Drilling systems including fiber-containing...

Details Drilling systems including fiber-containing... Drilling systems including fiber-containing...

2011-07-12

2011-07-12

Neuder, William P (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S332000

Reexamination Certificate

active

07975785

ABSTRACT:
Diamond-impregnated cutting tools including fibers and drilling systems incorporating such tools are described. The cutting tools contain a diamond-impregnated cutting portion that contains fibers made from carbon, glass, ceramic, polymer, and the like. The fibers may be used to both control the tensile strength and the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may also weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. As the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion. Using the fibers allows the cutting tools to last longer and make them safer and more economical because they need to be replaced less often.

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