Fluid operated vibratory jar with rotating bit

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

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Details

173 78, 173110, 175106, 175305, 175322, E21B 100, E21B 414

Patent

active

049586912

ABSTRACT:
A downhole oil well tool uses impact, reciprocal drilling and an improved rotating bit or like working member, receiving both fluid pressure and weight from an elongated pipe string with a flow bore in order to drive the tool. A valve within tool housing controls fluid pressure to the working end so that the tool pressures up, then releases pressure through the working member allowing the pipe string to load the bit, creating impact. A clutch rotates the working member during drilling to prevent imprint upon the formation.

REFERENCES:
patent: 1654833 (1928-01-01), Rice, Jr.
patent: 1934252 (1933-11-01), Baker
patent: 2755069 (1956-07-01), Mosby
patent: 3946819 (1976-03-01), Hipp
patent: 3978931 (1976-09-01), Sudnishnikov et al.
patent: 4209070 (1980-06-01), Sudnishnikov et al.
patent: 4462471 (1984-07-01), Hipp

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