An installation method of steel-plastic composite pipeline for oil field gathering and transportation

Abstract

The invention provides a mounting method of a steel-plastic composite pipeline for gathering and transportation in an oil field. Segmental plastic pipes in fusion welding connection are subjected to diameter shrinkage processing and then are nested and connected with steel pipes. According to the mounting method, the whole pipeline does not have seams or weak parts, the lining plastic pipelines are firmly combined with the steel pipes, the strength function, the corrosion-resistant function and the non-leakage sealing function of 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 an installation method of a gathering and transportation pipeline, which is a steel-plastic composite pipeline installation method. 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 critical. Many documents have propos...

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

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