Title:
QUALITY GUARANTEED DEEP ROCK CORING DEVICE AND CORING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/113515
Kind Code:
A1
Abstract:
Disclosed are a quality guaranteed deep rock coring device and a coring method therefor, applicable to the technical field of scientific drilling. The quality guaranteed deep rock coring device comprises a drilling tool (1), a drill (2), a center pole (3) and a core storage body (4); the drill (2) being mounted at the lower end of the drilling tool (1), the lower end of the center pole (3) being connected with the core storage body (4), and the center pole (3) being able to drive the core storage body (4) to move along the axial direction of the drilling tool (1). A liquid storage cavity (30) with an opening at the lower end is provided in the center pole (3), a core storage cavity (40) with an opening at the lower end is provided in the core storage body (4), a first valve (6) for controlling the intercommunication or cut-off between the liquid storage cavity (30) and the core storage cavity (40) is mounted at the upper end of the core storage body (4), and a second valve (7) for closing or opening the lower end opening of the core storage cavity (40) is mounted on the inner wall of the drilling tool (1). The method can prevent the living environment of microorganism on the rock core from changing when the core is taken out, and can prevent the petroleum-gas resource inside the rock core from losing and resulting in resource assessment distortion, thereby achieving the objective of quality guaranteed coring and guaranteeing the quality status of the rock core in situ.
Inventors:
XIE HEPING (CN)
LIU TAO (CN)
CHEN LING (CN)
GAO MINGZHONG (CN)
ZHANG RU (CN)
WU YIFAN (CN)
HE ZHIQIANG (CN)
LIU TAO (CN)
CHEN LING (CN)
GAO MINGZHONG (CN)
ZHANG RU (CN)
WU YIFAN (CN)
HE ZHIQIANG (CN)
Application Number:
PCT/CN2018/119535
Publication Date:
June 11, 2020
Filing Date:
December 06, 2018
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
UNIV SICHUAN (CN)
UNIV SICHUAN (CN)
International Classes:
E21B25/00
Foreign References:
| CN109403900A | 2019-03-01 | |||
| CN106124242A | 2016-11-16 | |||
| CN204646156U | 2015-09-16 | |||
| CN2402798Y | 2000-10-25 | |||
| CN107816328A | 2018-03-20 | |||
| US20150176355A1 | 2015-06-25 |
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
Download PDF: