Method for establishing drag reducer drag reduction effect evaluation and prediction model

Abstract

The invention discloses a method for establishing a drag reducer drag reduction effect evaluation and prediction model, and belongs to the technical field of oil pipeline transportation. The frictioncoefficient expression after additive adding is the drag reduction rate expression after additive adding, and the same drag reducer is applied to different pipelines. Pipe diameter correction is required. The corrected prediction model is the establishing method for establishing the drag reduction effect evaluation and prediction model of the high-molecular polymer drag reducer based on the hydraulic friction coefficient. Therefore, the use of the drag reducer has estimability, unnecessary loss and waste are avoided, the application of the drag reducer is expanded, an agent adding operation scheme can be designed in advance in pipeline transportation, and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil pipeline transportation, in particular to a method for establishing a drag reduction effect evaluation and prediction model of a drag reducer. Background technique [0002] The addition of drag reducing agent in oil pipeline transportation can significantly reduce the friction of the pipeline system, improve the pipeline transportation capacity, reduce the energy consumption of the pipeline transportation system, reduce the setting of pump stations or the number of pumps, and optimize the construction and operation of pipelines. [0003] At present, the vast majority of my country's main oil pipelines are in injection operation. Research on drag reducers in various countries is also increasing. Although the drag reducer has gradually been widely used in the pipeline transportation of different oil products. However, judging from the current application situation, the drag reducer has been used passi...

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Problems solved by technology

However, judging from the current application situation, the drag reducer has been used passively, that is, when a problem occurs, it is used to deal with the immediate difficulties; the role of the drag reducer cannot be fully considered in the design and operation management; "to determine the drag reduction effect

This is mainly due to the lack of substantive understanding and theoretical research on drag reduction, resulting in the following problems in the application of drag reduction agents: 1) There is no relevant basis to guide the use; 2) There is no more accurate prediction and evaluation method for drag reduction effect; 3) There is no A predictive method that can evaluate drag reducer performance

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