Invention Grant
- Patent Title: Hybrid roller cone and junk mill bit
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Application No.: US15400163Application Date: 2017-01-06
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Publication No.: US10337272B2Publication Date: 2019-07-02
- Inventor: Johnathan Walter Howard , Matthew Charles Stroever , Sterling Robinson
- 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: E21B29/00
- IPC: E21B29/00 ; E21B10/14 ; E21B10/567

Abstract:
A hybrid bit for use in a wellbore includes: a body having a shank for connection to a drilling motor or drill pipe and a plurality of legs attached to the shank; and a plurality of cutting structures. The cutting structures include a roller cone mounted to a first one of the legs and a fixed mill mounted to a second one of the legs and including a pad dressed with a cermet material.
Public/Granted literature
- US20170234092A1 HYBRID ROLLER CONE AND JUNK MILL BIT Public/Granted day:2017-08-17
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