With the increase of the age of the transport oil pipeline, leakages caused by corruption are often found. The public is paying more and more attention to the problems of environmental pollution and economic loss brought by leakage, so a detection…
In order to put an end to rampancy rob oil, reduce losses and protect normal work of oil management department, it is necessary to detect the occurrence of leak immediately and locate the exact leak position. For negative pressure cause by leak will…
Field-pipeline operations are more easily affected by complex environment in comparison of common long-distance pipeline. Its failures such as leakage demand to be dealt with more urgently and efficiently. This paper proposes a leakage detection…
A pipeline detection & location system with 2% resolution of the total flow was designed and widely applied in long range crude and product oil transmission pipeline in China. It responses to a leak in 3 minutes and its location precision is lower…
Since the high accuracy of the leakage detection can not be achieved at present, singularity analysis based on wavelet transform is adopted to analyze the pressure signals of the oil pipeline and then get the singularity points. To locate the…
As negative pressure wave is applied to leak detection and location of natural gas pipeline, the key is how to realize accurate measurement of propagation velocity of pressure wave and time difference. However, there exists problem of lower accuracy…
Leak detection of oil pipelines is an important issue for safe operation of pipelines, reducing oil loss and environmental pollution. A new approach based on principal component analysis (PCA) method to detect leaks of oil pipelines is proposed in…
With the development of science and technology, the Internet of things technology has been gradually applied to various fields, it has become one of hot spot after the computer, the Internet and mobile communication technology. This paper focuses on…
This work proposes a leak detection system using sonic technology, wavelet transform and neural networks to decompose and analyze pressure signals from oil pipelines in real time. The similarity between pressure and sound signals makes it possible to…
Pipelines are one of great important components for gas and petrochemical industries. Normally, they are used to transport gas by hundreds or even thousands of miles. It is a momentous task to keep the gas pipeline under safety operation. Leak…
It is well known that the work condition of pipeline, the leak included, can be identified by a pressure signal analysis. Because of the high frequency data collection and always on-line pipeline leak detection, the pressure signal brings up massive…
This paper analyzes the dynamics of U.S. lithium mining companies, the lithium industry and West Texas Intermediate (WTI) crude oil prices using a Fractional Cointegration Vector AutoRegressive model (FCVAR model) and a Continuous Wavelet Transform…
Identification of reservoir interpretation model from pressure transient signals is a well-established technique in petroleum engineering. This technique aims to detect wellbore, reservoir, and boundary models employing an efficient matching process.…
The time-frequency (TF) analysis method plays a significant role in the detection of natural gas hydrates. As a data-driven method, compressed sensing (CS) has been widely used in the TF methods due to the sparsity of the TF representation. This…
Pipeline transportation systems play an increasingly essential role in the development of the economy. An accurate location of leakage is important to reduce economic losses and maintain the safe operation of pipelines. In this article, a pipeline…
The interface distribution of two-phase flow medium, i.e. flow pattern, greatly affects the operation characteristics of two-phase flow system. For example, the flow pattern of slurry mixed liquor in petroleum and metallurgical industries transported…
The complex structure and changeable working conditions of reciprocating compressor lead to the strong noise interference of collected monitoring data, the poor universality of diagnosis model and so on. A fault diagnosis method of reciprocating…
The optical fiber distributed along the pipeline can be used to obtain vibration signal and furthermore to locate the leakage and Third-Party intervention, hence offer early warning about them. The vibration signal and the vibrating disturbance from…
It is well known that the work condition of pipeline, the leak included, can be identified by a pressure signal analysis. Because of the high frequency data collection and always on-line pipeline leak detection, the pressure signal brings up massive…
A pipeline detection & location system with 2% resolution of the total flow was designed and widely applied in long range crude and product oil transmission pipeline in China. It responses to a leak in 3 minutes and its location precision is lower…
This paper analyzes the dynamics of U.S. lithium mining companies, the lithium industry and West Texas Intermediate (WTI) crude oil prices using a Fractional Cointegration Vector AutoRegressive model (FCVAR model) and a Continuous Wavelet Transform…
The energy market is extremely vulnerable to the uncertainty caused by the pandemic and leads to global lockdowns and stagnant economic activity. This study is important because energy prices (EPs) experience a dramatic decline due to the pandemic,…
The voltage source converter (VSC) multi-terminal high voltage direct current (MTHVDC) is a suitable solution to connect offshore large renewable power stations. However, relevant fast and intelligent fault current location techniques are of utmost…
Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided…
Pipelines are one of great important components for gas and petrochemical industries. Normally, they are used to transport gas by hundreds or even thousands of miles. It is a momentous task to keep the gas pipeline under safety operation. Leak…
