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Pipeline and pipeline with coupling

A pipeline and airgel technology, which is applied in the field of pipelines with couplings, can solve the problems that oil production pipelines cannot have thermal insulation performance, corrosion resistance and wear resistance, etc., so as to eliminate heat convection, improve thermal insulation performance, and improve The effect of thermal insulation effect

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defect that the existing oil production pipelines cannot have thermal insulation performance, corrosion resistance and wear resistance, and provide a pipeline that can simultaneously have excellent thermal insulation performance, corrosion resistance and wear resistance and a pipe with a coupling

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0057] The preparation method of the pipeline is not particularly limited in the present invention, and various existing methods for forming a multi-layer tubular structure can be used, which will not be repeated here.

[0058] The pipe with coupling provided by the present invention includes at least two of the above pipes and at least one coupling. in, figure 2 It is an axial sectional view of the pipe with a collar.

[0059] According to the present invention, in order to facilitate the tight fit between the pipe and the coupling, preferably, the outer surface of the end of the pipe connected to the coupling has an external thread structure 10, and the coupling is corresponding The ground has an internal thread structure, so that the two are screwed together.

[0060] According to the present invention, in order to facilitate the tight fit between the pipe and the coupling, preferably, the end of the pipe connected to the coupling is provided with a flared joint 17 . Mo...

preparation example 1

[0081] This preparation example is used to illustrate the thermal insulation powder coating provided by the present invention and its preparation method.

[0082] (1) Spray the solution containing the surface modifier on the surface of the silica porous material:

[0083] Dissolve 5 grams of γ-(methacryloyloxy)propyltrimethoxysilane in absolute ethanol at a mass ratio of 3:100, stir until completely dissolved, and adjust the pH of the solution to 3 with oxalic acid , to obtain an ethanol solution containing γ-(methacryloyloxy)propyltrimethoxysilane. 200 grams of silicon dioxide porous material is added in the centrifuge mixing equipment, then 100 grams of the above-mentioned solution containing γ-(methacryloyloxy) propyltrimethoxysilane is sprayed on the surface of the silicon dioxide porous material and Mix at a low speed of 300r / min for 300min, then mix at a high speed of 2000r / min for 120min.

[0084] (2) Preparation of dry surface-modified silica porous material:

[008...

preparation example 2

[0094] This preparation example is used to illustrate the thermal insulation powder coating provided by the present invention and its preparation method.

[0095] (1) Spray the solution containing the surface modifier on the surface of the silica porous material

[0096] Dissolve 5 grams of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane in absolute ethanol at a mass ratio of 3:100, stir until completely dissolved, and use acetic acid to adjust the pH of the solution Adjust to 6 to obtain an ethanol solution containing N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane. 200 grams of silicon dioxide porous material is added in the centrifuge mixing equipment, then 100 grams of the above-mentioned solution containing N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane is sprayed on the surface of the silicon dioxide porous material On the surface, mix at a low speed of 500r / min for 300min, and then mix at a high speed of 2500r / min for 120min.

[0097] (2) Preparation of dry surface-modi...

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Abstract

The invention provides a pipeline and a pipeline with a coupling. The pipeline comprises an anticorrosion wear-resistant liner (1), an inner pipe (2), a first insulation layer (3), a heat insulation layer (4), a second insulation layer (5), an outer pipe (6) and an outer anticorrosion layer (7) from inside to outside, the first heat insulation layer (3) and the second heat insulation layer (5) are made of same or different materials which are independently heat insulation and preservation powder coating containing aerogel and / or fiber strengthening aerogel fabric. The pipeline and the pipeline with the coupling have the advantages of excellent heat insulation performance, anticorrosion performance and wear resistance.

Description

technical field [0001] The invention relates to a pipeline and a pipeline with a collar. Background technique [0002] In the process of extracting underground resources, such as oil and geothermal resources, pipelines play a vital role in the entire fluid transportation process. At the same time, with the country's vigorous promotion of green economy and the background of energy conservation and emission reduction, the mining of underground resources also poses higher challenges to the use of pipelines. Among them, the two biggest challenges are heat preservation and corrosion protection. [0003] Taking crude oil extraction as an example, most of the crude oil produced in my country's oilfields is high waxy crude oil. Studies have shown that the key factor affecting wax deposition on long-distance pipelines is temperature. The temperature has two effects. On the one hand, because the oil temperature at the pipe wall is lower than the initial crystallization temperature ...

Claims

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Application Information

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IPC IPC(8): F16L9/14F16L59/14F16L59/02F16L57/06
CPCF16L9/14F16L57/06F16L58/00F16L59/02F16L59/14
Inventor 邹弋姚雪容郑俊鹏任毅马蓓蓓李娟罗水源
Owner CHINA PETROLEUM & CHEM CORP
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