Acoustic method of high-pressure natural gas pipelines leakage detection: Numerical and applications

2021 ◽  
pp. 104540
Author(s):  
Jia Zhang ◽  
Zhanghua Lian ◽  
Zhaoming Zhou ◽  
Ming Xiong ◽  
Mingming Lian ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Acoustic Method ◽  
Leakage Detection ◽  
Gas Pipelines ◽  
Natural Gas Pipelines

Risk Management at TransCanada Pipelines

1998 ◽  
Author(s):  
Kevin Cicansky ◽  
Glenn Yuen
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
High Pressure ◽  
Natural Gas ◽  
Assessment Model ◽  
Risk Assessment Model ◽  
Gas Pipelines ◽  
Natural Gas Pipelines

This Paper presents the method TransCanada PipeLines uses to assess the integrity risks with respect to operating its high pressure natural gas pipelines. TransCanada PipeLines’ experiences, results and successes gained through the implementation of its risk program, TRPRAM (TransCanada Pipelines Risk Assessment Model) are highlighted.

scholarly journals An EKF-Based Method and Experimental Study for Small Leakage Detection and Location in Natural Gas Pipelines

2019 ◽  
Vol 9 (15) ◽  
pp. 3193
Author(s):  
Hou ◽  
Zhu
Keyword(s):  
Natural Gas ◽  
Discrete Model ◽  
Leakage Rate ◽  
Characteristic Line ◽  
Leakage Detection ◽  
State Variables ◽  
Gas Pipelines ◽  
Natural Gas Pipelines ◽  
System Noise ◽  
Natural Gas Pipeline

Small leaks in natural gas pipelines are hard to detect, and there are few studies on this problem in the literature. In this paper, a method based on the extended Kalman filter (EKF) is proposed to detect and locate small leaks in natural gas pipelines. First, the method of a characteristic line is used to establish a discrete model of transient pipeline flow. At the same time, according to the basic idea of EKF, a leakage rate is distributed to each segment of the discrete model to obtain a model with virtual multi-point leakage. As such, the virtual leakage rate becomes a component of the state variables in the model. Secondly, system noise and measurement noise are considered, and the optimal hydraulic factors such as leakage rate are estimated using EKF. Finally, by using the idea of an equivalent pipeline, the actual leakage rate is calculated and the location of leakage on the pipeline is assessed. Simulation and experimental results show that this method can consistently predict the leakage rate and location and is sensitive to small leakages in a natural gas pipeline.

scholarly journals Mechanical Development of a NPS 36 Speed Controlled Pipeline Corrosion Measurement Tool

1998 ◽  
Author(s):  
Robert S. Evenson ◽  
Scott K. Jacobs
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Large Diameter ◽  
Speed Control ◽  
Measurement Tool ◽  
Gas Pipelines ◽  
Natural Gas Pipelines ◽  
Natural Gas Pipeline ◽  
System A ◽  
Flux Leakage

High pressure natural gas pipeline companies conducting in-line magnetic flux leakage (MFL) corrosion inspection operations had to significantly reduce gas throughput velocity to accommodate MFL corrosion tool inspection speeds. A large bypass, variable speed NPS 36 MFL corrosion inspection tool has been developed and run successfully in several high pressure natural gas pipelines without noticeable impact on operational throughput Active speed control enables the tool to run at speeds significantly lower than line velocity commonly experienced in high pressure natural gas pipelines. Unique mechanical innovations include large diameter flow bypass, an efficient speed control mechanism, variable drag backing bars and an independent bypass override system. A floating backing bar system ensures uniform sensor/wall contact for optimum data collection. Magnetic self-levitation of the backing bar results in reduced load on suspension and wheels providing more reliability and longer life to these components. Operating in higher line velocities infers higher possible tool speeds. This potential required development and construction of a more durable tool capable of higher speeds than typical MFL corrosion inspection tools. In this paper, development, testing and field operation of this tool is described.

Use of Terahertz Waves To Monitor Moisture Content in High-Pressure Natural Gas Pipelines

2019 ◽  
Vol 33 (9) ◽  
pp. 8026-8031 ◽  
Author(s):  
Shuting Fan ◽  
Kwanghee Jeong ◽  
Vincent P. Wallace ◽  
Zachary Aman
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Moisture Content ◽  
Gas Pipelines ◽  
Terahertz Waves ◽  
Natural Gas Pipelines

Validation of 1D flow model for high pressure offshore natural gas pipelines

2014 ◽  
Vol 16 ◽  
pp. 44-56 ◽  
Author(s):  
Jan Fredrik Helgaker ◽  
Antonie Oosterkamp ◽  
Leif Idar Langelandsvik ◽  
Tor Ytrehus
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Flow Model ◽  
Gas Pipelines ◽  
Natural Gas Pipelines
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