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

Abstract

The embodiment of the present invention provides a method and device for determining the operating parameters of a waxy crude oil pipeline, wherein the method includes: preset the standard failure probability of the pipeline between heating stations, and the standard failure probability makes the pipeline between the heating stations condensate during operation The probability of the accident is less than the first preset value and the power of the heating furnace in the heating station is less than the second preset value; determine the initial value of the operating parameter and the initial value of the environmental parameter of the pipeline between each heating station; according to the initial value of the determined operating parameter value and the initial value of the environmental parameters, and calculate the initial failure probability of the pipeline between each heating station; according to the relationship between the initial failure probability of the pipeline between each heating station and the standard failure probability, adjust the operating parameters of the pipeline between each heating station value, the absolute value of the difference between the failure probability calculated according to the adjusted value of the operating parameter and the initial value of the environmental parameter and the standard failure probability is smaller than the third preset value. The embodiment of the present invention can balance the operation safety and economy of the entire pipeline.

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

Images