Patent · US Active

Cutting element attached to downhole fixed bladed bit at a positive rake angle

US8567532B2 · kind B2 · utility

16Cited by

364References

20Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

David R. Hall · Provo, US
Ronald B. Crockett · Payson, US
Marcus Skeem · Provo, US
Francis Leany · Salem, US
Casey Webb · Spanish Fork, US

Key dates

Filing date	Nov 16, 2009
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Aug 23, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/5735
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A downhole fixed bladed bit comprises a working surface comprising a plurality of blades converging at a center of the working surface and diverging towards a gauge of the bit, at least on blade comprising a cutting element comprising a superhard material bonded to a cemented metal carbide substrate at a non-planer interface, the cutting element being positioned at a positive rake angle, and the superhard material comprising a substantially conical geometry with an apex comprising a curvature.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.