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Anti-corrosion and abrasion-resistant steel plastic surface pipeline

A surface pipeline, anti-corrosion and wear-resistant technology, applied to pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve problems such as limitations in high temperature resistance, partial wear of sucker rods, etc., and achieve high wear resistance and good performance. High self-lubricating properties and fatigue strength

Inactive Publication Date: 2018-06-22
SHENGLI OILFIELD SHENGXIN ANTISEPSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of ultra-high molecular weight polyethylene lined pipe in terms of high temperature resistance, it can only withstand about 80°C, and it is easy to be eccentrically worn by the sucker rod

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 1 part of polypropylene, 2,5-dimethyl-2,5-bis(tert-butyl peroxide)-3-hexyne 2 2 parts, 2 parts of acrylic siloxane, 1 part of aluminum oxide, 2 parts of glass beads, 2 parts of glass fiber, 1 part of molybdenum disulfide, 1 part of acicular wollastonite, and 1 part of diatomaceous earth. In this embodiment, the viscosity-average molecular weight of the ultra-high molecular weight polyethylene is about 1.6 million, and the polypropylene is a copolymerized polypropylene with a melt index of 5 g / min.

[0035] (2) Mix the raw materials weighed in step (1) evenly in a high-speed mixer to obtain a mixture;

[0036] (3) Add the mixture to the extruder, feed 1 part by weight of sulfur dioxide during the extrusion process, and add it to the molding die after extrusion to obtain an ultra-high molecular weight polyethylene lined pipe after molding. The extrusion temper...

Embodiment 2

[0038] (1) Weigh the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 3 parts of polypropylene, 2,5-dimethyl-2,5-bis(tert-butyl peroxide)-3-hexyne 4 4 parts of vinyl siloxane, 2 parts of aluminum oxide, 1 part of glass microspheres, 2 parts of glass fiber, 2 parts of molybdenum disulfide, 1 part of acicular wollastonite, and 2 parts of diatomaceous earth. In this embodiment, the viscosity-average molecular weight of the ultra-high molecular weight polyethylene is about 1.9 million, and the polypropylene is a copolymerized polypropylene with a melt index of 5 g / min.

[0039] (2) Mix the raw materials weighed in step (1) evenly in a high-speed mixer to obtain a mixture;

[0040] (3) Add the mixture to the extruder, feed 2 parts by weight of sulfur dioxide during the extrusion process, and add it to the molding die after extrusion to obtain an ultra-high molecular weight polyethylene lined pipe after molding. The extrusion temper...

Embodiment 3

[0042] (1) Weigh the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 2 parts of polypropylene, 2,5-dimethyl-2,5-bis(tert-butyl peroxide)-3-hexyne 3 Parts, 2 parts of tetramethyltetravinyl cyclotetrasiloxane, 1 part of aluminum oxide, 1 part of glass microspheres, 2 parts of glass fiber, 2 parts of molybdenum disulfide, 1 part of acicular silica lime, diatomaceous earth 2 servings. The viscosity-average molecular weight of the ultra-high molecular weight polyethylene in this embodiment is about 1.8 million, and the polypropylene is a copolymerized polypropylene with a melt index of 5 g / min.

[0043] (2) Mix the raw materials weighed in step (1) evenly in a high-speed mixer to obtain a mixture;

[0044](3) Add the mixture to the extruder, feed 2 parts by weight of sulfur dioxide during the extrusion process, and add it to the molding die after extrusion to obtain an ultra-high molecular weight polyethylene lined pipe after mold...

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Abstract

The invention discloses an anti-corrosion and abrasion-resistant steel plastic surface pipeline. The anti-corrosion and abrasion-resistant steel plastic surface pipeline comprises a steel pipe and a liner pipe arranged in the steel pipe. The liner pipe comprises the following raw material compositions, by weight, 100 parts of ultrahigh molecular weight polyethylene, 1-5 parts of polypropylene, 2-4parts of 2,5-Di-(tert-butylperoxy)-2,5-dimethyl-3-hexyne, 1-4 parts of alkenyl-containing siloxane, 1-3 parts of sulfur dioxide and 5-10 parts of fillers. The ultrahigh molecular weight polyethyleneliner pipe is adopted for the anti-corrosion and abrasion-resistant steel plastic surface pipeline, not only are properties such as the corrosion resistance, the abrasion resistance, the high-temperature resistance and the impact strength of the liner pipe greatly improved, but also the deposition velocity of pipeline surface scale is also greatly reduced, and thus a good anti-scaling effect is realized.

Description

technical field [0001] The invention relates to an anti-corrosion and wear-resistant steel-plastic ground pipeline, in particular to a high-temperature-resistant, corrosion-resistant, wear-resistant and anti-scaling steel-plastic ground pipeline. Background technique [0002] As an important consumable in the field of petroleum and natural gas exploration and development, oil well pipe occupies an important position in the petroleum industry. It mainly includes drill string components, such as drill pipe, kelly, drill collar, casing and oil pipe, etc. Oil well pipes generally use steel oil pipes, which have a short service life and a short replacement cycle, mainly due to wear and corrosion during use. Among them, on the one hand, the wear is mainly manifested as eccentric wear, which is easy to intensify the electrochemical corrosion of the oil pipe after eccentric wear; It is necessary to frequently lift wells and stop for cleaning, which not only reduces production effic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147C08L23/06C08L23/14C08K13/04C08K5/14C08K5/5425C08K3/30B29C47/00
CPCF16L9/147B29C48/09C08L23/06C08L2203/18C08L2205/03C08L2207/068C08L23/14C08K13/04C08K5/14C08K5/5425C08K3/30
Inventor 蒲宝林任伟周泉王磊王耀东王建春康寿惠许文忠于军吴昊
Owner SHENGLI OILFIELD SHENGXIN ANTISEPSIS
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