Method and device for determining running parameters of waxy crude oil pipeline

Abstract

The embodiment of the invention provides a method and a device for determining running parameters of a waxy crude oil pipeline. The method comprises the following steps of presetting the standard failure probability of a pipeline between heating stations, wherein the pipe condensing accident occurrence probability of the pipeline between the heating stations during running is less than a first preset value through the standard failure probability, and the power of a heating furnace in each heating station is less than a second preset value; determining the initial value of the running parameter and the initial value of the environment parameter of the pipeline between the heating stations; according to the determined initial value of the running parameter and the initial value of the environment parameter, calculating the initial failure probability of the pipeline between the heating stations; according to the size relationship between the standard failure probability and the initial failure probability of the pipeline between the heating stations, adjusting the value of the running parameter of the pipeline between the heating stations, wherein the absolute value of the difference between the standard failure probability and the failure probability which is calculated according to the adjusted value of the running parameter and the initial value of the environment parameter is less than a third preset value. By adopting the method and the device disclosed by the embodiment of the invention, the running safety and economy of the whole pipeline can be balanced.

Description

technical field [0001] The invention relates to the technical field of crude oil transportation, in particular to a method and device for determining operating parameters of a waxy crude oil pipeline. Background technique [0002] Most of the crude oil produced in my country is waxy crude oil, which has a high freezing point and high viscosity. During the operation of the pipeline, due to factors such as planned maintenance or emergency repairs, it is inevitable to encounter various shutdown problems. After the pipeline shutdown, the oil temperature in the pipeline continues to drop. The precipitation of wax will lead to a significant increase in viscosity and poor fluidity. If the stoppage time is too long, when the amount of wax precipitation reaches a certain level, the fluidity will be completely lost, and the crude oil will gel and become a condensation pipe. The condensation pipe is the crude oil transportation The worst accident in engineering. Due to the complexity...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for determining the operating parameters of a waxy crude oil pipeline, which solves the problem in the prior art that the operation safety of the entire pipeline cannot be balanced due to the different failure probabilities between stations (that is, pipelines between heating stations). technical issues of sex and economy

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