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Experimental device for interaction between three-dimensional steel catenary riser and soil

A technology of steel catenary and experimental device, which is applied in the direction of measuring device, soil material test, material inspection product, etc., can solve the problems that the overall design and analysis cannot be used, and the actual riser engineering cannot be reflected, so as to promote theoretical research and Numerical analysis to ensure the effect of safe and reliable application

Active Publication Date: 2014-02-12
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the existing standpipe fatigue test device only tests the standpipe in one direction, cannot reflect the engineering practice of the standpipe, and the test results obtained by the test cannot be used to guide the overall design and analysis of the standpipe , providing an experimental setup for the interaction between a three-dimensional steel catenary riser and soil

Method used

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  • Experimental device for interaction between three-dimensional steel catenary riser and soil
  • Experimental device for interaction between three-dimensional steel catenary riser and soil
  • Experimental device for interaction between three-dimensional steel catenary riser and soil

Examples

Experimental program
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Effect test

example 1

[0027] Example 1: An experimental setup for the interaction between a three-dimensional steel catenary riser and soil, such as figure 1 , Figure 7 As shown, it includes soil box 2, fixed clip 1, connecting rod 24, universal rotating shaft 15, three-dimensional moving mechanism 10, data acquisition unit, computer 37 and servo motor 39, wherein, the data acquisition unit includes: laser data collector; The acquisition unit also includes: a strain sensor 36 for measuring the bending moment of the test tube, a soil consolidation LVDT displacement sensor for monitoring the soil consolidation, a test tube positive settlement LVDT displacement sensor for monitoring the positive settlement of the test tube, and a sensor for monitoring the lateral settlement of the test tube. Test tube lateral settlement LVDT displacement sensor, ring soil penetration tester to measure changes in soil strength near the trench and two lasers to monitor trench dimensions during test tube movement; data ...

example 2

[0040] Example 2: Figure 8 As shown, example 2 is to change the cavity of the soil box in example 1 into upper and lower sections, and other structures are the same as example 1. Specifically, the cavity of the soil box comprises an upper segment cavity 43 and a lower segment cavity 44, the lower segment cavity is a cube-shaped cavity, the upper segment cavity is a cylindrical cavity, and the side length of the lower segment cavity is greater than the diameter of the upper segment cavity, The bottom end of the fixing clip is at the junction of the upper inner cavity and the lower inner cavity, and the claws are covered on the inner wall of the entire lower inner cavity. A motor is installed on the upper inner cavity, and a propeller is installed on the motor shaft, which is driven by the motor. The propeller rotates, and the propeller drives the water in the upper cavity to rotate or reverse, so that the water in the soil box can truly simulate the movement state of seawater ...

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Abstract

The invention discloses an experimental device for interaction between a steel catenary riser and soil. According to the experimental device, by researching movements in the transverse, longitudinal and vertical directions of a test tube, the test tube is closer to engineering practice and is used for acquiring experimental data, so that an experimental data analysis result obtained by a three-dimensional experiment can preferably promote the theoretical research and numerical analysis so as to guide the integral design and analysis of the riser and guarantee the safe and reliable application of the riser in deepwater oil and gas exploitation. The experimental device comprises a soil box, the test tube, a computer, a servo motor and a data acquisition unit, wherein the data acquisition unit comprises a laser data acquisition unit, the soil in a certain thickness is paved at the bottom in the soil box, the test tube is horizontally paved at the upper surface of the soil, one end of the test tube is fixedly arranged on the inner wall of the soil box, the other end of the test tube is connected to a three-dimensional moving machine, and a three-dimensional coordinate track path acquisition mechanism is arranged on the test tube. The experimental device is mainly applied to a design technique of a deepwater steel catenary riser.

Description

technical field [0001] The invention relates to the technical field of deep-water steel catenary risers, in particular to an experimental device for the interaction between a three-dimensional steel catenary riser and soil. Background technique [0002] As the main artery of offshore oil and gas production, the riser system plays a pivotal role in the development of offshore oil and gas resources. With the support of water depth, the invention of deep-water steel catenary riser (Steel Catenary Riser, SCR) has gradually shown unique advantages in cost control, applicable water depth and adaptability, and has replaced traditional risers. The efficient riser solution, as a system connecting offshore floating devices and subsea pipelines, is widely used in various water depth development projects. [0003] Aiming at the contact point area of ​​the deepwater steel catenary riser (Steel Catenary Riser, SCR), the pipe-soil interaction prototype test is costly and difficult to obse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/24
Inventor 白兴兰姚锐陈晶晶
Owner ZHEJIANG OCEAN UNIV
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