Invention Grant
- Patent Title: Roller cone drill bit with improved erosion resistance
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Application No.: US15151552Application Date: 2016-05-11
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Publication No.: US09988854B2Publication Date: 2018-06-05
- Inventor: Thomas Gallifet , Matthew Charles Stroever
- Applicant: Varel International Ind., L.P.
- Applicant Address: US TX Carrollton
- Assignee: VAREL INTERNATIONAL IND., L.P.
- Current Assignee: VAREL INTERNATIONAL IND., L.P.
- Current Assignee Address: US TX Carrollton
- Main IPC: E21B10/52
- IPC: E21B10/52 ; B23K31/02 ; C23C8/04 ; C23C8/20 ; C23C8/64 ; C23C8/80 ; E21B10/20 ; C23C8/22
Abstract:
A method of manufacturing a roller cone for a drill bit includes: selectively carburizing a land of the roller cone between a plurality of spots on the land for protection against erosion; after carburization, forming sockets in the roller cone at the spots; and mounting cermet inserts in the sockets.
Public/Granted literature
- US20170328135A1 ROLLER CONE DRILL BIT WITH IMPROVED EROSION RESISTANCE Public/Granted day:2017-11-16
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