Carbon fiber continuous sucker rod provided with continuous flocculent wear-resistant layer internally

Abstract

The invention belongs to the field of oil production equipment, in particular to a carbon fiber continuous sucker rod with a built-in continuous flocculent wear-resistant layer, comprising a carbon fiber core body, a wear-resistant layer and an epoxy resin layer. A wear-resistant layer is arranged on the outer side of the coarse sand layer, a spun yarn layer is arranged on the outer side of the wear-resistant layer, and the epoxy resin layer is arranged on the outer side of the spun yarn layer; the roving layer is made of aramid fiber with a fineness of 3000D , the wear-resistant layer is covered by cotton wool-like polypropylene strips, and the spun yarn layer is made of aramid fibers with a fineness of 1100; the length directions of the carbon fibers, aramid fibers and polypropylene strips are all Consistent with the axis of the sucker rod. The polypropylene used in the present invention has a cotton flock-like structure, and the epoxy resin can be more fully immersed between each fiber monofilament in the polypropylene strip, so the degree of bonding between the wear-resistant material and the epoxy resin and the degree of immersion of the epoxy resin are greatly improved. Improve, so that the wear resistance of wear-resistant materials can be fully exerted.

Description

technical field [0001] The invention belongs to the field of oil production equipment, in particular to a carbon fiber continuous sucker rod with a built-in continuous flocculent wear-resistant layer. Background technique [0002] Carbon fiber continuous sucker rod is a new type of sucker rod used in pumping units in recent years. Compared with traditional steel sucker rods, carbon fiber sucker rods have high tensile strength, simple construction process, short construction period and low cost. Low and many other advantages. However, the carbon fiber continuous sucker rods that have been used in oil fields have poor wear resistance, and their service life needs to be improved. [0003] In order to solve the above problems, researchers have developed a series of new carbon fiber sucker rods. These new sucker rods mainly improve the wear resistance of the sucker rods in three ways: [0004] One is to add wear-resistant particles to the epoxy resin of the sucker rod, and impr...

AI Technical Summary

Problems solved by technology

At the same time, the polyethylene layer may fall off during the use of the sucker rod

[0006] The third is to set a wear-resistant fiber layer or a wear-resistant fabric layer in the sucker rod. The problem with this structure is that the impregnation performance of the strands of fiber or fabric is limited, the degree of combination with epoxy resin and the impregnation of epoxy resin The wear resistance is relatively poor, resulting in a greatly reduced wear resistance of wear-resistant materials that make up wear-resistant fibers or wear-resistant fabrics

[0007] Therefore, it is necessary to develop a new type of carbon fiber continuous sucker rod to solve the problem of poor wear resistance of carbon fiber continuous sucker rods in the prior art

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