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Fatigue-resistant composite material continuous sucker rod, preparation device and preparation method

A composite material and sucker rod technology, applied in chemical instruments and methods, drill pipe, earthwork drilling, etc., can solve problems such as corrosion and eccentric wear, reduce interface stress difference, improve interlayer bonding strength, equipment The effect of simple process operation

Pending Publication Date: 2021-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a fatigue-resistant composite material continuous sucker rod and its preparation device and preparation method, with the main purpose of solving the problems of corrosion and eccentric wear in oil production in oil fields and the problem of oil production in deep wells and ultra-deep wells, to prepare interlayer bonding Sucker rod with high strength, fatigue resistance and convenient operation

Method used

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  • Fatigue-resistant composite material continuous sucker rod, preparation device and preparation method
  • Fatigue-resistant composite material continuous sucker rod, preparation device and preparation method
  • Fatigue-resistant composite material continuous sucker rod, preparation device and preparation method

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Embodiment 1

[0045] 190 bundles of T300-12K carbon fibers are soaked with epoxy resin in the carbon fiber glue tank (1), the glue ratio is resin: curing agent = 100:120, heated by the carbon fiber mold (2), the heating temperature is 120 ° C, the mold length is 500mm, 30 bundles of T300-12K carbon fiber and 20 bundles of WS3000-2400tex glass fiber mixed layer pass through the middle hole of the preformed splitter plate (5), and 80 bundles of WS3000-2400tex glass fiber layer pass through the outer layer hole of the preformed splitter board (5). Layer 400g / m 2 The glass fiber cloth passes through the spreading board (6), and after being completely coated, it is soaked with resin through the high-pressure injection box (7). The pressure is injected into the high-pressure injection box (7), and then heated and solidified by the outer mold (9) at a temperature of 150°C or 195°C and a speed of 0.25m / min to form a fatigue-resistant multi-layer gradient composite continuous sucker rod. Diameter 1...

Embodiment 2

[0047] According to Embodiment 1, use epoxy resin, the ratio is, resin:curing agent=100:100, production speed 20cm / min, carbon fiber mold temperature 100 ℃, outer layer mold (9) heat curing, temperature is 130 ℃ or 165 ℃ , forming a fatigue-resistant multi-layer gradient composite continuous sucker rod with a diameter of 19mm and a Tg of 125°C.

[0048] The Tg value refers to the glass transition temperature, which can be understood as the softening temperature of the material. In addition, resins and curing agents required for curing molds in this field are commonly used materials and belong to known technologies. When making similar composite materials, they all belong to the same resins and curing agents.

[0049] All the components themselves that are not discussed in this application, and the connection methods of each component in this application belong to the known technology in the technical field, and will not be described in detail. Such as welding, threaded connec...

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Abstract

The invention discloses a fatigue-resistant composite material continuous sucker rod, a preparation device and a preparation method, the cross section structure of the fatigue-resistant composite material continuous sucker rod comprises a carbon fiber reinforcement layer, an interlayer bonding transition layer, a glass fiber reinforcement layer and a glass fiber cloth layer in sequence from inside to outside. The interlayer bonding transition layer is formed by mixing carbon fibers and glass fibers together. Carbon fibers in the carbon fiber reinforcement layer are axially arranged according to the rod body of the continuous sucker rod; glass fibers in the glass fiber reinforcement layer are arranged in the axial direction of the continuous sucker rod body. The invention mainly aims to solve the problems of corrosion and eccentric wear in oil extraction production in an oil field and the problem of oil extraction in deep wells and ultra-deep wells, and prepares the sucker rod which is high in interlayer bonding strength, resistant to fatigue and convenient to operate and use.

Description

technical field [0001] The invention relates to the field of oil production equipment in oilfields, in particular to a continuous sucker rod made of fatigue-resistant composite material, a preparation device and a preparation method. Background technique [0002] With the development of more and more complex types of reservoirs, the continuous increase of well depth and the continuous deterioration of the well and mine environment, the problems of corrosion and eccentric wear have become problems that need to be solved urgently in the oil recovery process. Composite sucker rods have superior properties such as light weight, high strength, and corrosion resistance, and have begun to gradually replace traditional metal sucker rods. [0003] The currently used composite sucker rods mainly include FRP sucker rods and carbon fiber reinforced composite continuous sucker rods. FRP sucker rods are prepared by pultrusion of glass fiber reinforced thermosetting resin at one time, and...

Claims

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Application Information

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IPC IPC(8): B32B1/00B32B3/28B32B9/00B32B9/04B32B17/04B32B17/12E21B17/00
CPCB32B1/00B32B3/28B32B5/02B32B5/08B32B5/26E21B17/00B32B2262/101B32B2262/106B32B2262/14B32B2307/552B32B2307/546
Inventor 汪云家智勤功于昭东张中慧刘晓玲郑强张方圆王慧莉黄润晶
Owner CHINA PETROLEUM & CHEM CORP