Invention Grant
- Patent Title: Drilling apparatus and method
- Patent Title (中): 钻孔设备及方法
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Application No.: US12264827Application Date: 2008-11-04
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Publication No.: US08322461B2Publication Date: 2012-12-04
- Inventor: Richard T. Hay , Paul Botterell , Terence Schroter , Nathan Strilchuk
- Applicant: Richard T. Hay , Paul Botterell , Terence Schroter , Nathan Strilchuk
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agent Terrence N. Kuharchuk; William E. Shull; Clive D. Menezes
- Priority: CA2642713 20081103
- Main IPC: E21B7/08
- IPC: E21B7/08

Abstract:
A drilling apparatus includes an upper drill string, a lower drill string including a rotary drilling motor, an orientable rotatable connection between the drill strings, a reactive torque control device associated with the orientable rotatable connection, an orientation sensing device for providing a sensed actual orientation of the lower drill string, and a feedback control system configured to actuate the control device in response to the sensed actual orientation to achieve a target orientation of the lower drill string. A drilling method includes actuating the control device to prevent relative rotation of the drill strings, providing a sensed actual orientation of the lower drill string, comparing the sensed actual orientation with a target orientation of the lower drill string, actuating the control device to allow the lower drill string to rotate to provide the target orientation, and actuating the control device to prevent relative rotation of the drill strings.
Public/Granted literature
- US20100108383A1 Drilling Apparatus and Method Public/Granted day:2010-05-06
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