Drill bit with flow control means

Details Drill bit with flow control means Drill bit with flow control means

1988-10-25

1989-08-15

Massie, Jerome W.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175417, 175424, E21B 1038

Patent

active

048566012

ABSTRACT:
A drill bit has a cylindrical main body, a formation cutting face at the lower end of the body, and means by which the upper end of the bit can be connected into a drill string. A drilling fluid flow passageway extends axially through the main body and provides flow of drilling fluid to the drilling face. The passageway contains flow restrictions for balancing the flow of drilling fluid onto the bit face. The restrictors contain diffusing stages for reducing the velocity of the drilling fluid. Flow isolating paths are formed on the bit face to prevent diversion or channeling of fluid flow on the bit face.

REFERENCES:
patent: 4071097 (1978-01-01), Fulop et al.
patent: 4244521 (1981-01-01), Guse
patent: 4253533 (1981-03-01), Baker, III
patent: 4306627 (1981-12-01), Cheung et al.
patent: 4397363 (1983-08-01), Fuller
patent: 4499958 (1985-02-01), Radtke
patent: 4505342 (1985-03-01), Barr
patent: 4577706 (1986-03-01), Barr
patent: 4596296 (1986-06-01), Matthias
patent: 4603750 (1986-08-01), Sorenson
patent: 4703814 (1987-11-01), Nguyen

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