发明公开
- 专利标题: SYSTEM AND METHOD FOR POSITION AND ORIENTATION DETECTION OF A DOWNHOLE DEVICE
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申请号: US18566815申请日: 2022-05-31
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公开(公告)号: US20240271522A1公开(公告)日: 2024-08-15
- 发明人: Eirik BORG , Bjørn CHRISTIANSEN , Tobias RASMUSSEN
- 申请人: Aziwell AS
- 申请人地址: NO Trondheim
- 专利权人: Aziwell AS
- 当前专利权人: Aziwell AS
- 当前专利权人地址: NO Trondheim
- 优先权: NO 210892 2021.07.09
- 国际申请: PCT/EP2022/064829 2022.05.31
- 进入国家日期: 2023-12-04
- 主分类号: E21B47/024
- IPC分类号: E21B47/024 ; E21B7/06 ; E21B44/00
摘要:
The present invention relates to a system for identifying or monitoring the orientation and position of a rotary steerable drill for drilling in bedrock, wherein the system comprising; •a substantially non-rotating outer body element (1) housing at least one reference point magnet (14), and •a rotating drive shaft (3), arranged inside the outer body element (1), that is connected to a drill bit (4) at its first end and to the drill rod (5), and •an inner body element (11) that is arranged inside the drive shaft (3), drill rod (5) or coupling thereof and where the inner body element (11) can be seated and retrieved from surface by means of a wireline. The inner body includes: —a cradle or platform (23) is arranged essentially concentrically inside the inner body element (11) being suspended rotationally free to the inner body element (11) enabling the cradle or platform (23) to freely rotate relative to the inner body element (11). The cradle or platform also includes at least one gravity sensor for at any time measuring the direction of earth's gravity relative to the said cradle or platform (23), and at least one alignment device (19) configured to align said cradle or platform (23) in a known rotational position relative to a reference constituted by the reference point element (14) or the direction of earth's gravity.
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