Downhole pressure fluctuating feedback system

Details Downhole pressure fluctuating feedback system Downhole pressure fluctuating feedback system

1987-09-29

1988-10-04

Massie, Jerome

Boring or penetrating the earth

Natural vibration characteristic of an element of boring...

137804, 166249, E21B 724

Patent

active

047750162

ABSTRACT:
An improved feedback system for use with an oscillator carried in a bore hole is provided. The feedback system connects the output legs of a well bore oscillator to the feedback nozzles of the oscillator. It consists of a detachable housing that contains two compliance chambers. Each chamber has a supply port and an exhaust port. Inertance passageways allow fluid to pass through each chamber.

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patent: 3648786 (1972-03-01), Chenoweth
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patent: 3850135 (1974-11-01), Galle
patent: 3860902 (1975-01-01), Galle
patent: 3896889 (1975-07-01), Bouyoucos
patent: 4630689 (1986-12-01), Galle et al.

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