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Manufacturing and mounting method of steel-plastic composite pipeline for gathering and transportation in oil field

A steel-plastic composite pipe and steel-plastic composite technology, which is applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of steel-plastic composite pipes, such as the weakening of strength and anti-corrosion effects, and fluid leakage, so as to reduce concentration. The effect of convenient transmission and maintenance, pipeline installation and low manufacturing difficulty

Inactive Publication Date: 2015-08-26
CHANGCHUN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The connection method of the above-mentioned steel-plastic composite pipe is mostly flange connection or flange connection with adhesive, and this sealing combination is the weak part of the steel-plastic composite pipe, which greatly improves the strength and anti-corrosion effect of the steel-plastic composite pipe. Weakened, especially under the condition of high temperature and high pressure fluid, it is easy to cause fluid leakage at the nozzle seal connection between steel-plastic composite pipes

Method used

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  • Manufacturing and mounting method of steel-plastic composite pipeline for gathering and transportation in oil field
  • Manufacturing and mounting method of steel-plastic composite pipeline for gathering and transportation in oil field
  • Manufacturing and mounting method of steel-plastic composite pipeline for gathering and transportation in oil field

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Embodiment

[0044] Selected materials: (1) Select seamless steel pipes with an outer diameter of φ114mm, an inner diameter of φ97mm (wall thickness 8.5mm), and a length of 9500mm, and pipe fittings such as tees and elbows with the same inner diameter, including prefabricated flanges and collars for welding connections at the nozzles Seamless steel pipes, tees and elbows are prefabricated with flanges or collars for welded connections; (2) Plastic pipes are made of high-density polyethylene (HDPE) with an outer diameter of φ102, which is about 5% larger than the inner diameter of the steel pipe, and the wall thickness is 9mm; ⑶The steel pipe hoop is a seamless steel pipe with an outer diameter of φ133mm, an inner diameter of φ121mm (wall thickness 6mm), and a length of 320mm; ⑷Epoxy resin adhesive, etc.

[0045] step

[0046] 1) Preparation of steel-plastic composite pipe: refer to figure 1 Heat the high-density polyethylene pipe 1 cut to a length of 9560mm to 45°C for 10 minutes, then us...

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Abstract

The invention provides a manufacturing and mounting method of a steel-plastic composite pipeline for gathering and transportation in an oil field. According to the method, steel-plastic composite pipes are prepared firstly, and then plastic pipes of the steel-plastic composite pipes are connected with steel pipes after subjected to fusion welding connection during mounting of the pipeline, so that the whole pipeline does not have seams or weak parts; the lining plastic pipes are firmly combined with the steel pipes, the strength function, the corrosion-resistant function and the non-leakage sealing function of the steel-plastic composite pipes can be fully performed during gathering and transporting of fluids, the high-temperature, high-pressure and high-corrosion fluids can be conveyed for a long distance safely and reliably, maintenance of the steel-plastic composite pipeline for gathering and transportation can be reduced, the gathering and transportation efficiency is improved, and the service life of the pipeline is remarkably prolonged.

Description

technical field [0001] The invention relates to a method for manufacturing and installing a gathering and transportation pipeline, and is a method for manufacturing and installing a steel-plastic composite pipeline. Background technique [0002] The plastic-lined steel-plastic composite pipeline has the advantages of high corrosion resistance, high load capacity, low fluid resistance, safety and sanitation, and long service life. It has been widely used in various gathering and transportation fields such as oil and gas fields. The important key technology in the application of steel-plastic composite pipes is how to give full play to the performance of steel-plastic combination. It is necessary to ensure sufficient strength and reliable corrosion resistance, especially for steel-plastic composite pipes that transport high-temperature and high-pressure fluid media. The firm combination of lining plastic and steel pipe and the sealing technology of the nozzle are particularly ...

Claims

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Application Information

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IPC IPC(8): F16L9/147
CPCF16L9/147
Inventor 杨悦王淮赵国良
Owner CHANGCHUN UNIV OF TECH
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