Experiment device for testing dynamic behaviors of pipe string in deep water

Abstract

The invention relates to an experiment device for testing dynamic behaviors of a pipe string in deep water. The device comprises a nitrogen cylinder, a nitrogen pressure reducing valve, a flow meter,a connection pipeline, a micro-pressure sensor, laser velocity measurement sensors, flexible joints, a water insulation pipe string, an acoustic Doppler flow velocity profiler, strain rosettes, a datacollection cable, a display, an ocean wave and current co-creating experiment flume, a pipe string holder, a test pipe string and a mechanical flow meter. The nitrogen cylinder generates high pressure airflow. Pressure of the high pressure airflow is reduced to required pressure through utilization of the nitrogen pressure reducing valve. The strain rosettes collect data that the high pressure airflow results in deformation of the test pipe string. The laser velocity measurement sensor collects integrated deformation of the pipe string. The micro-pressure sensor collects stress in an axial direction of the pipe string. The stress is displayed on the display. The device has the advantages that various occasion situations can be simulated, and the device is safe and reliable, is convenientfor operation and is accurate in measured data.

Description

technical field [0001] The invention is mainly applied in the technical fields of deep water hydrodynamics and natural gas exploitation, and is an experimental device for testing the dynamic behavior of pipe strings in deep water. Background technique [0002] When high-pressure gas flows through the string of a high-pressure gas well, the flow rate and pressure are constantly changing, and the operation is started frequently, the string will be affected by the air flow to a certain extent, and in severe cases, a large amount of deformation will occur. The contact will generate certain friction, which will affect the normal work. Therefore, under the action of this dynamic load, it is necessary to conduct in-depth research on the vibration of the pipe string. In the process of oil and gas exploitation, the present invention simulates the deformation of the test pipe string, collects the deformation of the test pipe through the laser speed measuring sensor and displays it on ...

AI Technical Summary

Problems solved by technology

[0002] When high-pressure gas flows through the string of a high-pressure gas well, the flow rate and pressure are constantly changing, and the operation is started frequently, the string will be affected by the air flow to a certain extent, and in severe cases, a large amount of deformation will occur. The contact will produce certain friction, which will affect the normal work. Therefore, under the action of this dynamic load, it is necessary to conduct in-depth research on the vibration of the pipe string

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