Submerged motor-pump unit

Details Submerged motor-pump unit Submerged motor-pump unit

1983-03-30

1984-10-16

Gluck, Richard E.

Pumps

Motor driven

Electric or magnetic motor

184 45R, 310 87, F04B 1700, H02K 510, H02K 512

Patent

active

044772351

ABSTRACT:
A motor-pump unit for submerging down a well, e.g. an oil well, comprises a motor portion driving a pump portion. The motor portion is filled with fluid to prevent ingress of the surrounding medium which the pump portion pumps. The fluid is maintained at a higher pressure than the surrounding medium by including a flexible tank filled with fluid and in communication with the fluid in the motor portion. The flexible tank is compressed both by the surrounding medium and by resilient compression means so that the pressure inside the motor is higher than the surrounding pressure, thereby ensuring any leakage is outwardly from the motor. Down the well the temperature rises causing the fluid to expand, so the flexible tank is left substantially empty when the unit is prepared at the surface prior to lowering. If a large rise in temperature is to be expected, a resilient compression means which provides adequate excess pressure near the top of the well as the unit is lowered, will provide too much excess pressure at operating depths, and similarly compression means which provide adequate excess pressure at operating depths do not supply enough near the surface. This problem is solved by providing compression means which includes a first spring (79) and a second spring (80) so disposed that the flexible tank (66) is subjected to the sum of their resilient thrusts, with the second spring applying its thrust via release means (83 to 88) which cause said second spring to be released and to relax once its displacement reaches a predetermined value.

REFERENCES:
patent: 2011616 (1935-08-01), Clarke
patent: 2236887 (1941-04-01), Arutunoff
patent: 2739252 (1956-03-01), Patterson et al.
patent: 2962612 (1960-11-01), Lung
patent: 3052804 (1962-09-01), Komar
patent: 3255367 (1966-06-01), Schaefer
patent: 3369137 (1965-08-01), Sanger

Affiliated with

Also associated with

Rating

Submerged motor-pump unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Submerged motor-pump unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Submerged motor-pump unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1944023