Testing device and testing method for determining friction resistance coefficient of high-speed gas flow

Abstract

The invention discloses a testing device and testing method for determining a friction resistance coefficient of high-speed gas flow. On the basis of determining gas flow, pressure, temperature, density, pipe column geometric/mechanical parameters in an injection and production pipe column, a gas-wall friction resistance coefficient is solved; a high-speed gas injection and production working state can be simulated in a peak regulation process of a gas storage well, so that the blank that the friction resistance coefficient of an inner wall cannot be accurately detected under a high-speed injection and production working condition of an existing injection and production pipe column is filled and the testing device and the testing method can be used for designing the injection and production pipe column of a gas storage and carrying out optimization analysis on selected materials; the friction resistance coefficient of the inner wall of the pipe column is determined through detecting information including temperature, flow, pressure, axial strain and the like of the inner wall of the pipe when the high-speed gas flow flows through the gas injection and production pipe column; a conversion algorithm of the temperature of the inner wall of the pipe, the flow, the pressure, the axial strain and the friction resistance coefficient is integrated into a data acquisition and analysis system; the testing method is simple and feasible.

Description

technical field [0001] The invention belongs to oil production engineering technology, and relates to a test device and a test method for determining the friction coefficient of high-speed airflow. Background technique [0002] The existence of frictional resistance of injection-production strings in gas storage wells has a great impact on string design and material selection. At present, the determination of frictional resistance of injection-production strings is mainly obtained by on-site estimation or simple test analogy, and the accuracy is not high. Through a large number of domestic and foreign literature and field investigations, there are few determinations and research results on the frictional resistance of injection-production strings in gas storage wells, and the research on the variation law of frictional resistance of injection-production strings based on test methods has not yet been carried out. In order to accurately predict the frictional resistance of the...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a test device and test method for determining the friction coefficient of high-speed airflow, so as to solve the problem that the friction resistance of the injection-production pipe string of the gas storage well cannot be accurately calculated. The test device can be used for high-speed airflow Accurate determination of the friction coefficient of the inner wall of the pipe string to realize the optimization of the design and material selection of the injection-production pipe string of the gas storage well

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