Drill bit with suction and method of dry drilling with liquid co

Details Drill bit with suction and method of dry drilling with liquid co Drill bit with suction and method of dry drilling with liquid co

1976-03-11

1977-05-10

Purser, Ernest R.

Boring or penetrating the earth

Processes

Boring with specific fluid

175213, 175340, E21B 910

Patent

active

040222853

ABSTRACT:
A drill bit for drilling deep wells such as oil wells has a cone at the bottom and a fluid bore at the top. The fluid is directed by nozzles upward through a passageway so that the cone is maintained free of fluid and the cuttings from the cone are picked up by suction and carried through the discharge passageway. The jet from the discharge passageway supports the column of fluid surrounding the drill stem.

REFERENCES:
patent: 1816481 (1931-07-01), Hansen
patent: 2085941 (1937-07-01), Arnold
patent: 2201570 (1940-05-01), Zublin
patent: 2545195 (1951-03-01), Crake
patent: 2849214 (1958-08-01), Hall
patent: 3111179 (1963-11-01), Albers et al.
patent: 3923109 (1975-12-01), Williams
patent: 3958651 (1976-05-01), Young

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