Drilling-plug-free cementing device for full hole completion

A cementing device and through-hole completion technology, which is applied to wellbore/well parts, earthwork drilling, sealing/isolation, etc., can solve the problems of inconvenience and increase of completion cost, and achieve reduction of well completion cost and production The effect of low manufacturing cost and easy processing

Inactive Publication Date: 2015-09-09
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF14 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings inconvenience to the field implementation and increases the completion cost

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
  • Drilling-plug-free cementing device for full hole completion
  • Drilling-plug-free cementing device for full hole completion
  • Drilling-plug-free cementing device for full hole completion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] 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.

[0028] Such as figure 1 As shown, the present invention provides a plug-free cementing device for through-hole well completion, which includes a main body 1, a closed hole sleeve 2, a rubber plug sleeve 3 and an open hole sleeve 4, wherein: the lower end of the main body 1 is connected with a lower joint 5. The body 1 is provided with a plurality of circulation holes 11 in the circumferential direction; the closing hole sleeve 2 is penetrated in the body 1 and...

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 drilling-plug-free cementing device for full hole completion. The device comprises a body, a closing hole sleeve, a rubber plug sleeve and an opening hole sleeve. The lower end of the body is connected with a lower joint, and a plurality of circulation holes are formed in the body circumferentially. The closing hole sleeve is arranged in the body in a penetrating mode and disposed above the circulation holes. The rubber sleeve plug penetrates the closing hole sleeve and a lower joint, the upper end of the rubber sleeve plug is connected with the closing hole sleeve through a first cutting pin, the lower end is connected with the lower joint through a second cutting pin, a plurality of through holes are formed in the closing plug sleeve circumferentially and are aligned and communicated with the circulation holes. The opening hole sleeve is arranged in the closing plug sleeve in a penetrating mode and is connected with the rubber plug sleeve above the plurality of the through holes through a third cutting pin. By means of the device, the structure is simple and reasonable, the device is safe and reliable, the machining cost is low, drill plugs or fishing tools are not needed to be dropped after well cementation, the well drilling completion process is simplified, and the well drilling completion cost is saved.

Description

technical field [0001] The invention relates to a cementing device, in particular to a plug-free cementing device for through-hole completion used in the field of oil and gas exploration and development. Background technique [0002] Through-hole well completion is more and more widely used because of its low cost, low pollution and high production. [0003] At present, in the later stage of perforated well completion, it is necessary to run small drilling tools to drill through accessories such as grading hoops and blind plates, or to run supporting fishing tools after the completion of well cementing to fish out the mechanisms that need to be drilled out. This brings inconvenience to on-site implementation and increases the cost of well completion. Contents of the invention [0004] The object of the present invention is to provide a plug-free cementing device for through-hole well completion, which has a simple and reasonable structure, is safe and reliable, and has lo...

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): E21B33/138
Inventor 王兆会刘斌辉刘硕琼齐奉忠
Owner BC P INC CHINA NAT PETROLEUM CORP
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