A test device considering the axial directional displacement of the pipeline under the tension of the steel catenary riser

Abstract

The invention discloses a test device of axial directional displacement of a pipeline considering the tension action of a steel catenary riser. The test device comprises a test groove, oil transportation equipment, an oil outlet pipeline, an oil return pipeline, an outlet collection device, an outlet collection device and a test oil transportation pipe. Innovatively, according to the device, hot oil can be circulated in the pipelines, at the same time, the tensile force is exerted on the pipelines, and the magnitude of the tensile force can be adjusted, so that the situation a submarine pipeline can cause the axial direction displacement under the tension action of the steel catenary riser. Therefore, the influence of different magnitudes of tensile force on the rule of axial movement of the submarine pipeline is researched. Moreover, the speed and temperature of oil entering into the submarine pipeline can be accurately controlled by the device, so that a corresponding temperature variation curve of the submarine pipeline is obtained. Therefore, the influence of different temperature variation conditions on the axial directional displacement of the submarine pipeline.

Description

technical field [0001] The invention belongs to the field of offshore oil and gas transportation engineering, and in particular relates to a test device for considering the axial direction displacement of a pipeline under the tension of a steel catenary standpipe. Background technique [0002] With the further development of my country's offshore oil and gas resources, offshore oil and gas transportation is also facing greater challenges. As the main means of oil and gas transportation, the submarine oil pipeline can be hundreds of kilometers long, and due to the limitation of water depth, it is difficult to maintain the pipeline. Once an accident occurs, it will cause economic, environmental, ecological and other losses, resulting in irreparable consequences. Therefore, in the design stage, the pipeline should be systematically studied to analyze potential safety hazards and ensure the smooth progress of production. The axial directional movement of the pipeline is a new p...

AI Technical Summary

Problems solved by technology

The actual measurement data of the submarine pipeline reveals that every kilometer of the submarine pipeline can move tens of centimeters in the axial direction during a heating and cooling process, and the axial movement of the submarine pipeline can reach several meters during the entire service period of the submarine pipeline. Excessive stress in the tee / cross or jumper pipeline, loss of tension in the catenary riser and other adverse effects

Therefore, the axial directional movement caused by the tension of the steel catenary riser under the action of temperature and pressure is a problem that must be considered in the design of deep sea pipelines

At present, due to factors such as difficult control of the oil temperature in the test, large test size, and difficult leveling of the soil surface, most scholars remain at the stage of theoretical or numerical analysis on the law of axial directional movement of pipelines.

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