Method for predicting degree of internal corrosion of pipe before production
An internal corrosion, pipeline technology, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problems of high operation cost and time-consuming operation
Active Publication Date: 2018-06-26
PETROCHINA CO LTD
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[0006] In order to solve the problems of high operating cost and time-consuming operation in the prior art, the embodiment of the present invention provides a method for predicting the degree of internal corrosion of the pipeline before it is put into production
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[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.
[0052] An embodiment of the present invention provides a method for predicting the degree of internal corrosion of a pipeline before it is put into production. The method includes the following steps:
[0053] Step a, determine the internal corrosion influencing factors before the pipeline is put into production, and score each internal corrosion influencing factor;
[0054] Step b, setting the weight coefficient of each internal corrosion influencing factor;
[0055] Step c, according to the score and weight coefficient of each internal corrosion influencing factor of the pipeline, use the weight analysis method to obtain the evaluation score of the internal corrosion risk of the pipeline;
[0056] Step d. Predict the degree of internal corrosion of the pipeline before commiss...
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Abstract
The invention discloses a method for predicting the degree of internal corrosion of a pipe before production and belongs to the technical field of corrosion control of oil and gas pipes. The method comprises a, determining internal corrosion influencing factors before pipe production and scoring the internal corrosion influencing factors, b, setting weight coefficients of all the internal corrosion influencing factors, c, according to the scores and weight coefficients of the internal corrosion influencing factors of the pipe, acquiring an evaluation score of the internal corrosion risk of thepipe through a weight analysis method and d, predicting the degree of internal corrosion of a pipe before production according to the evaluation score of the internal corrosion risk of the pipe. Themethod can effectively predict the degree of internal corrosion before the pipe production, is easy to operate and realizes a low cost.
Description
technical field [0001] The invention relates to the technical field of corrosion control of oil and gas pipelines, in particular to a method for predicting the degree of internal corrosion of pipelines before they are put into production. Background technique [0002] Pipeline transportation is the most common way of oil and gas transportation in the process of oil and gas development, and the degree of internal corrosion of oil and gas pipelines affects the safe operation of pipelines. Among them, some pipelines have formed internal corrosion before they are put into production, and there are many factors that affect the internal corrosion of pipelines. Factors such as pigging and drying conditions, the time interval between hydrostatic testing and pipeline commissioning, and whether internal corrosion control measures are taken affect the degree of internal corrosion in pipelines. Therefore, if effective internal corrosion detection is carried out before the pipeline is p...
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IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 刘猛赵连玉刘文会姜有文燕冰川赵晋云孙伶张丰赵君盖建楠赵建涛刘振斌
Owner PETROCHINA CO LTD