Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof

A technology of tools and directional devices, applied in drilling equipment and methods, directional drilling, drill pipes, etc., which can solve the problems of continuous coring in directional drilling and deflection process

Active Publication Date: 2013-11-20
POWERCHINA ZHONGNAN ENG +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problem that the existing directional drilling and deflection building tools cannot realize continuous coring and deflection building, the present invention aims to provide a double-pipe outer guide and inner drilling directional continuous coring and deflection building tool and its deflection building method, which can be used When the deflection tool is drilling in the deflection section of directional drilling, the outer tube is used for guiding, and the inner tube is used for coring. The directional and continuous coring and deflection drilling can be realized through the directional deflection of the outer tube, which can better solve the problem of current directional drilling. The technical problem that the drilling deflection process cannot continuously take cores

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
  • Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof
  • Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof
  • Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] A double-pipe outer-guiding inner-drilling directional continuous coring tool, as shown in Figure 1(a) and Figure 1(b), includes an outer pipe 30, which is connected to a guide pipe shoe 32; The inner pipe 29 is sleeved in the pipe 30, and the inner pipe 29 is connected to the hydraulic pressure directional device 40 in the hole, and the lower end of the hydraulic pressure directional device 40 in the hole communicates with the upper end of an elastic joint 50 through an intermediate joint 2; The upper end of the water pressure directional device 40 in the hole is connected with a hollow water connection 1, and the other end of the water connection 1 is connected with a drill pipe; the lower end of the elastic joint 50 is connected with a male joint 36, and the lower end of the male joint 36 is connected with the A core tube 33 is connected, and the lower end of the core tube 33 is connected with a diamond drill bit 35 through a snap spring 34 ; a positioning keyway 31 i...

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 continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and a deflecting method thereof, which belong to the technical field of continuous directional coring and deflecting. During the drilling in a directional drilling and deflecting segment, a drilling tool group special for continuous directional coring, deflecting and drilling is adopted, and the continuous directional coring, deflecting and drilling is performed by an inner tube coring drilling tool through the directional guiding deflection of an outer tube. The invention well solves the technical difficulty that the traditional domestic directional drilling and deflecting technique cannot perform coring, and provides a utility device and a deflecting method thereof for achieving the full-bore coring during the directional drilling in hydropower investigation projects. Meanwhile, the invention provides a reference for the directional drilling requiring continuous coring and deflecting in other industries of China.

Description

technical field [0001] The present invention relates to the field of directional continuous coring and deflection building, in particular to a double-pipe outer guide and inner drilling directional continuous coring deflection tool and its deflection method, which is mainly suitable for directional drilling continuous coring and deflection building in hydropower survey projects . Background technique [0002] Directional drilling technology has been widely used in my country's petroleum, coal, mining, municipal and other industries. Directional drilling is a technology that drills along the design trajectory according to certain purpose requirements. Directional drilling technology originated in the early 20th century. With the application of the three major international drilling technologies (MWD measurement while drilling technology, high-efficiency PDC bit, and long-life steerable screw drilling tool), directional drilling technology has developed rapidly. In my coun...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/06E21B7/08E21B7/28E21B25/16E21B17/00E21B17/046E21B47/02
Inventor 陈安重
Owner POWERCHINA ZHONGNAN ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com