Invention Grant
- Patent Title: Directional drilling methods and systems employing multiple feedback loops
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Application No.: US15329537Application Date: 2014-09-16
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Publication No.: US09790780B2Publication Date: 2017-10-17
- Inventor: Jason D. Dykstra , Yuzhen Xue , Fanping Bu
- Applicant: HALLIBURTON ENERGY SERVICES, INC.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Tumey L.L.P.
- Agent John W. Wustenberg
- International Application: PCT/US2014/055945 WO 20140916
- International Announcement: WO2016/043724 WO 20160324
- Main IPC: E21B44/00
- IPC: E21B44/00 ; E21B7/06 ; E21B47/007 ; E21B47/09 ; E21B47/00 ; E21B47/024

Abstract:
A directional drilling system includes a bottomhole assembly having a drill bit and a steering tool configured to adjust a drilling direction in real-time. The system also includes a first feedback loop that provides a first steering control signal to the steering tool, and a second feedback loop that provides a second steering control signal to the steering tool. The system also includes a set of sensors to measure at least one of strain and movement at one or more points along the bottom-hole assembly during drilling, wherein the first and second steering control signals are based in part on the strain or movement measurements.
Public/Granted literature
- US20170218744A1 DIRECTIONAL DRILLING METHODS AND SYSTEMS EMPLOYING MULTIPLE FEEDBACK LOOPS Public/Granted day:2017-08-03
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