Differential pressure controller

Details Differential pressure controller Differential pressure controller

2005-04-26

2005-04-26

Thompson, Kenn (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S372000, C166S053000, C166S064000

Reexamination Certificate

active

06883606

ABSTRACT:
In a production system for producing oil or gas from a well, the production system including a plunger in well tubing, and a motor valve in a sales line connected to a plunger lubricator which connects to the well tubing, a differential pressure controller system includes: a) a plunger arrival sensor; b) a plunger cycle controller receptive to signals from the plunger arrival sensor and receptive to signals from pressure transducers, for controlling the cycle of the plunger; c) a differential pressure controller; d) a first pressure transducer conductively coupled to the differential pressure controller, for measuring pressure in the well tubing, e) a second pressure transducer conductively coupled to the differential pressure controller for measuring pressure in the sales line; and f) a solenoid valve conductively coupled to the differential pressure controller and connected to the motor valve.

REFERENCES:
patent: 3266574 (1966-08-01), Gandy
patent: 3396793 (1968-08-01), Piper et al.
patent: 3863714 (1975-02-01), Watson, Jr.
patent: 4150721 (1979-04-01), Norwood
patent: 4275790 (1981-06-01), Abercrombie
patent: 4352376 (1982-10-01), Norwood
patent: 4355365 (1982-10-01), McCracken et al.
patent: 4410038 (1983-10-01), Drapp
patent: 4417858 (1983-11-01), Stout
patent: 4461172 (1984-07-01), McKee et al.
patent: 4526228 (1985-07-01), Wynn
patent: 4596516 (1986-06-01), Scott et al.
patent: 4617992 (1986-10-01), Abel
patent: 4633954 (1987-01-01), Dixon et al.
patent: 4664602 (1987-05-01), Gordon
patent: 4685522 (1987-08-01), Dixon et al.
patent: 4898235 (1990-02-01), Enright
patent: 4921048 (1990-05-01), Crow et al.
patent: 4923372 (1990-05-01), Ferguson et al.
patent: 4989671 (1991-02-01), Lamp
patent: 5132904 (1992-07-01), Lamp
patent: 5146991 (1992-09-01), Rogers, Jr.
patent: RE34111 (1992-10-01), Wynn
patent: 5253713 (1993-10-01), Gregg et al.
patent: 5314016 (1994-05-01), Dunham
patent: 5427504 (1995-06-01), Dinning et al.
patent: 5517593 (1996-05-01), Nenniger et al.
patent: 5622223 (1997-04-01), Vasquez
patent: 5636693 (1997-06-01), Elmer
patent: 5735346 (1998-04-01), Brewer
patent: 5785123 (1998-07-01), Lea, Jr.
patent: 5873411 (1999-02-01), Prentiss
patent: 5878817 (1999-03-01), Stastka
patent: 5941305 (1999-08-01), Thrasher et al.
patent: 5957200 (1999-09-01), Majek et al.
patent: 5984013 (1999-11-01), Giacomino et al.
patent: 5996691 (1999-12-01), Norris et al.
patent: 6196324 (2001-03-01), Giacomino et al.
patent: 6209642 (2001-04-01), Streetman
patent: 6241014 (2001-06-01), Majek et al.
patent: 6293341 (2001-09-01), Lemetayer
patent: 6595287 (2003-07-01), Fisher

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