Pipeline Laying Method for Preventing Corrosion in Moisture Gathering Pipeline

Abstract

The invention belongs to the technical field of oil gas storage and transportation, and specifically relates to a pipeline paving method for preventing inside of a wet gas collecting and transportingpipeline from corrosion. The method comprises the steps of 1) drawing a pipeline elevation map; 2) acquiring the location information of low points in the pipeline elevation map; 3) calculating the elevation difference A1 between the location M0 of one low point and the location M1 of the closest high point and the elevation difference A2 between the location M0 of the low point and the location M2 of the closer high point; 4) modifying the pipeline elevation map by raising the high points or bringing down the low points until the elevation difference between the location M0 of the low point and the locations of two close high points is not less than the critical value A0; 5) repeating steps 3) and step 4) until the elevation difference between the locations of all low points and the locations of the close high points is adjusted; and 6) paving pipelines based on the adjusted and modified pipeline elevation map; and arranging an anti-corrosion coating in the pipeline at the location ofeach low point. With the adoption of the method, the technical problem of poor corrosion preventing effect of an existing wet gas collecting and transporting pipeline can be solved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas storage and transportation, and in particular relates to a pipeline laying method for preventing internal corrosion of moisture gathering and transportation pipelines. Background technique [0002] Gathering pipeline is a pipeline that transports raw gas produced by oil and gas wells or in branch gas gathering stations to the gas gathering terminal or treatment plant. The wet gas transported by the pipeline produces condensate water, or part of the formation water directly extracted from the oil and gas wells, which corrodes at the six o’clock position of the pipeline, forming a dense pitting zone distributed along the six o’clock position of the pipeline, making the pipeline’s effective The wall thickness is too thin to withstand the delivery pressure, causing pipeline failure and even accidents. [0003] The failure analysis of gathering and transportation pipelines in recent years has foun...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pipeline laying method for preventing internal corrosion of moisture gathering and transportation pipelines, which solves the technical problem of poor anticorrosion effect of existing moisture gathering and transportation pipelines

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