Interchangeable bearing blocks for drill bits, and drill...

Details Interchangeable bearing blocks for drill bits, and drill... Interchangeable bearing blocks for drill bits, and drill...

2007-06-14

2010-10-19

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

Bit or bit element

With bit guide or bore wall compacting device

C175S426000, C175S430000, C175S432000

Reexamination Certificate

active

07814997

ABSTRACT:
A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.

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