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Tubular joints for oil fields with improved compression resistance

A tubular, oilfield technology, applied in the direction of pipe/pipe joint/pipe fitting, threaded connection, passing element, etc., can solve the problem of lack of assembly repeatability, and achieve the effect of increasing the axial pressure bearing area

Inactive Publication Date: 2017-09-26
VAM USA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this thread shape is the lack of assembly repeatability related to its position and effect on metal-to-metal sealing

Method used

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  • Tubular joints for oil fields with improved compression resistance
  • Tubular joints for oil fields with improved compression resistance
  • Tubular joints for oil fields with improved compression resistance

Examples

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Embodiment Construction

[0023] figure 1 An oilfield tubular joint is shown having a helical torque shoulder section between the tapered threads of a two-step threaded joint. A third set of threads located in the middle acts as a helical torque shoulder. Oilfield threaded tubular joint 10 includes a male member 12 having a first external tapered thread 14 and a second external tapered thread 16 axially spaced from the first external tapered thread. The fitting also includes a female member 22 having a first internal tapered thread 24 that cooperates with the first external tapered thread 14 and a second internal tapered thread 26 that cooperates with the second external tapered thread 16 . The joint includes a helical torque shoulder on each of the pin and box members axially spaced from the respective first and second threads. Each helix of the helical torque shoulder comprises a plurality of revolutions with compression flanks on the pin and box members which engage each other when the joint is as...

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PUM

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Abstract

The invention provides an oilfield tubular joint with improved compression performance. A tubular joint body comprises a male component 12 with a first external conical thread 24 and a second external conical thread 26. A female component comprises a first internal conical thread 14 and a second internal conical thread 16. Spiral torque shoulders 40 and 42 are arranged on the male and female components and are axially partitioned between the first and second threads correspondingly. A spiral part of each torque shoulder comprises a plurality of rotators which are provided with compression teeth and which are located on the male and female components.

Description

[0001] This application is an application for an invention patent named "Tubular joint for oil field with improved compression resistance", the international application date is November 4, 2008, the international application number is PCT / US2008 / 012444, and the national application number is 200880111519.X Divisional application. technical field [0002] This invention relates to tubular threaded joints for oilfield applications, and more particularly to high reliability joints having tapered threads and torque shoulders. Tubular threaded joints for oilfields have features that allow for increased compressive performance and allowable torsional loads, and more particularly, tubular joints that limit preload losses. Background technique [0003] A common problem associated with oilfield tubular joints is the effect of pressure on the joint and the resulting loss of preload. Although many joints are capable of withstanding high compressive loads, the benefit of preloading is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L15/06
CPCF16L15/002
Inventor J·布赖汉A·G·贝利M·赫格勒
Owner VAM USA
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