Down-hole earth drilling motor capable of free circulation

Details Down-hole earth drilling motor capable of free circulation Down-hole earth drilling motor capable of free circulation

1978-06-12

1980-02-12

Leppink, James A.

Boring or penetrating the earth

With bit wear signal generating

175107, 415502, 418 48, E21B 1300, E21B 106

Patent

active

041879180

ABSTRACT:
There is disclosed a down-hole drilling motor having a connection to the drill bit, such that, when desirable or necessary, fluid may be circulated in the bore by means of the motor to clean out undue accumulation of cuttings, or for other reasons, while at the same time the bit is stopped, thereby saving wear on the bit and bit drive parts. When the motor is disconnected from the drill shaft, the drill shaft may be locked to the drill pipe so that the bit may be rotated by turning the drill pipe from the top of the bore with the conventional rotary table to permit the operator to drill his way out if the drill is stuck or to roll the bit out from under a ledge under which it might be caught during drilling.

REFERENCES:
patent: 1727267 (1929-09-01), Diehl
patent: 2553548 (1951-05-01), Canazzi et al.
patent: 2967577 (1961-01-01), Tiraspolsky
patent: 3159222 (1964-12-01), Hammer et al.
patent: 3661218 (1972-05-01), Brown
patent: 3912426 (1975-10-01), Tschirky
patent: 3951219 (1976-04-01), Cortes
patent: 4019592 (1977-04-01), Fox
patent: 4059165 (1977-11-01), Clark

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