Coriolis pump-off controller

Details Coriolis pump-off controller Coriolis pump-off controller

1996-04-10

1998-10-20

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166 53, 166 685, 166 911, 166369, 7315261, 417 36, E21B 4312, E21B 4700, E21B 4710

Patent

active

058232621

ABSTRACT:
The operation of an oil well pumping unit control system (20, 200) is governed by a computerized automated control unit (88) that receives flow rate measurements from a Coriolis flow meter (28). The control unit causes production from a beam pumping unit (22) to cease when measurements from the Coriolis flow meter indicate a decline in the pump efficiency. The decline in pump efficiency indicates that a production fluid level (136) in the production tubing (108) has fallen below the uppermost point of travel for the plunger (122). Production from the well is, accordingly, shut-in to afford the reservoir sufficient time to build the pressure and corresponding fluid level that is required to recommence production operations.

REFERENCES:
patent: Re34111 (1992-10-01), Wynn
patent: 4232736 (1980-11-01), Pillette
patent: 4633954 (1987-01-01), Dixon et al.
patent: 4738313 (1988-04-01), McKee
patent: 4854164 (1989-08-01), Rhoads
patent: 5064349 (1991-11-01), Turner et al.
patent: 5146991 (1992-09-01), Rogers, Jr.
patent: 5316085 (1994-05-01), Dawson

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