Constant-temperature heat tracing carbon fiber continuous sucker rod, and preparation device and preparation method thereof

Abstract

The invention belongs to the field of oil extraction equipment in oil fields, and in particular relates to a constant-temperature heat tracing carbon fiber continuous sucker rod, and a preparation device and a preparation method thereof. The sucker rod comprises a carbon fiber core, a glass fiber layer coating the outer side of the carbon fiber core, and an epoxy resin layer coating the outer side of the glass fiber layer, wherein an electric heating strip A is arranged at the center of the carbon fiber core, the carbon fiber core is formed by carbon fiber bundles adhered by resin, the glass fiber layer is composed of a glass fiber winding layer and a longitudinal glass fiber layer, the glass fiber winding layer is wound on the outer side of the carbon fiber core, and glass fibers and carbon fibers forming the longitudinal glass fiber layer are arranged in parallel. The sucker rod provided by the invention is simple in technology and reasonable in layout; according to the preparation method provided by the invention, the multi-layer friction-resistant continuous sucker rod with a constant-temperature heating function and being capable of preventing paraffin precipitation can be produced, and the produced sucker rod has the multiple advantages of light weight, friction resistance, and high torsional strength, shearing strength and tensile strength.

Description

technical field [0001] The invention belongs to the field of oil production equipment in oilfields, and in particular relates to a constant-temperature heat tracing carbon fiber continuous sucker rod, a preparation device and a preparation method. Background technique [0002] The sucker rod is a kind of equipment commonly used in the oil production process. During oil production, the pump rod of the downhole oil pump is driven to reciprocate up and down by the sucker rod, so as to pump the oil and other liquids in the formation to the ground. During use, it is usually necessary to connect the sucker rod to thousands of meters. In this case, the sucker rod has to bear its own suspension weight and the load of the oil pump, so it bears a relatively large pulling force. Existing sucker rods are mostly made of steel, but steel has physical defects such as heavy weight, easy corrosion, and easy wear, which makes the loss of sucker rods high. In addition, most of the existing su...

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Problems solved by technology

But this kind of sucker rod also has some defects: 1. During the use of the existing carbon fiber sucker rod, there will be wax deposition on the outside, and the wax deposition will cause many negative effects on production; 2. The existing carbon fiber sucker rod The torsional strength of the carbon fiber sucker rod is relatively poor; 3. The direction of the carbon fiber and glass fiber in the existing carbon fiber sucker rod is the same as the length direction of the sucker rod. Glass fibers are easily incorporated into carbon fiber bundles, adversely affecting the strength of the sucker rod

4. The outer layer of the existing carbon fiber sucker rod is pure epoxy resin layer, which has poor wear resistance

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