System for in-situ retained coring of rock sample

US11840890B2 · kind B2 · utility

Assignee

• SHENZHEN UNIVERSITY · CN

Inventors

• Heping Xie · Sichuan, CN
• Mingzhong Gao · Longbeilingcun, CN
• Ling Chen · Lo Wu, CN
• Cunbao Li · Longbeilingcun, CN
• Jianbo Zhu · Longbeilingcun, CN
• Zhiyi Liao · Longbeilingcun, CN
• Cong Li · Longbeilingcun, CN
• Jun Guo · Sichuan, CN
• Zhiqiang He · Nanhu, CN

Key dates

• Filing date: Mar 15, 2019
• Grant date: Dec 12, 2023
• Expiry date: Oct 29, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B2200/05
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A system for the in-situ retained coring of a rock sample has a driving module (300), a retaining module (200), and a coring module (100) which are connected in sequence. The coring module (100) includes a rock core drilling tool and a rock core sample storage cylinder, the retaining module (200) includes a rock core sample retaining compartment. The driving module includes a coring drill machine that has a drill machine outer cylinder unlocking mechanism. The rock core drilling tool includes a coring drill tool, a core catcher (11), and an inner core pipe (12). The coring drill tool has an outer core pipe (13) and a hollow drill bit (14). The rock core sample retaining compartment has an inner coring cylinder (28), an outer coring cylinder (26), and an energy accumulator (229).