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Crude oil gathering and transportation pipe bundle resistance reduction method and crude oil gathering and transportation pipe bundle

A crude oil and oleophobic technology, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as corrosion, large amount of addition, perforation, etc., and achieve drag reduction along the way and reduce interaction force , Reduce the effect of resistance along the way

Pending Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has problems such as large amount of addition, corrosion, perforation, and scaling in application, and the effect is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The inner wall of the metal tube bundle with an inner diameter of 80mm is ground and pretreated to obtain a rough metal surface with nanoscale structure on the metal surface of the inner wall of the tube bundle, and then the rough metal surface is heat treated to obtain a rough metal oxide layer with nanoscale structure. The heat treatment method is to clean the heat exchanger tube bundle after grinding and pretreatment with absolute ethanol, place it in a heating device, heat it to 400 °C at a heating rate of 10 °C / min, heat it at a constant temperature for 20 hours, and then cool it naturally. . After cooling, a 3 mm thick superhydrophilic and oleophobic layer is coated on the rough metal oxide layer to form a superhydrophilic and oleophobic surface. In this embodiment, the superhydrophilic and oleophobic material layer is a polyacrylonitrile material.

[0037](2) Carry out the crude oil gathering and transportation experiment using the above-prepared tube bundles. Un...

Embodiment 2

[0039] (1) Grinding the inner wall of the metal tube bundle with an inner diameter of 150 mm to obtain a rough metal surface with a nano-scale structure on the metal surface of the inner wall of the tube bundle, and then heat-treating the rough metal surface to obtain a nano-scale structure. Rough metal oxide layer. The method of heat treatment is to clean the heat exchanger tube bundle after grinding and pretreatment with absolute ethanol, place it in a heating device, heat it to 800 °C at a heating rate of 8 °C / min, heat it at a constant temperature for 3 hours, and then cool it naturally. . After cooling, a 2.5 mm thick superhydrophilic and oleophobic layer was coated on the rough metal oxide layer to form a superhydrophilic and oleophobic surface. In this embodiment, the superhydrophilic and oleophobic material layer is a polyacrylonitrile material.

[0040] (2) The above-prepared tube bundles are used for gathering and transportation experiments. Under the condition that...

Embodiment 3

[0042] (1) Grinding the inner wall of the metal tube bundle with an inner diameter of 200 mm to obtain a rough metal surface with a nano-scale structure on the metal surface of the inner wall of the tube bundle, and then heat-treating the rough metal surface to obtain a nano-scale structure. Rough metal oxide layer. The heat treatment method is to clean the heat exchanger tube bundle after grinding and pretreatment with absolute ethanol, place it in a heating device, heat it to 500 °C at a heating rate of 10 °C / min, heat it for 10 hours, and then cool it naturally. After cooling, a 2 mm thick superhydrophilic and oleophobic layer was coated on the rough metal oxide layer to form a superhydrophilic and oleophobic surface. In this embodiment, the superhydrophilic and oleophobic material layer is a polyacrylonitrile material.

[0043] (2) The above-prepared tube bundles are used for gathering and transportation experiments. Under the condition that the oil gathering temperature i...

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PUM

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Abstract

The invention provides a crude oil gathering and transportation tube bundle resistance reduction method and a crude oil gathering and transportation tube bundle, and the crude oil gathering and transportation tube bundle resistance reduction method comprises the following steps: (1) carrying out micro-nanocrystallization on the inner wall of the crude oil gathering and transportation tube bundle; and (2) carrying out low surface energy modification on the inner wall of the micro-nano crude oil gathering and transportation tube bundle to form a super-hydrophilic oleophobic surface. According to the crude oil gathering and transportation tube bundle resistance reduction method and the crude oil gathering and transportation tube bundle, the resistance of crude oil in the gathering and transportation tube bundle can be reduced, so that the crude oil gathering and transportation efficiency is improved, and meanwhile the tube bundle has anti-corrosion and scale inhibition effects.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to a method for reducing drag of a crude oil gathering and transportation pipe bundle and a crude oil gathering and transportation pipe bundle. Background technique [0002] Tube bundle transportation is a commonly used transportation method in the petroleum industry. However, the disadvantages of tube bundle transportation are also obvious, that is, there are bottlenecks in transportation volume and transportation pressure. At the same time, long-distance transportation is the characteristic of tube bundle transportation, but the longer the distance, the greater the power source required, and the higher the economic cost. Therefore, how to reduce costs and increase efficiency is the problem that drag reduction technology needs to be completed and improved. [0003] Oilfield long-distance pipeline bundles have always been the common goals pursued by scientists from all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/16
CPCF17D1/16
Inventor 赵毅黎志敏姚彬周勇赵德银钟荣强刘国虎郭靖刘冀宁李鹏庞艳萍苏德江张菁崔伟徐梦瑶
Owner CHINA PETROLEUM & CHEM CORP
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