Invention Grant
- Patent Title: Hybrid drive for a fully rotating downhole tool
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Application No.: US15756481Application Date: 2015-10-12
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Publication No.: US10563461B2Publication Date: 2020-02-18
- Inventor: Ravi P. Nanayakkara
- 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: Baker Botts L.L.P.
- Agent Alan Bryson
- International Application: PCT/US2015/055144 WO 20151012
- International Announcement: WO2017/065738 WO 20170420
- Main IPC: E21B7/06
- IPC: E21B7/06 ; E21B4/02 ; E21B4/04 ; E21B41/00

Abstract:
In accordance with embodiments of the present disclosure, a hybrid drive for use within a rotary steerable drilling tool is provided. The hybrid drive may enable improved directional drilling performance of the rotary steerable drilling tool. The hybrid drive may include a prime mover for rotating a drilling component (e.g., cam used to counter-rotate a steering head) relative to a fully rotating outer housing of the rotary steerable tool. In addition, the hybrid drive may include an electrical motor/generator for adjusting the rotational speed of the cam in response to high frequency changes in rotational speed of the tool housing. The hybrid drive may also include a transmission coupled to the prime mover and the electrical motor/generator for providing mechanical energy from one or both of the prime mover and the motor/generator to rotate the cam (or other drilling component) within the rotary steerable tool.
Public/Granted literature
- US20180252042A1 HYBRID DRIVE FOR A FULLY ROTATING DOWNHOLE TOOL Public/Granted day:2018-09-06
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