Drilling fluid channel structure of core drilling rig

US11859450B2 · kind B2 · utility

Assignees

• SHENZHEN UNIVERSITY · CN
• Sichuan University · CN

Inventors

• Mingzhong Gao · Longbeilingcun, CN
• Heping Xie · Sichuan, CN
• Ling Chen · Lo Wu, CN
• Jun Guo · Sichuan, CN
• Zhilong Zhang · Chengdu, CN
• Zetian Zhang · Chengdu, CN
• Ru Zhang · Chengdu, CN
• Yiqiang Lu · Sichuan, CN
• Cong Li · Longbeilingcun, CN
• Zhiqiang He · Nanhu, CN

Key dates

• Filing date: Nov 12, 2018
• Grant date: Jan 2, 2024
• Expiry date: Sep 30, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B25/10
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A drilling fluid channel structure of a core drilling rig includes a fluid channel activation module, a pressure relief module, a flow diverging and blocking module, a driving fluid channel and a cooling fluid channel. The fluid channel activation module, the pressure relief module and the flow diverging and blocking module are connected sequentially from the rear to the front. The driving fluid channel and the cooling fluid channel are connected at the rear side thereof to the flow diverging and blocking module. The driving fluid channel includes a driving section located between a stator and a rotor of a driving motor. The driving fluid channel is provided with a driving fluid outlet at the front side of the driving section. The cooling fluid channel passes through a layer disposed between an integrity-preserving compartment and an outer barrel.