Invention Grant
US08356679B2 Rotary drill bit with gage pads having improved steerability and reduced wear
有权
带有垫圈的旋转钻头具有改进的可操纵性和减少的磨损
- Patent Title: Rotary drill bit with gage pads having improved steerability and reduced wear
- Patent Title (中): 带有垫圈的旋转钻头具有改进的可操纵性和减少的磨损
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Application No.: US13288649Application Date: 2011-11-03
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Publication No.: US08356679B2Publication Date: 2013-01-22
- Inventor: Shilin Chen , Riun Ashlie
- Applicant: Shilin Chen , Riun Ashlie
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Main IPC: E21B10/42
- IPC: E21B10/42

Abstract:
A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.
Public/Granted literature
- US20120111637A1 ROTARY DRILL BIT WITH GAGE PADS HAVING IMPROVED STEERABILITY AND REDUCED WEAR Public/Granted day:2012-05-10
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