Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1993-08-24
1995-03-07
Neuder, William P.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
175403, E21B 918
Patent
active
053949528
ABSTRACT:
A roller cone drill bit is disclosed that leaves uncut a substantial formation core having a diameter from 10% to 25% of the bit gage diameter. The bit is designed to have normal size bearings, cone shell thickness and cutter protrusion to allow the use of standard drilling weights and RPM, thereby achieving a significant increase in drilling rate. When drilling abrasive formations, ultra hard cutting teeth are used in the cone apex to maintain the core diameter.
REFERENCES:
patent: 2901223 (1959-08-01), Scott
patent: 3134447 (1964-05-01), McElya et al.
Johns Roger P.
Muren Charles R.
Portwood Gary
Tyner Gilbert S.
Neuder William P.
Smith International Inc.
Upton Robert G.
LandOfFree
Core cutting rock bit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Core cutting rock bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core cutting rock bit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1400920