Anti-rotating device of non-rotating sleeve and a rotary guiding device

US10815730B2 · kind B2 · utility

Assignee

• Institute of Geology and Geophysics, Chinese Academy of Sciences · CN

Inventors

• Qingbo Liu · Beijing, CN
• Qingyun Di · Beijing, CN
• Tsili Wang · Katy, US
• Wenxuan Chen · Beijing, CN
• Jiansheng Du · Beijing, CN
• Yongyou Yang · Beijing, CN
• Xinzhen He · Beijing, CN
• Linfeng Hong · Beijing, CN
• Qijun Xie · Beijing, CN

Key dates

• Filing date: Mar 2, 2018
• Grant date: Oct 27, 2020
• Expiry date: Mar 2, 2038

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B17/1078
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The invention discloses an anti-rotating device of non-rotating sleeve. The anti-rotating device is connected with the non-rotating sleeve in such way so that the anti-rotating device can transmit circumferential acting force to the non-rotating sleeve, thus the non-rotating sleeve are prevented from rotating, the anti-rotating device comprises an anti-rotating member and a resilient member, the anti-rotating member can move in a generally radial direction of the non-rotating sleeve, and the resilient member acts on the anti-rotating member and provides acting force being substantially radially outward for the anti-rotating member. According to the anti-rotating device of the non-rotating sleeve and a rotary guiding device, on the one hand, bases can be provided for accurate attitude measurement and guiding control, on the other hand, excessively rapid rotation of the two non-rotating sleeve can be prevented only by using one anti-rotating device, and meanwhile the anti-rotating device can further provide guiding driving force based on the minimum structure size.