Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1984-08-16
1986-10-28
Levy, Stuart S.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
175340, 175422R, E21B 1018, E21B 1060
Patent
active
046193359
ABSTRACT:
The enhanced flow drill bit includes an upper body section having a bore therein and a lower body section formed integrally with the upper body section and including three passageways to transmit fluid outwardly of the drill bit body. The passageways, when intermittently open, transmit fluid flowing downwardly through the drill bit body and outwardly of the passageways to cause a cross flow in the area of the cone-type cutters. A rotor is mounted within a bore within the upper body section to intermittently open and close passageways to provide for an intensification of flow through the remaining open passageway to create high jet impact force of fluid flowing outwardly of the drill bit body to enhance cross flow and the removal of drill cuttings.
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Hannon Thomas R.
Levy Stuart S.
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