitive device is sufficiently exposed to a predetermined condition.

18. The method as recited in claim 17 , wherein using comprises using a temperature-sensitive device having a material which degrades at a predetermined temperature.

19. The method as recited in claim 17 , wherein the communication line comprises an optical fiber, an electrical conductor, or a hydraulic line.

20. The method as recited in claim 17 , wherein the predetermined condition comprises a temperature condition.

Assignees

• Schlumberger Technology Corp

Inventors

• Noakes David
• Graham Robert
• Wilson Colin

Classifications

• E21B33/068 Primary

  having provision for introducing objects or fluids into, or removing objects from, wells (cementing-heads E21B33/05) · CPC title

• E21B29/04 Primary

  Cutting of wire lines or the like (E21B29/02 takes precedence) · CPC title

• E21B33/063

  for shearing drill pipes (cutting of wireline E21B29/04) · CPC title

• E21B47/065

  Fixed Constructions · mapped topic

• E21B47/07

  Temperature · CPC title