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Gas tight tubular joint or connection

A connector, tubular technology, applied in the field of single-diameter pipes or casings, which can solve the problem of not being airtight

Inactive Publication Date: 2014-02-05
DEN NORSKE STATS OLJESELSKAP AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is also not airtight

Method used

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  • Gas tight tubular joint or connection
  • Gas tight tubular joint or connection
  • Gas tight tubular joint or connection

Examples

Experimental program
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Embodiment Construction

[0022] The invention is based on the general principle that a tube or sleeve is formed from at least two tubular sections, an outer tubular section and an inner tubular section. The ends of each of said respective segments overlap the next, subsequent tubular segment, whereby one or more of the inner, intermediate or outer tubular segments are of a different metal material and / or or different thicknesses, and during deformation, plasticizes or plastically deforms in the overlap region where a metal seal is formed and thereby provides air pressure integrity between the inside and outside of the expanded tubular tube / sleeve.

[0023] figure 1 An example of a tubular connection according to the invention is shown. more specifically, figure 1 a) shows a perspective view of the tubular body in the form of a sleeve, figure 1 b) shows the along figure 1 a) A cross-sectional view of a portion of the tubular body taken along section line A-A. In order to maintain the gas pressure ...

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PUM

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Abstract

Gas tight tubular joint or connection, particularly related to mono diameter tubular body in the form of a pipe or casing being used in connection with the production of oil and / or gas, where the pipes or casings are manufactured from tubular sections and where the tubular sections, after being interconnected at their respective ends, are finally formed by expansion. The pipes or casings are formed from at least two, one outer and one inner tubular section. The ends of each of said respective section is overlapping the next, succeeding tubular section, whereby one or more of the inner, intermediate or outer tubular sections are of different metallic materials and / or different thickness, and under the deformation process, is plastified or plastically deformed in the overlapping zone forming a metallic seal and thereby providing gas pressure integrity between the inside and outside of the expanded tubular pipe / casing.

Description

technical field [0001] The present invention relates to a gas-tight tubular joint or connection, in particular to a single diameter pipe or casing associated with the production of oil and / or gas, wherein the pipe or casing is made of tubular After the respective ends are interconnected, they are finally formed by expansion. Background technique [0002] Expandable tubular casing has been traditionally used in the oil and gas industry to address operational challenges encountered during drilling and workover. This technology covers many applications such as: [0003] Drilling Liners - Expandable tubes used to isolate drilled sections in wells. The expandable tube is placed into the original casing or liner either before or after radially expanding the tube. This results in minimal or no loss of inner diameter in the wellbore. The expandable drilling liner is designed to withstand the loads that the tubular casing may be subjected to during drilling, ie mechanical loads d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/08E21B43/10F16L13/14
CPCE21B43/103E21B43/106F16L13/007F16L13/168F16L13/14
Inventor S·特维尔里德
Owner DEN NORSKE STATS OLJESELSKAP AS