Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous sucker rod made of fiber reinforced composition and its making method

A composite material, fiber-reinforced technology, applied in the chemical characteristics of fibers, drill pipes, earthwork drilling, etc., can solve the problems of low interlaminar shear strength, increase the preparation process and cost of tie rods, poor bonding force, etc. Transverse splitting and wear resistance, improving lateral splitting strength and improving interlayer bonding force

Inactive Publication Date: 2006-04-19
胜利油田孚瑞特石油装备有限责任公司 +1
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the reinforced carbon fiber and glass fiber are unidirectionally arranged and pultruded, because there is no fiber reinforcement in the transverse direction, resulting in low interlayer shear strength, and the problem of longitudinal splitting of composite material bands is prone to occur in oil wells
Especially in deep well operations, the sucker rod is prone to local abrasion with the tubing, which reduces the service life
Chinese patent 00111155.8 discloses a high-toughness aramid carbon fiber composite pull rod, which uses aramid and carbon fiber as reinforcement materials and is compounded with an epoxy resin matrix. In order to prevent the local wear of the continuous pull rod and the oil pipe, wear-resistant Hoops and wear-resistant hoops need to be processed into parts separately, and then installed on the tie rods in sections, which increases the preparation process and cost of the tie rods
At the same time, the problem of low lateral strength of the sucker rod has not been solved
A composite tie rod disclosed in Chinese patent 00105168.7 uses carbon fiber and aramid fiber to weave the net cover, and a skeleton reinforcing fiber is worn in the middle. After being flattened, it is pultruded with resin to increase its transverse tensile strength. It is difficult to realize the industrialization of continuous reinforcing skeleton fibers in the middle
The cladding structure of the tie rod enhances the resistance to lateral splitting of the tie rod, and the use of aramid fiber as the coating layer improves the wear resistance of the tie rod itself, but the vinyl ester resin is used as the matrix to wrap carbon fiber with aramid fiber, and the interface The bonding force between them is poor, and under severe working conditions such as high temperature and repeated fatigue stretching during the oil production process, delamination of the coating layer and carbon fiber is prone to occur, which affects the service life
And pure aramid fabric for covering, the cost is higher
The patent also proposes to use glass fiber as the cladding layer, but its wear resistance and strength are not as good as aramid fiber
And the patent does not disclose the pultrusion preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Continuous sucker rod made of fiber reinforced composition and its making method
  • Continuous sucker rod made of fiber reinforced composition and its making method
  • Continuous sucker rod made of fiber reinforced composition and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The sucker rod (as image 3 shown), the section is 32×4.2mm rectangular, and the length is 2500 meters. The inner layer is unidirectionally arranged carbon fibers (brand: American Hexcel-AS4, 12K 160 bundles) with a volume percentage of 58%, of which: carbon fiber online surface treatment furnace 3 (see Figure 4 ) temperature is 400°C, the atmosphere is air, the size of the furnace body is: length*width*height=150*30*15 cm, and the carbon fiber wire speed is 0.35 m / s. The carbon fiber coming out from the treatment furnace enters the dipping tank 4, the vinyl ester matrix resin in the dipping tank: U.S. DOW chemical company resin: Derakane 411-350, curing agent: bis(4-tert-butylcyclohexyl) peroxydicarbonate Such as: commercially available Perkadox-16, 0.3% (accounting for resin weight ratio), tert-butyl peroxybenzoate Trigonox-C 0.9% (accounting for resin weight ratio), release agent: INT-PS125 1.2% (accounting for resin weight ratio) Compare). The aramid (or ultra-h...

Embodiment 2

[0035] The sucker rod prepared by the above embodiment, wherein: the die is 32×4.2mm, the pultrusion speed is 0.80m / min, the carbon fiber: T700S-12K of Japan Toray Company, the tensile strength is 4.9Gpa, the tensile modulus is 235Gpa, and the online The surface treatment temperature is 450°C, and the atmosphere is: mixed air with 10% oxygen. Matrix resin in the dipping tank: Hetron922 vinyl ester resin from Ashland Corporation of the United States, curing agent: Perkadox-16 0.3%, Trigonox-21 0.4%, Trigonox-C 0.2% (accounting for resin weight ratio), mold release agent: INT- PS125 0.8%. The post-heat treatment furnace temperature is 155°C. Other parameters are the same as in Example 1. The properties of the obtained sucker rod: interlaminar shear strength ILSS: 65Mpa, flexural strength: 1150Mpa, flexural modulus: 126Gpa, tensile strength: 2200Mpa, heat distortion temperature: 131°C.

Embodiment 3

[0037] The sucker rod prepared by the above embodiment, wherein: carbon fiber: Panex33-48K of Zoltek Company of the United States, tensile strength 3.6pa, tensile modulus 236Gpa, accounting for about 60% of the volume fraction of the entire composite material, online surface treatment furnace temperature : 375°C, the atmosphere is air, aramid fiberglass blended fabric: thickness 0.30mm, width 88mm, aramid fiber is Aksu Twaron-1100dtex-1000f, glass fiber is high-strength unsealed vinyl ester type 750dTex× 3 bundles, 8 warp yarns / 10mm, 7×2 weft yarns / 10mm, plain weave. The matrix resin in the dipping tank contains: (by weight) 100 parts of Hetron922 vinyl ester resin, 1.4 parts of compound curing agent, 1.0 part of release agent INT-PS-125, wherein the compound curing agent adopts: Perkadox-16 : 0.2 parts, 0.4 parts of 2.5-bis(2-ethylhexanoylperoxy)-2.5-dimethylhexane, 0.8 parts of Trigonox-C. The pultrusion speed is 1.5m / min, the three curing temperatures are: 80, 135, and 150...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

A continuous sucker rod made of fibre reinforced composition has a covered complex structure. Its covering layer uses the transversely arranged aramid fibres or ultrahigh-molecular polyethene fibres as weft and the glass fibres-aramid fibre or ultrahigh-molecular polyethene fibres band structure in longitudinal direction. Its preparing process includes such steps as dewinding fibres, surface treating, immersing in resin, covering solidifying, post-solidifying and twining. Its advantages are high strength and adhesion, and good antiwear nature.

Description

Technical field: [0001] The invention relates to a continuous sucker rod used in oil development and a pultrusion forming method thereof, in particular to a high-performance fiber / vinyl ester resin composite material sucker rod and a pultrusion cladding method. Background technique: [0002] Compared with traditional metal sucker rods, high-performance fiber-reinforced composite sucker rods have excellent properties such as low density, high strength, corrosion resistance, fatigue resistance, continuous coiling and over-stroke oil production, so they have become a sucker rod in oil production. Direction of development. For example, Chinese patent 99112384.0 discloses a "preparation method of flexible continuous flat-belt carbon fiber sucker rod and its joint", in which the sucker rod is made of carbon fiber and glass fiber as reinforcement materials, and epoxy resin is used as matrix material for pultrusion composite molding. The composite sucker rod has high strength, modu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00D01F11/16C08J5/06B32B1/00
Inventor 顾雪林杨小平常德友于运花李峰王成忠杜宾功李鹏
Owner 胜利油田孚瑞特石油装备有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com