Pump control system for a downhole motor-pump assembly and metho

Details Pump control system for a downhole motor-pump assembly and metho Pump control system for a downhole motor-pump assembly and metho

1990-11-09

1993-03-16

Bertsch, Richard A.

Pumps

Processes

417417, 417411, 417448, 166 66, F04B 4706, F04B 4906

Patent

active

051939851

ABSTRACT:
A new and improved control system for monitoring and controlling the operation of a downhole linear d.c. motor-pump assembly and a method of using it for producing a sufficient reciprocating pumping action to lift well fluid through the producing tubing of a well to the ground surface. The system includes a surface monitoring station that is in radio communication with a plurality of remote downhole motor-pump assemblies. Each motor-pump assembly has a surface motor controller, a downhole motor-pump cartiridge unit that is adapted to be received in a downhole cartridge sleeve assembly that maintains the cartridge unit in a stationary position for pumping purposes. The motor-pump cartridge unit may be raised or lowered by a control cable within the production tubing for helping to facilitate the repair or replacement of the motor-pump cartridge unit. The motor-pump assembly also includes a plurality of sensors for monitoring the conditions of the well downhold as well as the efficiency of the motor-pump cartridge unit.

REFERENCES:
patent: 4350478 (1982-09-01), Oldershaw et al.
patent: 4477235 (1984-10-01), Gilmer et al.
patent: 4687054 (1987-08-01), Russell et al.
patent: 5049046 (1991-09-01), Escue et al.

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