Roller Cone Drill Bit With Enhanced Debris Diverter Grooves

a technology of diverter grooves and drill bits, which is applied in earth-moving drilling, cutting machines, construction, etc., can solve the problems of shortening the life of associated roller cone drill bits, affecting the flow of fluids, and affecting the efficiency of drilling, so as to prolong the life of downhole drilling fluid seals, enhance the flow of fluids, and reduce the disadvantages of prior roller cone drill bits.
US20070261891A1Inactive Publication Date: 2007-11-15HALLIBURTON ENERGY SERVICES INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HALLIBURTON ENERGY SERVICES INC
Publication Date
2007-11-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A roller cone drill bit having a bit body with at least one support arm extending from the bit body. Each support arm may have an interior surface and exterior surface with an associated spindle extending from the interior surface. A respective cone assembly may be rotatably disposed on each spindle. A gap formed between interior portions of each cone assembly and exterior portions of the associated spindle with a fluid seal disposed in the gap to block fluid flow therethrough. Each cone assembly includes a generally circular back surface disposed adjacent to the interior surface of the associated support arm. A flow diverter groove formed in the interior surface of each support arm spaced from the associated spindle. Each diverter groove having a variable geometry to enhance the flow of fluid containing downhole debris away from the associated real assembly, and each diverter groove having a variable geometry.
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Description

RELATED APPLICATIONS

[0001] This application claims the benefit of provisional patent application entitled “Roller Cone Drill Bit With Enhanced Debris Diverter Grooves,” Application Ser. No. 60 / 775,648 filed Feb. 21, 2006.TECHNICAL FIELD

[0002] The present disclosure is related to roller cone drill bits used to form wellbores in subterranean formations and more particularly to roller cone drill bits with debris diverter grooves.BACKGROUND OF THE DISCLOSURE

[0003] A wide variety of roller cone and rotary cone drill bits have previously been used to form wellbores or boreholes in subterranean formations. Roller cone drill bits generally include at least one support arm and often three support arms. A respective cone assembly may be rotatably mounted on a spindle or journal extending inwardly from an interior surface each support arm. Small gaps are generally provided between adjacent portions of each support arm and associate cone assembly to allow rotation of the cone assembly relative to ...

Claims

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