Invention Grant
- Patent Title: Rotary drill bit steerable system and method
- Patent Title (中): 旋转钻头导向系统及方法
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Application No.: US12525346Application Date: 2008-02-01
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Publication No.: US08172010B2Publication Date: 2012-05-08
- Inventor: Michael J. Strachan
- Applicant: Michael J. Strachan
- 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.
- International Application: PCT/US2008/052798 WO 20080201
- International Announcement: WO2008/097843 WO 20080814
- Main IPC: E21B10/43
- IPC: E21B10/43
Abstract:
A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel section comprising a blade, wherein the heel section is at an end of the drill bit opposite the cutting section, and wherein a diameter of the heel section is a full gage diameter, wherein the blade has a high spiral around the drill bit; and a clearance section between the cutting and heel sections, wherein the clearance section comprises a diameter less than full gage, and wherein clearance section extends from the gage cutters of the cutting section to the blade of the heel section.
Public/Granted literature
- US20090321139A1 Rotary Drill Bit Steerable System and Method Public/Granted day:2009-12-31
Information query
