一种狭小空间内弹力自驱动式超短半径多向保压取心工具
By designing a spring-driven, ultra-short radius, multi-directional pressure-holding coring tool, and utilizing a main spring and magnetic valve seat to achieve automatic core sealing, the problem of core performance changes and length control during coring under deep geological conditions was solved, achieving pressure-holding, high-fidelity coring and tool safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN UNIV
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-17
AI Technical Summary
In deep geological environments, existing technologies struggle to achieve pressure-preserving and high-fidelity core sampling in confined spaces and complex geological conditions. This leads to changes in the properties of the core samples during extraction, affecting the accuracy of experimental and analytical results. Furthermore, precise control of the core length is difficult, which can easily result in core fragmentation or tool damage.
A self-driven, elastic, ultra-short radius, multi-directional pressure-holding coring tool for confined spaces was designed. The main spring and magnetic valve seat are used to achieve automatic unlocking and closing of the coring cylinder. The inner cylinder pressure-holding device maintains the in-situ environment of the core, and the locking device and unlocking component ensure the accuracy and safety of the coring process.
It enables pressure-preserving and high-fidelity core sampling in deep rock formations, maintaining the in-situ environmental state of the core and avoiding changes in the core's properties during the extraction process. It is suitable for narrow spaces and multi-directional core sampling needs, improving the reliability and accuracy of the core sampling process and preventing core fragmentation and tool damage.
Smart Images
Figure CN120798219B_ABST