High offset bits with super-abrasive cutters

Details High offset bits with super-abrasive cutters High offset bits with super-abrasive cutters

E - Fixed Constructions

21

B

E21B 10/08 (2006.01) E21B 10/16 (2006.01) E21B 10/52 (2006.01)

Patent

CA 2288923

A roller bit is provided having super-abrasive inserts on cutting portions to assure that the bit will maintain cutting efficiency. In the described exemplary bits, the axes of the roller cones are also offset by a significant or "high offset" amount from the central longitudinal axis of the bit, thereby providing for increased shearing and grinding action by the bit. The use of high offset in combination with super-abrasive inserts provides for optimal bit cutting designs which provide increases in ROP while preserving the bit's ability to hold gage and remain durable to achieve acceptable footage. Minimum high offsets and preferred high offsets are described for various bit sizes, designs and nomenclatures, including milled tooth bits and insert-type bits designed for use in soft-through- medium formation hardnesses as well as formations with greater hardnesses.

Affiliated with

Also associated with

Rating

High offset bits with super-abrasive cutters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High offset bits with super-abrasive cutters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High offset bits with super-abrasive cutters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1562794