Coring device

US12235194B2 · kind B2 · utility

Assignees

• CHINA OILFIELD SERVICES LIMITED · CN
• CHINA NATIONAL OFFSHORE OIL CORPORATION · CN

Inventors

• Zhibin Tian · Langfang, CN
• Tao-Cheng Lu · Kaohsiung, TW
• Lin Huang · Beijing, CN
• Zanqing Wei · Laishui, CN
• Tiemin Liu · Laishui, CN
• Yongren Feng · Laishui, CN
• Xiaodong Chu · Langfang, CN
• Yong Jiang · Hangzhou City, CN

Key dates

• Filing date: Apr 7, 2021
• Grant date: Feb 25, 2025
• Expiry date: Feb 19, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N1/08
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A coring device, comprising an electronic sub communicated with a ground control system and identifying the position of a core taken underground, a supporting arm sub for fixing the coring device, a rotating sub for rotating a mechanical sub to a specified position to carry out coring by rotating, a hydraulically controlled sub for providing power to the rotating sub and the mechanical sub, a mechanical sub for performing pushing, coring, core folding and core length measurement operations, and a core storage barrel sub for storing a taken core, which are sequentially connected. The rotating sub comprises a rotating shaft, a moving sleeve which sleeves the rotating shaft and is in threaded connection with the rotating shaft, and a fixed housing; the rotating shaft and the moving sleeve are arranged inside the fixed housing, two ends of the rotating shaft respectively extend from two ends of the fixed housing.