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

Abstract

The invention belongs to the field of oil production equipment, and particularly relates to a carbon fiber continuous sucker rod provided with a continuous flocculent wear-resistant layer internally. The carbon fiber continuous sucker rod comprises a carbon fiber core body, the wear-resistant layer and an epoxy resin layer, a rough yarn layer is arranged at the outside of the carbon fiber core body, the wear-resistant layer is arranged at the outside of the rough yarn layer, a spun yarn layer is arranged at the outside of the wear-resistant layer, and the epoxy resin layer is arranged at the outside of the spun yarn layer; the rough yarn layer is made of aramid fibers with the fineness of 3000 D, the wear-resistant layer is made of flocculent polypropylene fiber strips in a coating mode, and the spun yarn layer is made of aramid fibers with the fineness of 1100 D; and the length directions of the carbon fibers, the aramid fibers and the polypropylene fiber strips are all consistent with the axis direction of the sucker rod. According to the carbon fiber continuous sucker rod provided with the continuous flocculent wear-resistant layer internally, polypropylene fiber adopted is of a flocculent structure, epoxy resin can be more fully immersed among all fiber filaments in the polypropylene fiber strips, so that the combination degree of wear-resistant materials and the epoxy resin and the immersing degree of the epoxy resin are enhanced greatly, and therefore the wear-resistant performance of the wear-resistant materials can be exerted fully.

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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