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

A technology for predicting models and establishing methods, which is applied in CAD numerical modeling, electrical digital data processing, design optimization/simulation, etc., and can solve the problem of no relevant basis, no prediction method of drag reducing agent performance, and no prediction and evaluation of drag reducing effect Methods and other issues

Inactive Publication Date: 2020-05-22
XI'AN PETROLEUM UNIVERSITY
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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 sub...

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

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Embodiment 1

[0068] The hydraulic friction coefficient is a physical quantity that characterizes the flow resistance. After the drag reducer is injected into the pipe flow, the frictional resistance and frictional coefficient will decrease to varying degrees along the way. After the drag reducer is injected, the long chain of molecules interacts with the turbulent fluid, which reduces the additional stress of the turbulent flow, weakens the turbulent pulsation, suppresses the generation of turbulent vortices, and reduces the frictional resistance along the way, such as figure 1 shown. In order to quantify the relationship between the amount of friction coefficient change and the basic parameters of the pipeline, the concentration of the injected drag reducer, the Reynolds number Re and other factors after injecting a certain drag reducer in the pipe flow, the present invention establishes the friction coefficient after adding the agent Coefficient calculation model.

[0069] Through the ...

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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...

Claims

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Application Information

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IPC IPC(8): G06F30/28G06F111/10G06F119/14
Inventor 全青王寿喜石营
Owner XI'AN PETROLEUM UNIVERSITY
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