Method for installing and constructing 56-inch oil and gas conveying pipelines

A technology for conveying pipelines and construction methods, which is applied in the directions of pipeline laying and maintenance, pipes/pipe joints/pipes, mechanical equipment, etc. The effect of increasing stability, strong construction standardization, and reducing the probability of errors

Active Publication Date: 2019-02-15
SICHUAN NO 2 ELECTRIC POWER CONSTR CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Since most of Saudi Arabia is a desert, the supporting capacity of the land is unstable, and the weight of the 56-inch pipeline is he

Method used

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  • Method for installing and constructing 56-inch oil and gas conveying pipelines
  • Method for installing and constructing 56-inch oil and gas conveying pipelines

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[0024] The present invention will be further described below in conjunction with the drawings and embodiments.

[0025] The installation and construction method of the 56-inch oil and gas pipeline of the present invention includes the following steps:

[0026] A. Inspect the pipeline to be installed. Specifically, after the pipeline arrives at the site, the QC inspection will be performed first, and the technician will re-inspect the pipeline before installation. Check the surface of the pipeline to ensure that there are no cracks, pores, slag inclusions, and sand sticking. , Missing welding, heavy leather and other defects, the surface depression depth is less than 1.5mm, the maximum size of the depression length is less than 5% of the pipe circumference and less than 40mm.

[0027] B. The 56-inch pipe has two wall thickness specifications of 25.4mm and 28.58mm, and it is forbidden to mix and substitute. Many pipes in the pipeline have the same wall thickness and length, but substi...

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Abstract

The invention discloses a method for installing and constructing 56-inch oil and gas conveying pipelines. The method comprises the following steps of (A) inspecting the pipelines to be installed; (B)setting pipeline numbers and forging serial numbers on all the pipelines to ensure that each pipeline has a unique pipeline number and a unique forging serial number; (C) arranging a bracket on the basis of a support arranged in advance according to a construction drawing; and (D) installing the pipelines. By means of the method, the stability of pipeline installation can be improved, and the service life can be ensured.

Description

technical field [0001] The invention relates to the technical field of oil and gas transportation, in particular to a method for installing and constructing a 56-inch oil and gas transportation pipeline. Background technique [0002] Saudi Aramco operates the world's largest oil and gas transmission network. The system is mainly used for the processing, transportation, use and sales of natural gas and other associated gases. It was founded in the mid-1970s and has become the backbone of Saudi Arabia's main industrial network. With the expansion of the mining scale, new pipelines need to be added at present. According to the plan, 10,700m of 56-inch (outer diameter) pipelines need to be added. The 56-inch pipelines are seamed pipes rolled and welded by steel plates. After sandblasting and painting, they are transported to the site, and then installed and welded one by one. [0003] Since most of Saudi Arabia is a desert, the supporting capacity of the land is unstable, and t...

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Application Information

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IPC IPC(8): F16L1/024F16L1/06F16L1/10
CPCF16L1/0246F16L1/06F16L1/10
Inventor 罗登勇丁旭
Owner SICHUAN NO 2 ELECTRIC POWER CONSTR CO
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