A liquid-loading detection technology of wet-gas gathering pipelines based on ultrasonic echo characteristics

doi:10.7623/syxb201306023

ACTA PETROLEI SINICA ›› 2013, Vol. 34 ›› Issue (6): 1200-1205.DOI: 10.7623/syxb201306023

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A liquid-loading detection technology of wet-gas gathering pipelines based on ultrasonic echo characteristics

LI Yuhao¹, CAO Xuewen¹, LEI Yi², LIANG Fachun¹, ZHANG Yuhang³

1. College of Pipeline & Civil Engineering, China University of Petroleum, Qingdao 266580, China;
2. College of Mechanical & Electronic Engineering, China University of Petroleum, Qingdao 266580, China;
3. Southwest Company, China Petroleum Engineering Co. Ltd., Chengdu 610041, China

Received:2013-05-22 Revised:2013-09-01 Online:2013-11-25 Published:2013-10-13

基于超声回波特性的湿气集输管线积液检测技术

李玉浩¹, 曹学文¹, 雷毅², 梁法春¹, 张宇航³

1. 中国石油大学储运与建筑工程学院山东青岛 266580;
2. 中国石油大学机电工程学院山东青岛 266580;
3. 中国石油集团工程设计有限责任公司西南分公司四川成都 610041

通讯作者: 曹学文，男，1966年2月生，1986年获华东石油学院石油储运专业学士学位，2006年获西安交通大学动力工程及工程热物理专业博士学位，现为中国石油大学（华东）储运与建筑工程学院油气储运工程系教授、博士生导师，主要从事多相流及油气田集输技术与海底管道完整性管理方面的研究。Email：caoxw2004@163.com
作者简介:李玉浩，男，1985年10月生，2007年获中国石油大学（华东）油气储运工程专业学士学位，现为中国石油大学（华东）油气储运工程专业博士研究生，主要从事高含硫湿气集输管线工艺方面的研究。Email：liyuhao2003@163.com
基金资助:
国家重大科技专项（2011ZX05017-004）、国家自然科学基金项目（No.51006123）和山东省自然科学基金项目（ZR2010EQ016）资助。

Abstract

Abstract:

A non-intrusive detection method was proposed for the liquid-loading diagnosis in wet-gas pipelines, with which an accurately quantitative analysis could be conducted through numerical simulation. Since ultrasonic penetration at a liquid-solid interface is higher than a gas-solid one, a faster attenuation of residual ultrasonic waves inside a pipeline wall will occur. Thus, a difference in ultrasonic echo characteristics between the case of the gas-solid interface and that of the liquid-solid interface is evident. Moreover, along with the echoing frequency increases, the difference between them becomes more obvious. Based on this point of view, the fifth echo signal was selected as a basis to analyze characteristics of gas-solid or liquid-solid interfaces. The experimental investigation was carried out to detect the liquid loading of wet-gas transportation pipelines in the Puguang gasfield and the results showed that a gas-liquid interface can be detected accurately with the measurement precision of ±3 mm, which agrees fairly well with the actual liquid loading. Therefore, this method proved simple and high in accuracy and reliability besides being free of the damage to pipeline structures and unaffected by temperature and pressure of pipelines.

Key words: gathering pipeline, ultrasonic echo, gas-liquid interface, detection technology, pipeline pigging

摘要：

针对目前高含硫湿气集输管线中积液严重的现状，对气-固界面和液-固界面的超声回波特性进行了研究，提出了一种非介入式管线积液检测方法，通过数值模拟可准确实现定量分析。超声波在气-固界面和液-固界面的超声回波特性差异明显，随着反射回波次数的增大，两种界面回波特性差异越来越显著，选取第5次回波信号作为界面特性判断依据。实验表明：利用超声波可以准确地检测到管线内的气-液界面，测量精度可达±3 mm；该检测方法应用简单、不破坏管道结构，不受管内温度、压力的影响，检测结果准确可靠，可为工艺运行和管线清管提供依据。

关键词: 集输管线, 超声回波, 气-液界面, 检测技术, 管线清管

CLC Number:

TE973.6

LI Yuhao, CAO Xuewen, LEI Yi, LIANG Fachun, ZHANG Yuhang. A liquid-loading detection technology of wet-gas gathering pipelines based on ultrasonic echo characteristics[J]. ACTA PETROLEI SINICA, 2013, 34(6): 1200-1205.

李玉浩, 曹学文, 雷毅, 梁法春, 张宇航. 基于超声回波特性的湿气集输管线积液检测技术[J]. 石油学报, 2013, 34(6): 1200-1205.

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A liquid-loading detection technology of wet-gas gathering pipelines based on ultrasonic echo characteristics

基于超声回波特性的湿气集输管线积液检测技术

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