Invention Grant
- Patent Title: Sidewall coring structure directly driven by an electric motor
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Application No.: US15193425Application Date: 2016-06-27
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Publication No.: US10381899B2Publication Date: 2019-08-13
- Inventor: Yongren Feng , Jibin Zou , Jian Li
- Applicant: China National Offshore Oil Corporation , China Oilfield Services Limited
- Applicant Address: CN Beijing CN Sanhe, Hebei
- Assignee: CHINA NATIONAL OFFSHORE OIL CORPORATION,CHINA OILFIELD SERVICES LIMITED
- Current Assignee: CHINA NATIONAL OFFSHORE OIL CORPORATION,CHINA OILFIELD SERVICES LIMITED
- Current Assignee Address: CN Beijing CN Sanhe, Hebei
- Agency: Brooks Kushman P.C.
- Priority: CN201610041543 20160121
- Main IPC: E21B7/04
- IPC: E21B7/04 ; E21B49/06 ; H02K7/116

Abstract:
The present application provides a sidewall coring structure directly driven by an electric motor comprising a drill bit, an electric motor and a speed reducer, the electric motor and the speed reducer are an integrated structure and the drill bit is directly connected to an output of the speed reducer. The coring structure directly drives the drill bit through an integrated structure of the speed reducer and the electric motor; its transmission efficiency is greatly improved, meanwhile the coring structure is more simplified, with improved reliability, easier maintenance and reduced maintenance cost.
Public/Granted literature
- US20170214291A1 Sidewall Coring Structure Directly Driven by an Electric Motor Public/Granted day:2017-07-27
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