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

Method for rehabilitating oil-gas pipeline without transportation interruption

A technology for oil and gas pipelines and pipelines, applied in the field of non-stop repairing oil and gas pipelines, which can solve problems such as pollution, low work efficiency, and complicated operations, and achieve the effects of reducing switching process time, improving work efficiency, and simplifying repair operations

Active Publication Date: 2017-06-20
PETROCHINA CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the existing method for repairing oil and gas pipelines needs to shut down and empty the oil and gas pipelines. Long, low work efficiency, but also increase the labor intensity of construction personnel
At the same time, the long-term outage of oil and gas pipelines may cause safety accidents, such as the oil will solidify after long-term outage
In addition, during the process of venting oil and gas pipelines, oil and gas will leak into the surrounding environment, resulting in waste of oil and gas and environmental pollution

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
  • Method for rehabilitating oil-gas pipeline without transportation interruption
  • Method for rehabilitating oil-gas pipeline without transportation interruption
  • Method for rehabilitating oil-gas pipeline without transportation interruption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a method for repairing oil and gas pipelines without losing power, see figure 1 The method for repairing the oil and gas pipeline includes the following steps:

[0041] Step 101, obtaining the pipeline wall thickness of the part to be repaired on the oil and gas pipeline;

[0042] Step 102, obtaining the actual pressure of the parts on the oil and gas pipeline that need to be repaired;

[0043] Step 103, determining the welding process parameters according to the pipe wall thickness and the actual pressure, the welding process parameters include the diameter of the welding rod, the output current of the electric welding machine and the electric welding time;

[0044] Step 104, welding the pipe cover on the outer surface of the oil and gas pipeline to be repaired according to the welding process parameters.

[0045] In the oil and gas pipeline repair method provided in this embodiment, the welding process parameters such as the diameter of the ...

Embodiment 2

[0047] This embodiment provides a method for repairing oil and gas pipelines without losing power. By matching the welding process parameters such as the diameter of the welding rod, the output power of the electric welding machine, and the welding time with the wall thickness of the pipeline and the pressure of the pipeline, the welding part of the oil and gas pipeline can withstand welding. Changes in conditions such as temperature and pressure during the welding process prevent the oil and gas pipeline from breaking during the welding process, so as to realize the repair of the oil and gas pipeline without losing power. see figure 2 , the method for repairing the oil and gas pipeline comprises the following steps:

[0048] Step 201, construction preparation.

[0049] First of all, in the standardized construction operation pit, clean up the parts that need to be repaired on the oil and gas pipeline, and remove the insulation layer and anti-corrosion layer on the surface. ...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The present invention discloses a method for rehabilitating an oil-gas pipeline without transportation interruption, and belongs to the technical field of oil-gas pipeline rehabilitation. The method for rehabilitating an oil-gas pipeline comprises the following steps: step a, obtaining a pipeline wall thickness of a to-be-repaired part of an oil-gas pipeline; step b, obtaining an actual pressure of the to-be-repaired part of the oil-gas pipeline; step c, determining welding process parameters based on the pipeline wall thickness and the actual pressure, the welding process parameters including a diameter of a welding rod, an output current of an electric welding machine, and electric welding time; and step d, welding a pipeline casing to the outside surface of the to-be-repaired part of the oil-gas pipeline. By means of this method, an oil-gas pipeline can be rehabilitated without transportation interruption with high rehabilitation efficiency, low labor intensity of an operator, and no environmental pollution.

Description

technical field [0001] The invention relates to the technical field of repairing oil and gas pipelines, in particular to a method for repairing oil and gas pipelines without losing power. Background technique [0002] Oil and gas pipelines will be partially corroded during the long-term transportation of oil and gas, and the corroded parts will leak, seriously affecting the normal transportation of oil and gas and posing safety hazards. Therefore, in order to ensure the normal transportation of oil and gas, it is necessary to repair the corroded parts of the oil and gas pipeline. [0003] Currently, the commonly used oil and gas pipeline repair method welds metal plates on the outer surface of the oil and gas pipeline to be repaired. However, due to the high pipe pressure during the transportation of oil and gas pipelines, the high temperature of the welding pool and poor pressure resistance, the oil and gas pipelines are likely to rupture during the welding process, and th...

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 Applications(China)
IPC IPC(8): B23K31/02
CPCB23K31/02B23K2101/06
Inventor 董传文董人杰王历红李军陈善峰张磊李保英丁芸
Owner PETROCHINA CO LTD
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