A test device for studying the interference law of marine risers under the action of top tension

A test device and tension technology, which is used in the field of test devices for studying the interference law of marine risers, can solve the problems of inability to adjust and measure the size of the tension, the conclusions are not convincing, and the engineering practice cannot be well simulated.

Active Publication Date: 2018-06-19
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the current ocean riser interference tests, the engineering practice is often not well simulated, so the conclusions drawn are not convincing
The main problems in the test process are: the riser joints are mostly consolidated, not hinged; although the standpipe is in a tensioned state, the size of the top tension cannot be adjusted and measured; in the same test, there is no or very little Research on the spacing and arrangement of risers

Method used

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  • A test device for studying the interference law of marine risers under the action of top tension
  • A test device for studying the interference law of marine risers under the action of top tension
  • A test device for studying the interference law of marine risers under the action of top tension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 as figure 1 As shown, a test device for studying the interference law of marine risers under the action of top tension mainly includes a bracket 2, a riser model 5, a pulley 1 and a hinged joint; the pulley 1 is fixed on the top of the bracket 2; the hinged joint includes an upper The hinged joint 4 and the lower hinged joint 6; the lower end of the riser model 5 is connected with the lower hinged joint 6, and the upper end of the riser model 5 is connected with the upper hinged joint 5; a stud is installed on the top plate 14 of the upper hinged joint 4, and the stud The screw thread specification matches with the perforation on the top plate 14, is tightened and makes its end expose the lower bottom surface of top plate 14, then selects the nut of suitable specification to tighten again.

[0012] like figure 2 As shown, reserved holes are provided on the top of the bracket 2 and the bottom plate 7, which are longitudinal reserved holes 11 and transverse re...

Embodiment 2

[0020] Embodiment 2 The test device used to study the interference law of marine risers under the action of top tension in this embodiment is basically the same in structure as the device in embodiment 1, the only difference being that the lower hinged joint 6 does not include the top plate 14, and the top plate 14 is directly screwed The screw hole of the bearing seat I15 of the lower hinged joint is fixed together with the reserved hole on the support base plate. In this manner, the connection between the lower hinged joint and the bracket can be made more stable.

[0021] like figure 2 As shown, when using the test device of the above-mentioned embodiment 1 to carry out the research on the interference test of the marine riser, it is necessary to use the upper hinged joint 4 and the lower hinged joint 6 at both ends of the riser model, and fix the lower hinged joint 6 in the test On the bottom plate 7 of the bracket. By continuously applying a known top tension, changing...

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Abstract

The invention relates to a test device for studying the interference law of marine risers under the action of jacking force, which mainly includes a bracket, a riser model, a hinged joint and a pulley; the pulley is fixed on the top of the bracket; the hinged joint includes an upper hinged joint and a The lower articulated joint, the lower end of the riser model is connected with the lower articulated joint, and the upper end of the riser model is connected with the upper articulated joint; studs are installed on the top plate of the upper articulated joint, and it is characterized in that: the top and the bottom plate of the bracket are respectively set There is a reserved hole, the upper end of the stud passes through the reserved hole on the top of the bracket to connect the steel strand, and the steel strand bypasses the pulley to connect with the counterweight; the lower hinged joint passes through the reserved hole on the stud and the bottom plate, and is fixed on the the bottom plate of the bracket. The device can effectively realize the articulation, apply the top tension, and can simulate the actual engineering by changing the arrangement and spacing of the riser model in the test of the interference law of the marine riser, so as to obtain accurate test data and conclusions .

Description

technical field [0001] The invention belongs to the technical field of laying of marine riser facilities, and in particular relates to a test device for studying the interference law of marine risers. Background technique [0002] The offshore riser is the main connection between the offshore platform and the subsea wellhead, and is mainly used to transport fluids, guide drilling or oil well maintenance tools and pipelines into oil wells, etc. As a communication channel between the sea surface and the seabed, it can be used for fixed platforms, floating platforms and drilling ships. There are many pipelines between each offshore platform and the subsea wellhead, and generally have various layout forms, such as front-to-back arrangement, side-by-side arrangement and mutual staggered arrangement, etc. When there is flow passing through, the riser will be affected by the wake of other risers. Interference between risers occurs. Due to the existence of interference, the dynami...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
Inventor 郭海燕王飞李效民孟凡顺刘景伟李莹牛建杰赵伟殷文明
Owner OCEAN UNIV OF CHINA
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