Sliding stabilizer assembly

Details Sliding stabilizer assembly Sliding stabilizer assembly

1977-05-12

1978-08-22

Purser, Ernest R.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 73, 175325, E21B 704

Patent

active

041082567

ABSTRACT:
Apparatus and method for drilling generally horizontal holes through subterranean coal beds for release of methane gas from the coal beds are described. A sliding stabilizer on a drill rod is selectively positioned to provide elevational control to a rotating drill bit. The stabilizer is keyed to a slot in the drill rod, and lateral offsets in the slot are used to retain the stabilizer in the desired position on the drill rod.

REFERENCES:
patent: 1368126 (1921-02-01), Elchinko
patent: 2696367 (1954-12-01), Robishaw
patent: 2766013 (1956-10-01), Hertzke
patent: 3131778 (1964-05-01), Emerson et al.
patent: 3235017 (1966-02-01), Lynes

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