Apparatus for controlling a downhole device

Details Apparatus for controlling a downhole device Apparatus for controlling a downhole device

2011-07-12

2011-07-12

Gay, Jennifer H (Department: 3676)

Wells

Valves, closures or changeable restrictors

Fluid operated

C166S373000, C166S381000, C166S320000, C166S332100, C166S240000, C251S297000

Reexamination Certificate

active

07975767

ABSTRACT:
Apparatus for controlling a downhole device such as a choke, the apparatus comprising a housing, a mandrel connected to the downhole device and moveable within the housing to move the device between different positions, and a detent mechanism to selectively lock the mandrel in one of the positions within the housing. The first and second positions are typically defined by physical stops on the apparatus such as shoulders, or dogs and grooves etc, and are typically placed at set positions that define the different configurations of the device. Thus, the movement of the downhole device is governed by the detent mechanism, rather than by variable factors such as pressure changes.

REFERENCES:
patent: 2853265 (1955-08-01), Clark, Jr.
patent: 3355142 (1967-11-01), Kammerer, Jr. et al.
patent: 3963076 (1976-06-01), Winslow
patent: 5156207 (1992-10-01), Haugen et al.
patent: 6722439 (2004-04-01), Garay et al.
patent: 6782952 (2004-08-01), Garay et al.
patent: 2001/0045290 (2001-11-01), Pringle et al.
patent: 2002/0129942 (2002-09-01), Wetzel et al.

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