Invention Grant
- Patent Title: Offset rock bit with pull back adapter
- Patent Title (中): 偏移岩石钻头与拉回适配器
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Application No.: US13402651Application Date: 2012-02-22
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Publication No.: US08544569B2Publication Date: 2013-10-01
- Inventor: Ronald F. Wright , David G. Bullock
- Applicant: Ronald F. Wright , David G. Bullock
- Applicant Address: US OK Perry
- Assignee: Radius HDD Direct, LLC
- Current Assignee: Radius HDD Direct, LLC
- Current Assignee Address: US OK Perry
- Agency: Tomlinson Rust McKinstry Grable
- Main IPC: E21B10/62
- IPC: E21B10/62

Abstract:
An offset rock bit (12) has a steering face (28) and a shoe (30) provided by a recess formed into the steering face (28). A slot (66) formed into the shoe (30) for receiving a pull back adapter (50) in a centrally located position in the forward end of the offset rock bit (12). The pull back 5 adapter (50) has a pull back eye (52) with a central axis (62) which is aligned with a centrally disposed longitudinal axis (20) of the offset rock bit (12) and the tool string (10). This aligns the pull back eye (52) of the pull back adapter (50) with a borehole formed using the offset rock bit (12). The pull back adapter (50) also includes side edges (54, 56) which are configured for centering the pull back adapter (50) and pull back conduit within the borehole.
Public/Granted literature
- US20120152621A1 Offset Rock Bit With Pull Back Adapter Public/Granted day:2012-06-21
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