Expansion hanger

A hanger and expansion technology, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc. It can solve the problems of easy failure of hanger seal and small inner diameter of liner, so as to avoid the risk of puncture leakage , reasonable structure and high reliability

Active Publication Date: 2013-03-20
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an expandable hanger, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problems that the seal of the conventional hanger is easy to fail and the inner diameter of the tail pipe is small, which brings trouble to the operation

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
  • Expansion hanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0019] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of Figure 1 of the specification, such as: the positional relationship of front, rear, top, bottom, left, right, etc. It is determined according to the layout direction of the drawings in the description.

[0020] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0021] As shown in Figures 1 and 2, the expansion hanger includes an expansion tube, a conversion cylinder 5, a single flow valve seat 7, a guide shoe 8, an expansion device, and a salvageable and setting device; There is an expansion device, and the expansion tube incl...

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 relates to the technical field of hanging and expanding devices for cementing of wells in oil drilling, in particular to an expansion hanger. The expansion hanger comprises an expansion pipe, a switching barrel, a single-current valve seat, a guide shoe, an expansion device, a salvageable setting device and a single-current control device, wherein the expansion device is arranged in the expansion pipe; the expansion pipe comprises a diameter expansion pipe, a frustum-shaped oblique pipe neck and a body of which the outer diameters increase in sequence from top to bottom; a vulcanized rubber ring is fixed on the upper outer wall of the diameter expansion pipe, or at least two circles of vulcanized rubber rings are fixed on the upper outer wall of the diameter expansion pipe from top to bottom; the lower end of the body is fixedly arranged together with the upper end of the switching barrel; the inner diameter of the switching barrel is the same as the inner diameter of the body; and the salvageable setting device is arranged in an inner cavity between the lower part of the body and the switching barrel. Under the condition that the drift diameter loss of a shaft of an oil-gas well, hanging and sealing are realized through expansion and cold drawing deformation of tubular products, high reliability is achieved, sealing does not fail easily, and hanging and well cementing operation of a tail pipe is completed safely and rapidly.

Description

technical field [0001] The invention relates to the technical field of a suspension expansion device for well cementing in petroleum drilling, and relates to an expansion type hanger. Background technique [0002] In the completion string structure of oil wells such as horizontal wells, directional wells, and sidetracked horizontal wells, the hanger is the most important link. The conventional hanger is mechanically suspended, squeezed and sealed, and the suspension and seal are prone to failure. The exploitation of oilfields brings troubles; and the diameter of conventional hangers is small, especially after sidetracking wells use conventional hangers, which limits the later development measures of oil wells; in order to effectively repair casing damage wells or complex accidents that cannot be handled by fishing and milling processes Wells are usually sidetracked through windows, and cemented and completed with a small-sized liner; The matching of injection-production too...

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): E21B23/01E21B33/12
Inventor 杨磊张丽萍荆江录盛志民宋道海张伟
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