Invention Grant
- Patent Title: Method and device for determining a drill bit's position in a borehole
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Application No.: US14127446Application Date: 2012-06-27
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Publication No.: US09605532B2Publication Date: 2017-03-28
- Inventor: Eric Cayeux
- Applicant: Eric Cayeux
- Applicant Address: NO Stavanger
- Assignee: International Research Institute of Stavanger AS
- Current Assignee: International Research Institute of Stavanger AS
- Current Assignee Address: NO Stavanger
- Agency: Andrus Intellectual Property Law, LLP
- Priority: NO20110932 20110628
- International Application: PCT/NO2012/050121 WO 20120627
- International Announcement: WO2013/002645 WO 20130103
- Main IPC: E21B47/09
- IPC: E21B47/09 ; E21B47/14 ; E21B47/04
Abstract:
A method is for determining the position of a lower portion of a drill string in a bore hole. The drill string comprises a number of drill string components, each drill string component being interconnected by means of at least one joint. Several ultrasonic sensors are arranged after each other along a drill string. The method comprises localizing the position of the chamfer of the joint relative to the ultrasonic sensors.
Public/Granted literature
- US20140174826A1 Method and Device for Determining a Drill Bit's Position in a Borehole Public/Granted day:2014-06-26
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