Eccentric safety valve

• US 8,869,881 B2
• Filed: 09/20/2013
• Issued: 10/28/2014
• Est. Priority Date: 11/22/2010
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Vick, James D. Jr., Williamson, Jimmie R. Jr., Scott, Bruce E.
• Primary Examiner(s): Neuder, William P
• Application Number:
  US14/033,244
• Publication Number:
  US 20140020887A1
• Time in Patent Office: 403 Days
• Field of Search: 166/66.5
• US Class Current: 166/66.5
• CPC Class Codes: E21B 2200/05 Flapper valves
• CPC Class Codes: E21B 34/066 electrically actuated

Abstract

A safety valve for use in a subterranean well can include a housing assembly having a flow passage extending longitudinally through the housing assembly. An outer diameter of the housing assembly is eccentric relative to the flow passage. A well tool can include a magnetic coupling between magnet devices. One magnet device includes a series of magnets which are unequally spaced circumferentially about the other magnet device. Another safety valve can include a longitudinally extending flow passage, a closure device which selectively permits and prevents flow through the flow passage, and an outer diameter which is eccentric relative to the flow passage.

Claims

1. A well tool, comprising:

a magnetic coupling between first and second magnet devices, wherein the second magnet device includes a series of magnets which are unequally spaced circumferentially about the first magnet device, wherein a first circumferential spacing between the magnets is less than a second circumferential spacing between the magnets, wherein the second magnet device is disposed within a wall of a pressure bearing housing, and wherein at least one line is positioned in the second circumferential spacing between the magnets.

2. A well tool, comprising:

a magnetic coupling between first and second magnet devices, wherein the second magnet device includes a series of magnets which are unequally spaced circumferentially about the first magnet device, wherein a first circumferential spacing between the magnets is less than a second circumferential spacing between the magnets, and wherein at least one biasing device is positioned in the second circumferential spacing between the magnets.

3. A well tool, comprising:

a magnetic coupling between first and second magnet devices, wherein the second magnet device includes a series of magnets which are unequally spaced circumferentially about the first magnet device; and

a housing assembly having a flow passage extending longitudinally through the housing assembly, wherein an outer diameter of the housing assembly is eccentric relative to the flow passage.

4. The well tool of claim 3, wherein the housing assembly has at least one longitudinal recess in an outer surface of the housing, and at least one line extending along the recess.