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High-temperature-resistant bismaleimide resin fiber reinforced nonmetal oil pipe and manufacturing method thereof

A dual-horse resin and fiber-reinforced technology, applied in the direction of pipes, rigid pipes, pipeline protection, etc., can solve the problems of being unable to meet the environmental requirements of high temperature, high pressure, harsh corrosion conditions, high operating costs, and the weight of oil pipes, etc., to achieve reduction Suspended weight of the tubing and difficulty of on-site construction operations, solution to high-temperature corrosion bottlenecks, and improved torsional performance

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The non-metallic oil pipes disclosed in the above patents have low temperature resistance and strength, and cannot meet the environmental requirements of high temperature, high pressure, and harsh corrosion conditions.
[0007] In view of the above problems, the present invention proposes to use Shuangma resin with high performance, low density (compared to metal) and good corrosion resistance, enhance the mechanical properties of the material through carbon fiber reinforcement, and design a special joint for non-metallic oil pipes to make the temperature resistance reach 250°C non-metallic oil pipes and joints with high temperature resistance, high strength, light weight, and corrosion resistance fundamentally solve the engineering problems of heavy oil pipes, fast corrosion, difficult workover and high operating costs

Method used

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  • High-temperature-resistant bismaleimide resin fiber reinforced nonmetal oil pipe and manufacturing method thereof
  • High-temperature-resistant bismaleimide resin fiber reinforced nonmetal oil pipe and manufacturing method thereof
  • High-temperature-resistant bismaleimide resin fiber reinforced nonmetal oil pipe and manufacturing method thereof

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Effect test

Embodiment 1

[0038] Such as figure 1As shown, a high-temperature-resistant Shuangma resin fiber reinforced non-metallic oil pipe includes a resin-based composite material inner layer 3, a long fiber winding layer 2, and an outer resin layer 1 from the inside to the outside. The resin-based composite material inner layer 3 It is a double-horse resin material mixed with chopped carbon fibers, and the long-fiber winding layer 2 is a continuous carbon fiber tape wound on the inner resin layer according to certain rules, and the outer resin layer 1 is made of double-horse resin material, and the outer resin layer will be Filament wrap for complete wrap. The inner and outer layers of the oil pipe are made of Shuangma resin, which provides the oil pipe with low density, corrosion resistance, and high temperature resistance; the fiber tape provides better tensile performance, and better adapts to the high-pressure environment inside and outside the oil pipe.

[0039] According to the above soluti...

Embodiment 2

[0048] Such as Figure 4 A method for making a high-temperature-resistant dual-horse resin fiber-reinforced non-metallic oil pipe according to the above-mentioned embodiment includes the following steps:

[0049] S1: Prepare Shuangma resin-chopped carbon fiber raw materials by pre-mixing method, use molds, and make base pipes by extrusion molding process;

[0050] S2: After the fiber tape is pre-impregnated with Shuangma resin, it is directly wound on the base pipe, one layer of the fiber is wound at ±10°, and one layer of the fiber is wound at ±60° and ±85°, and the fiber needs to be wound to the pipe end;

[0051] S3: external dip coating with Shuangma resin;

[0052] S4: The base pipe wrapped with the pre-impregnated Shuangma resin carbon fiber tape is cured and formed by heating.

[0053] Laying at ±10° can improve the tensile performance of the material, laying at ±60° can improve the torsional performance of the material, and laying at ±85 can improve the internal pre...

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Abstract

The invention discloses a high-temperature-resistant bismaleimide resin fiber reinforced non-metal oil pipe and a manufacturing method thereof, and relates to the technical field of oil exploitation equipment, and the high-temperature-resistant bismaleimide resin fiber reinforced non-metal oil pipe specifically comprises an inner layer of a base pipe made of bismaleimide resin-chopped carbon fibers from inside to outside, a fiber belt which is pre-impregnated with bismaleimide resin and then is directly wound on the base pipe, and an outer resin layer is dip-coated; and heating and curing to form the composite material non-metal oil pipe. The high-temperature-resistant bismaleimide resin fiber reinforced non-metal oil pipe manufactured by the method has the characteristics of high temperature resistance, high strength, light weight, wear resistance and corrosion resistance; compared with the existing non-metal pipe, the temperature resistance, the tensile strength, the internal pressure resistance and the torsion resistance are greatly improved. The non-metal oil pipe is applied to ultra-deep, high-pressure and high-temperature oil wells, and the engineering problems that a traditional metal oil pipe is large in dead weight, rapid in corrosion, difficult in well repair and high in operation cost can be solved.

Description

technical field [0001] The invention relates to the technical field of oil extraction equipment, in particular to a high-temperature-resistant dual-horse resin fiber-reinforced non-metallic oil pipe for oil extraction and a manufacturing method thereof. Background technique [0002] With the rapid development of the petroleum industry, the demand for oil pipelines is increasing day by day. The application of metal pipes in my country's oilfield exploration and development, oil and gas transportation, oil refining and chemical industry is relatively extensive and mature, and more than 95% of them have been localized and are constantly being improved and optimized. However, with the continuous increase of deep wells (>8000 meters), the working conditions and environment continue to deteriorate (bottomhole temperature is as high as 200°C, H2S and CO2 partial pressures both exceed 1MPa), resulting in heavy suspension of pipe strings (>100T), making drilling and workover di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14F16L15/00F16L57/00F16L58/02B29C48/09B29C48/00B29L23/00
CPCF16L9/14F16L15/00F16L57/00F16L58/02B29C48/09B29C48/001B29L2023/22
Inventor 曾文广郭玉洁赵海洋刘斌张江江陈苗魏晓静高秋英刘冬梅许艳艳孙海礁陈浩应海玲
Owner CHINA PETROLEUM & CHEM CORP
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