Invention Grant
- Patent Title: Earth-boring tools attachable to a casing string and methods for their manufacture
- Patent Title (中): 钻孔工具可连接到套管柱上，并可用于制造
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Application No.: US12270944Application Date: 2008-11-14
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Publication No.: US09085939B2Publication Date: 2015-07-21
- Inventor: Eric E. McClain , Matthew R. Isbell , Jack Thomas Oldham , John C. Thomas , Marc W. Bird
- Applicant: Eric E. McClain , Matthew R. Isbell , Jack Thomas Oldham , John C. Thomas , Marc W. Bird
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agent Steve Rosenblatt
- Main IPC: E21B10/42
- IPC: E21B10/42 ; E21B7/20 ; E21B10/64
Abstract:
Casing bits include a bit crown having a substantially hollow interior. The bit crown has blades over a face portion thereof, the blades including a plurality of cutting elements attached thereto. The bit crown further includes a composite inlay positioned at least within the substantially hollow interior. The casing bits also include case hardened outer surfaces radially outside a drill-out region. The casing bits further include short-substrate cutting elements. Methods of forming a casing bit are also disclosed.
Public/Granted literature
- US20090120693A1 EARTH-BORING TOOLS ATTACHABLE TO A CASING STRING AND METHODS FOR THEIR MANUFACTURE Public/Granted day:2009-05-14
Information query
