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

Grading cement pouring device

A technology of graded cementing device and hole casing, which is applied in the direction of wellbore/well components, earthwork drilling, sealing/isolation, etc., and can solve the problem of complex structure of graded cementing device, difficulty in guaranteeing machining accuracy, long overall length of tools, etc. problem, to achieve the effect of simple structure, permanent guarantee and easy processing

Inactive Publication Date: 2015-02-18
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the staged cementing devices used in well completion construction need to inject plugs twice into the pipe string to hold back the pressure to complete the cementing and cementing operation. The structure of this staged cementing device is complicated, the operation is cumbersome, and the overall length of the tool is too long , the production and processing cost is high, and the processing accuracy is difficult to guarantee

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
  • Grading cement pouring device
  • Grading cement pouring device
  • Grading cement pouring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as figure 1 As shown, the present invention provides a graded cementing device, which includes a main body 1, a closed hole sleeve 2 and a fixed sleeve 3, wherein: the lower end of the main body 1 is connected with a lower joint 4, and the main body 1 is provided with multiple circulation holes 11; the closing hole sleeve 2 is connected in the body 1 through the first shear pin 21, the closing hole sleeve 2 is located above the plurality of circula...

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 provides a grading cement pouring device. The grading cement pouring device comprises a body, a hole closing sleeve and a fixing sleeve, wherein a lower connector is connected to the lower end of the body; a plurality of circulating holes are circumferentially formed in the body; the hole closing sleeve is inserted into the body through a first shearing pin; the hole closing sleeve is positioned above the circulating holes; a hole closing base is inserted into the inner side of the upper end of the hole closing sleeve; the fixing sleeve is inserted into the lower connector; a hole opening sleeve is interlayered between the upper end of the fixing sleeve and the lower end of the hole closing sleeve; the hole opening sleeve is connected to the fixing sleeve through a second shearing pin. The grading cement pouring device can smoothly achieve opening or closing of the holes to ensure smoothness of a well-cementing operation, is simple in structure and easy to manufacture, thereby reducing the manufacturing cost, and is conveniently used on a site.

Description

technical field [0001] The invention relates to a cement injector, in particular to a graded cement injector used in the field of oil and gas exploration and development. Background technique [0002] In the field of oil and gas exploration and development, graded cementing can effectively improve the quality of cementing and reduce the risk of drilling and completion operations. At present, most of the staged cementing devices used in well completion construction need to inject plugs twice into the pipe string to hold back the pressure to complete the cementing and cementing operation. The structure of this staged cementing device is complicated, the operation is cumbersome, and the overall length of the tool is too long , the production and processing cost is high, and the processing accuracy is difficult to guarantee. [0003] Therefore, it is necessary to provide a new graded cementing device to overcome the above-mentioned defects. Contents of the invention [0004]...

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 Applications(China)
IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 王兆会齐奉忠刘硕琼曲从锋
Owner BC P INC CHINA NAT PETROLEUM CORP
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