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Elastic Centralizer Forming Device

A molding device and centralizer technology, which is applied to drill pipes, casings, drill pipes, etc., can solve the problem of inability to produce elastic centralizer centralizers, and achieve the effects of easy operation, high molding efficiency, and mass production.

Active Publication Date: 2019-04-16
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The expansion operation simply increases the diameter of the pipe and does not produce a drum-shaped expansion, so the existing technology cannot produce this kind of elastic centralizer centralizer

Method used

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  • Elastic Centralizer Forming Device
  • Elastic Centralizer Forming Device
  • Elastic Centralizer Forming Device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing.

[0022] figure 1 and figure 2 The structure of the elastic centralizer forming device 100 according to the present invention is schematically shown. Such as figure 1 and 2 As shown, the elastic centralizer forming device 100 includes a first mandrel 1 , a second mandrel 5 and a forming block 3 movably arranged between the first mandrel 1 and the second mandrel 5 . The forming block 3 is used to carry out the expansion. For this reason, the top surface of the molding block 3 can be configured as an arc surface, so that the rib 21 of the elastic centralizer 20 (such as Figure 5 and 6 shown) have a very smooth shape that contributes to the performance of elastic centralizers.

[0023] The first mandrel 1 and the second mandrel 5 are arranged coaxially and spaced apart, and both can move relative to each other in the axial direction. For example, the first mandrel 1 ca...

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Abstract

The invention relates to a forming device for an elastic centralizer. The forming device comprises a first mandrel, a second mandrel and a forming block. The first mandrel and the second mandrel are coaxial and arranged in a spaced manner. The first mandrel and the second mandrel can move relative to each other in the axial direction. The forming block is movably mounted between the opposite ends of the first mandrel and the second mandrel. When the first mandrel and the second mandrel move towards each other, the forming block protrudes and is higher than the circumferential surface of the first mandrel or the second mandrel. When the first mandrel and the second mandrel move away from each other, the forming block is retracted and is lower than the circumferential surface of the first mandrel or the second mandrel. According to the forming device for the elastic centralizer, the elastic centralizer can be produced conveniently.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a device for manufacturing elastic centralizers. Background technique [0002] Elastic centralizer is a necessary device for oil and gas well cementing operations in petroleum engineering. The shape of the elastic centralizer is generally drum-shaped or olive-shaped, and it is difficult to produce an elastic centralizer with such a shape by using the expansion technology of the prior art. [0003] For example, in the prior art, pipe expansion equipment is used to uniformly expand various pipes and seamless pipes in the radial direction, that is, to use a cone with an outer diameter larger than the inner diameter of the pipe to make the cone pass through the pipe through pushing or pulling. The expansion of the diameter of the pipe is achieved through the expansion of the inner diameter of the pipe by the cone. However, after expanding the tube in this way, the tube remains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C67/00E21B17/10
Inventor 刘明阮臣良郭朝辉李富平刘国祥张辉
Owner CHINA PETROLEUM & CHEM CORP