Invention Grant
- Patent Title: Downhole drill bit
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Application No.: US14717567Application Date: 2015-05-20
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Publication No.: US09708856B2Publication Date: 2017-07-18
- Inventor: David R. Hall , John D. Bailey , Ronald B. Crockett
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Houston
- Assignee: SMITH INTERNATIONAL, INC.
- Current Assignee: SMITH INTERNATIONAL, INC.
- Current Assignee Address: US TX Houston
- Main IPC: E21B10/43
- IPC: E21B10/43 ; E21B10/55 ; E21B10/573 ; E21B10/567 ; E21B10/42 ; E21B10/54

Abstract:
A downhole cutting tool may include a tool body; a plurality of blades extending from the tool body; a first blade comprising at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate; a second blade comprising at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate; wherein, when the first blade and the second blade are superimposed on each other, a central axis of the at least one pointed cutting element is offset from a central axis of the at least one shear cutting element.
Public/Granted literature
- US20150252624A1 Downhole Drill Bit Public/Granted day:2015-09-10
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