Earth boring apparatus and method offering improved gage...

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Earth boring apparatus and method offering improved gage... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earth boring apparatus and method offering improved gage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth boring apparatus and method offering improved gage... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3425881

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.