Multi-cycle single line switch

Details Multi-cycle single line switch Multi-cycle single line switch

2008-02-29

2010-06-08

Neuder, William P (Department: 3676)

Wells

Valves, closures or changeable restrictors

Fluid operated

C166S313000, C166S319000, C166S320000

Reexamination Certificate

active

07730953

ABSTRACT:
Systems and methods for selectively operating multiple hydraulic pressure controlled devices (PCDs) within a borehole using a common inflow and outflow line and a common cycling line. A control system is used wherein each of the PCDs is operationally associated with a separate sleeve controller. The sleeve controller for each PCD controls whether the individual PCD can be actuated by hydraulic pressure variations in the common inflow and outflow lines.

REFERENCES:
patent: 6352119 (2002-03-01), Patel
patent: 6948561 (2005-09-01), Myron
patent: 2002/0014338 (2002-02-01), Purkis et al.
patent: 2007/0163774 (2007-07-01), Hosatte et al.
patent: 2009/0065218 (2009-03-01), Loretz et al.

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