Compressive seal and pressure control arrangements for downhole

Details Compressive seal and pressure control arrangements for downhole Compressive seal and pressure control arrangements for downhole

1990-04-13

1991-11-26

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between shaft or shaft sleeve and...

Seal

415903, 277 3, F16J 1540

Patent

active

050678744

ABSTRACT:
The disclosure relates to downhole drilling motors which include seal arrangements and pressure control assemblies for staging the pressure between the two seal assemblies, with each pressure control assembly including a rotary element for displacing a piston, and the piston controlling one or several valves.

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