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A test method for top tension and effective tension of deep water top tension riser

A technology of effective tension, test method, applied in the field of research and test of marine deepwater riser

Inactive Publication Date: 2011-12-21
OCEAN UNIV OF CHINA
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Problems solved by technology

[0018] The purpose of the present invention is to provide a test method for the top tension and effective tension of the deep water top tension riser aiming at the defects of the existing deep water top tension riser research, and to provide the basis and test verification for the top tension and effective tension calculation of the deep water top tension riser

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  • A test method for top tension and effective tension of deep water top tension riser
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  • A test method for top tension and effective tension of deep water top tension riser

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1As shown, the top tension and effective tension test device of the deep-water top-tensioned riser comprises a bracket 12 arranged on the base 11, the base 11 is welded to the bracket 12, and the upper end of the bracket 12 is provided with a counter force frame 13, and the counter force frame 13 is connected to the bracket 12 Solder connection. The upper end of the model pipeline 1 is provided with a chuck 14, and the reaction frame 13 is connected with the chuck 14 through a spring. The chuck 14 is welded with the chuck bracket 15, the reinforcement plate 16 is welded with the chuck bracket 15, the chute 17 is welded with the chuck bracket 15 and the reinforcement plate 16, the slideway 18 is welded with the support 12, and the chute 17 can be Sliding freely on slideway 18. A spring tension gauge 21 is provided on t...

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Abstract

The invention relates to a research test method of a marine deep-water stand pipe and particularly relates to a method for testing top tension and effective tension of a deep-water top tension type stand pipe. The method comprises the following steps of: fastening the lower end of a model pipeline to an internal pressure water tank and connecting the upper end of the model pipeline to a spring tensometer, arranging an external pressure water tank outside the model pipeline, arranging strain gauges in different positions on the model pipeline, and arranging a pressure gauge for measuring the internal pressure of the pipeline; then, performing a top tension text, the effective tension test of internal pressure action, the effective tension test with both internal and external pressure actions, and the effective tension test of external pressure action. The method is capable of completing the test researches on the top tension and effective tension of the deep-water top tension type stand pipe, thereby providing a basis and a test verification for the top tension and effective tension calculation of the deep-water top tension type stand pipe.

Description

technical field [0001] The invention relates to a research and test method for marine deepwater risers, in particular to a top tension and effective tension test method for deepwater top tension risers. Background technique [0002] Deepwater top tension riser is a main type of deepwater marine riser. The lower end of the riser is connected to the wellhead on the seabed. The tension of the pipe wall directly acts on the wellhead, and the fluid in the pipe continuously flows from the seabed through the riser to the floating platform. . The top tension calculation of deep water top tension riser is the basis of design and analysis. If the design value of the top tension is too low, it may cause buckling of the riser, and if the design value of the top tension is too high, the riser may break. Moreover, the top tension is directly related to the calculation of the natural frequency of the riser. If the calculation of the top tension is inaccurate, the designed natural frequenc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/04
Inventor 黄维平吴学敏刘娟李倩魏东泽段金龙孟庆飞周阳
Owner OCEAN UNIV OF CHINA
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