Research on the semi-empirical model for predicting the geometrical deformation of the sealing discs of pipeline inspection gauge

IF 6.1 1区工程技术 Q2 ENERGY & FUELS

Petroleum Science Pub Date : 2025-07-01 DOI:10.1016/j.petsci.2025.05.013

Xiao-Xiao Zhu , Hao-Kun Wang , Yi-Chen Zhang , Chun-Ming Fu , Li-Yun Lao

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引用次数: 0

Abstract

Pipeline Inspection Gauge (pig) is an important equipment for oil and gas pipelines during different stages of their operations to perform functions such as dewatering, cleaning, and inspection. Owing to the hyperelasticity, time and temperature-dependent material behaviour of the sealing disc attached on the pig, the contact between the pig and the pipeline expresses complex behaviour, leading to an uncertainty in the prediction of the pig's frictional force. Knowing the deformation of the sealing discs well is essential and can be highly meaningful for predicting the pig motion, as well as reducing the pigging risks. In this study, the geometrical deformation of the sealing discs with different sizes are investigated through experiments and numerical simulations. The effects of the four nondimensionalized parameters (interference, thickness per pipeline inner diameter, and clamping ratio) of the sealing discs on the deformation behaviour were observed and discussed, and an improved mathematical model for predicting the geometrical deformation of the sealing discs was proposed and verified. With the auxiliary angle α added in the improved mathematical model, the relative error declines to 1.87% and 3.18% respectively for predicting deformation of the sealing discs in size of 2-inch and 40-inch pig. The results of this study can help better understand the frictional force of a pig with sealing discs, as well as its motion.

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管道检测仪表密封盘几何变形预测的半经验模型研究

管道检测仪表（清管器）是油气管道在运行过程中各阶段完成脱水、清洗、检测等功能的重要设备。由于连接在清管器上的密封盘具有超弹性、随时间和温度变化的材料特性，清管器与管道之间的接触表现出复杂的特性，导致清管器摩擦力的预测存在不确定性。了解密封盘的变形非常重要，对于预测清管器的运动，降低清管器的风险具有重要意义。本文通过实验和数值模拟研究了不同尺寸密封盘的几何变形。研究了密封盘的干涉量、管道内径厚度和夹紧比等4个非量量化参数对密封盘变形行为的影响，提出了一种预测密封盘几何变形的改进数学模型，并进行了验证。在改进的数学模型中加入辅助角α后，预测2英寸和40英寸清管器密封盘变形的相对误差分别降至1.87%和3.18%。本研究的结果有助于更好地理解带密封盘的猪的摩擦力，以及它的运动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Petroleum Science 地学-地球化学与地球物理

CiteScore

7.70

自引率

16.10%

发文量

311

审稿时长

63 days

期刊介绍： Petroleum Science is the only English journal in China on petroleum science and technology that is intended for professionals engaged in petroleum science research and technical applications all over the world, as well as the managerial personnel of oil companies. It covers petroleum geology, petroleum geophysics, petroleum engineering, petrochemistry & chemical engineering, petroleum mechanics, and economic management. It aims to introduce the latest results in oil industry research in China, promote cooperation in petroleum science research between China and the rest of the world, and build a bridge for scientific communication between China and the world.