A fiber composite material core stranded metal wire sucker rod and its preparation method and application

A fiber composite material and metal wire technology, which is applied in drill pipe, earth-moving drilling, drilling equipment and other directions, can solve the problems of poor corrosion resistance and impact resistance of sucker rod, large damage to sucker rod, and influence on use and promotion, etc. Excellent impact resistance, improved service life and improved impact resistance

Active Publication Date: 2020-10-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the inventors have further researched and found that although this type of carbon fiber sucker rod has a relatively good flexibility effect, with the continuous improvement of the reliability of modern oil production and the continuous improvement of energy saving and production increase requirements, the composite material sucker rod with a single structure is also not resistant to corrosion. And the problem of poor impact resistance; and the impact on the well wall during operation is relatively large, and the damage to the sucker rod is relatively large, which affects its use and promotion

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  • A fiber composite material core stranded metal wire sucker rod and its preparation method and application

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preparation example Construction

[0026] As mentioned above, although the carbon fiber sucker rod has better flexibility, the composite sucker rod with a single structure also has the problems of poor corrosion resistance and poor impact resistance; moreover, it has a large impact on the well wall during operation. The damage to the sucker rod is relatively large. Therefore, the invention provides a fiber composite material core stranded metal wire sucker rod and a preparation method thereof.

[0027] In some typical embodiments, in the rigid layer, the fiber filaments are high modulus carbon fibers, or high modulus carbon fibers mixed with glass fibers and / or inorganic ceramic fibers.

[0028] Further, the inorganic ceramic fiber includes: any one of alumina fiber, silicon carbide fiber, boron carbide fiber, basalt fiber, quartz fiber and the like.

[0029] In some typical embodiments, in the rigid layer, the thermosetting resin includes: any one of epoxy resin, phenolic resin, unsaturated polyester resin, u...

Embodiment 1

[0050] refer to figure 1 , an example of a fiber composite material core stranded metal wire sucker rod, its structure includes: a rod body, a wire structure layer and an impact-resistant and anti-corrosion thermoplastic layer; wherein:

[0051] The rod body is divided into a rigid layer 1 and a protective layer 2 wound on the surface of the rigid layer; the rigid layer 1 has a diameter of 7.0mm and is made of T700 carbon fiber filaments compounded with epoxy resin, and the thickness of the protective layer 2 is 0.5 mm. mm, its material is glass fiber reinforced yarn; the resin content in the rod body is 20%.

[0052] The metal wire structure layer 3 is formed by twisting metal wires on the surface of the protective layer, and three layers of circular high-strength stainless steel wires are twisted, wherein the inner layer of metal wires is twisted clockwise, the second outer layer is twisted counterclockwise, and the outermost The layers are twisted clockwise and the wires a...

Embodiment 2

[0062] A fiber composite material core stranded metal wire sucker rod, the same as embodiment 1, the difference is:

[0063] The diameter of the rigid layer 1 is 8mm, which is made of M40 carbon fiber mixed with high-strength basalt fiber and then compounded with epoxy resin. The thickness of the protective layer 2 is 1.5mm, which is formed by mixing glass fibers and basalt fibers; the resin content in the rod body is 21%.

[0064] The metal wire structure layer 3 is formed by twisting metal wires on the surface of the protective layer, and three layers of Z-shaped high-strength aluminum alloy wires are twisted, wherein the metal wires of the inner layer are twisted clockwise, and the second outer layer is twisted counterclockwise. The outer layer is twisted clockwise, and the cross-section of the high-strength aluminum alloy wire is equivalent to a round wire with a diameter of 1.5 mm. The strength of the high-strength aluminum alloy wire is greater than 1000 MPa, the fillin...

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Abstract

The invention relates to the technical field of composite sucker rods, in particular to a fiber composite core stranded metal wire sucker rod and a preparation method and application thereof. The sucker rod structure comprises a rod body, a metal wire structural layer and an impact-resistant anti-corrosion thermoplastic layer, wherein the rod body is divided into a rigid layer and a protective layer wound on the surface of the rigid layer; the rigid layer is formed by composite thermosetting resin of fiber filaments, and the protective layer is made of high-strength fibers; the metal wire structural layer is formed by stranding metal wire on the surface of the protective layer; and the impact-resistant anti-corrosion thermoplastic layer is coated on the surface of the metal wire structurelayer. The sucker rod has good impact resistance and bending performance, one or more layers of high-strength metal wires are stranded outside, the sucker rod is endowed with excellent impact resistance, meanwhile, the weight of the sucker rod is increased to a certain extent, the sucker rod can be guaranteed to be in a stretched state all the time in the running process, the operation can be completed without using a counterweight rod, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of composite sucker rods, in particular to a fiber composite core stranded metal wire sucker rod and its preparation method and application. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] With the development of my country's oil recovery technology, under the background of deteriorating oil production environment, the field of oil production puts forward higher requirements on the efficiency of oil production and the effective utilization of abandoned oil wells. Traditional steel sucker rods are gradually being replaced by composite material sucker rods. . At present, the composite sucker r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00E21B17/10B29C48/154B29C48/92
CPCB29C48/154B29C48/92B29C2948/926B29C2948/92704E21B17/00E21B17/1071E21B17/1085
Inventor 朱波王永伟乔琨高学平赵圣尧刘玉兰张敏刘兵刘洪广
Owner SHANDONG UNIV
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