Bits and cutting structures

Details Bits and cutting structures Bits and cutting structures

2004-10-18

2008-09-23

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S434000

Reexamination Certificate

active

07426969

ABSTRACT:
This invention provides an improved cutting element for downhole cutting tools comprising a support element and a shearing element disposed on said support; a drill bit insert comprising a body and said cutting element disposed on said body; and a cutting tool, such as a hole opener or a reamer, comprising said cutting element and/or said drill bit insert. Also provided are methods for forming the said cutting element, drill bit insert and downhole cutting tools and a method for drilling mixed earth formation using the improved downhole cutting tools of the present invention.

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