Earth boring apparatus and method offering improved gage...

Details Earth boring apparatus and method offering improved gage... Earth boring apparatus and method offering improved gage...

2005-04-26

2005-04-26

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

With bit guide or bore wall compacting device

C175S057000, C175S415000, C175S426000

Reexamination Certificate

active

06883623

ABSTRACT:
A rotary drill bit for drilling subterranean formations configured with at least one protective structure proximate to the rotationally leading and trailing edges of a gage trimmer, wherein the at least one protective structure is positioned at substantially the same exposure as its associated gage trimmer. Particularly, the apparatus of the present invention may provide protection for gage trimmers during drilling, tripping, and/or rotation within a casing; i.e., when changing a drilling fluid. Protective structures may be configured and located according to anticipated drilling conditions including helix angles. In addition, a protective structure may be proximate to more than one gage trimmer while having a substantially equal exposure to each associated gage trimmer. Methods of use and a method of rotary bit design are also disclosed.

REFERENCES:
patent: 3724564 (1973-04-01), Messenger
patent: 4940099 (1990-07-01), Deane et al.
patent: 4991670 (1991-02-01), Fuller et al.
patent: 5467836 (1995-11-01), Grimes et al.
patent: 5979576 (1999-11-01), Hansen et al.
patent: 6102140 (2000-08-01), Boyce et al.
patent: 6337308 (2002-01-01), Adams et al.
patent: 6349780 (2002-02-01), Beuershausen
patent: 6397958 (2002-06-01), Charles et al.
patent: 2355035 (2001-04-01), None
patent: 2 365 893 (2002-02-01), None
patent: 2 369 140 (2002-05-01), None
UK Search Report dated Nov. 20, 2003 (3 pages).
http://www.bakerhughes.com/hcc/features/tricone.htm, Jun. 12, 2002, Advertisement: “Optional Features—Diamond Bits,” Hughes Christensen, 4 pages.

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