This work proposes a leak detection system using sonic technology, wavelet transform and neural networks to decompose and analyze pressure signals from oil pipelines in real time. The similarity between pressure and sound signals makes it possible to…
In this paper, is presented the general approach of both thickness gauging and stress magnitude testing over a long distance of the pipeline by ultrasonic guided waves with increased precision and reliable results. We increase the precision by dint…
The magnetic flux leakage (MFL) method has established itself as the most widely used in-line inspection technique for the evaluation of gas and oil pipelines. The MFL data obtained from seamless pipeline inspection is usually contaminated by the…
A novel noninvasive approach to the on-line flow regime identification for wet gas flow in a horizontally mounted pipeline is proposed in this paper. Research into the flow-induced vibration response for the wet gas flow with the conditions of pipe…
In order to identify oil pipeline work conditions accurately and quickly, fuzzy C-means algorithm method is applied to this paper. For obtaining clustering standard, sixteen groups of raw data, which include each work condition, are selected from…
The test system of stress wave signal about stealing oil was briefly introduced. And basic principle of lifting scheme was presented. According to test data, the characteristics of stealing oil were analyzed in time and frequency domains. Stealing…
In this paper, a novel and effective NDT method named intense magnetic memory (IMM) was introduced to inspect transmission pipeline, which can provide early indications of residual stress status and eventual failure in pipeline. An experimental…
Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided…
The key to carry out real-time monitoring of stealing oil events is the effective identification of stealing oil stress wave signal. The test system of stress wave signal about stealing oil was briefly introduced, and on-the-spot data collection…
The principle of ultrasonic detection and the detection method of the flaw signal are described. Wavelet neural network is used for signal processing of ultrasonic detection. This method that makes full use of characteristic of self-learning for…
The optical fiber distributed along the pipeline can be used to obtain vibration signal and furthermore to locate the leakage and Third-Party intervention, hence offer early warning about them. The vibration signal and the vibrating disturbance from…
Leak detection of oil pipelines is an important issue for safe operation of pipelines, reducing oil loss and environmental pollution. A new approach based on principal component analysis (PCA) method to detect leaks of oil pipelines is proposed in…
Due to its great convenience for inspection of pipelines under special conditions, leakage localization with a single acoustic emission (AE) sensor has attracted increasing attention. However, the reported study achieves a good accuracy of leakage…
With the increase of the age of the transport oil pipeline, leakages caused by corruption are often found. The public is paying more and more attention to the problems of environmental pollution and economic loss brought by leakage, so a detection…
The long-distance pipeline leakage signal is disturbed by the outside world and the signal-to-noise ratio is low. It needs to deal with the leaking signal to improve the detection precision of pipeline leakage. In this paper, the advantages and…
As negative pressure wave is applied to leak detection and location of natural gas pipeline, the key is how to realize accurate measurement of propagation velocity of pressure wave and time difference. However, there exists problem of lower accuracy…
This paper investigates the wavelet transform and the principle and method of the noise reduction based on wavelet transform, chooses the threshold noise reduction, and discusses detailed the principles, features and design steps of the threshold…
Since the high accuracy of the leakage detection can not be achieved at present, singularity analysis based on wavelet transform is adopted to analyze the pressure signals of the oil pipeline and then get the singularity points. To locate the…
With regards to the characteristics of work conditions on oil pipeline, such as complicated changes, lack of prior knowledge and difficult classification, simulated annealing K-means clustering algorithm are proposed. Samples, which include various…
It is well known that the work condition of pipeline, the leak included, can be identified by a pressure signal analysis. Because of the high frequency data collection and always on-line pipeline leak detection, the pressure signal brings up massive…
Field-pipeline operations are more easily affected by complex environment in comparison of common long-distance pipeline. Its failures such as leakage demand to be dealt with more urgently and efficiently. This paper proposes a leakage detection…
A pipeline detection & location system with 2% resolution of the total flow was designed and widely applied in long range crude and product oil transmission pipeline in China. It responses to a leak in 3 minutes and its location precision is lower…
In detection and localization of leakage from pipeline, as the signal of pressure is usually mixed with noise, the singularity of the negative pressure wave generated by a small leakage can not be accurately extracted by using conventional methods…
Development of time and frequency domain feature extraction techniques and wavelet transform methods to detect scale deposits in petroleum pipelines from top-side ultrasonic measurements are presented. The potential of ultrasonic imaging for pipeline…
Oil pipeline could be clogged by congealed oil products, due to low temperature. Thus, the distinct pressure difference around the plugged pipe section can be used to detect pipeline clogging, and the decompression wave of water hammer is put forward…