Multi-point oriented coring system and method for drill core

A core and multi-point technology is applied in the field of multi-point core directional coring devices, which can solve the problems of undetermined occurrence of broken cores into multiple segments, unrecoverable occurrence profiles, and difficulty in popularization and application.

Inactive Publication Date: 2009-09-16
BEIJING LIUHE GREATNESS TECH
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wireline coring method is widely used in China. After the obtained core reaches the ground, the occurrence profile cannot be restored, and the direction of the stratum cannot be judged. It is still necessary to drill the core again, which increases the difficulty ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-point oriented coring system and method for drill core
  • Multi-point oriented coring system and method for drill core
  • Multi-point oriented coring system and method for drill core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0020] First, refer to figure 1 It is a structural schematic diagram of the downhole orientation instrument in Example 1 of the present invention. The downhole orientation instrument is composed of a core scratcher 2 and a probe orientation unit 3. Before use, the probe only needs to be fixed on the core tube (or inner tube) At the extraction end, the core scraper is fixed at the end of the inner tube close to the drill bit 1, and the core can be started.

[0021] refer to figure 2 It is a schematic diagram of the process of Embodiment 2 of the present invention. After a tube of core is taken, the drilling tool remains still for more than one minute, and the time when standing still is recorded.

[0022] refe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a multi-point oriented coring system and a method for drill core. The system includes: a rope coring part, an underground orientation device, a searching tube orientation unit, a PC machine and a software kit, a printer, a ground winch and a deep measurement system. The invention also discloses a multi-point oriented coring method for drill core which includes steps as follows: confirming the drill core position and a corresponding relationship relative to magnetic north orientation in a same time according with a real-time clock of a drill core orientation instrument and a real-time clock of the underground deep device, accordingly, calculating the inner drill core orientation of the whole coring pipe correctly.

Description

technical field [0001] The invention relates to the field of oil drilling, in particular to a system and method for a multi-point rock core directional coring device. Background technique [0002] Core directional coring technology is a technology to determine the original occurrence of rock cores in the formation. Geological surveys at home and abroad have always attached great importance to the research of directional coring and regarded it as one of the key exploration technologies. It can not only quickly and conveniently determine the occurrence of underground rock and soil layers and structural surfaces, but also determine the migration direction of sediments and harmful chemicals, the orientation of radioactive sources, understand various physical characteristics of underground rocks, and in-situ stress. field, and the tendency to predict borehole bending. In the field of geological disasters, directional coring parameters are often used to determine the occurrence o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B25/16E21B25/02E21B47/02
Inventor 冯建宇
Owner BEIJING LIUHE GREATNESS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap