Idris Ismail | Universiti Teknologi PETRONAS (original) (raw)

Papers by Idris Ismail

AIP Conference Proceedings, 2007

Measurement of Water Fraction in Liquid Hydro‐Carbons Using ECT Sensor. [AIP Conference Proceedin... more Measurement of Water Fraction in Liquid Hydro‐Carbons Using ECT Sensor. [AIP Conference Proceedings 914, 705 (2007)]. Syed Faisal Ahmed Bukhari, Idris Ismail, Wuqiang Yang. Abstract. In the oil industry, it is important to ...

2015 European Control Conference (ECC), 2015

Page 1. i KEBERKESANAN KAEDAH HAFAZAN DI PUSAT TAHFIZ PENYELIDIK-PENYELIDIK: USTAZ ABDUL HAFIZ BI... more Page 1. i KEBERKESANAN KAEDAH HAFAZAN DI PUSAT TAHFIZ PENYELIDIK-PENYELIDIK: USTAZ ABDUL HAFIZ BIN HAJI ABDULLAH PROF. MADYA AJMAIN BIN SAFAR USTAZ MOHD ISMAIL BIN MUSTARI USTAZ AZHAR BIN MUHAMMAD USTAZ IDRIS BIN ISMAIL ...

Measurement Science and Technology, 2015

Tomographic analysis of the behavior of waxy crude oil in pipelines is important to permit approp... more Tomographic analysis of the behavior of waxy crude oil in pipelines is important to permit appropriate corrective actions to be taken to remediate the wax deposit layer before pipelines are entirely plugged. In this study, a non-invasive/non-intrusive electrical capacitance tomography (ECT) system has been applied to provide real-time visualization of the formation of paraffin waxes and to measure the amount of wax fraction from the Malay Basin waxy crude oil sample under the static condition. Analogous expressions to estimate the wax fraction of the waxy crude oil across the temperatures range of 30–50 °C was obtained by using Otsu’s and Kuo’s threshold lgorithms. Otsu’s method suggested that the wax fraction can be estimated by the correlation coefficient =0.0459T3−5.3535T2+200.36T−2353.7 while Kuo’s method provides a similar correlation with =0.0741T3−8.4915T2+314.96T−3721.2. These correlations show good agreements with the results which are obtained from the conventional weighting method. This study suggested that Kuo’s threshold algorithm is more promising when integrated into the ECT system compared to Otsu’s algorithm because the former provides higher accuracy wax fraction measurement results below the wax appearance temperature for waxy crude oil.This study is significant because it serves as a preliminary investigation for the application of ECT in the oil and gas industry for online measurement and detection of wax fraction without causing disturbance to the process flow.

2010 International Conference on Intelligent and Advanced Systems, 2010

2015 10th Asian Control Conference (ASCC), 2015

2012 IEEE Control and System Graduate Research Colloquium, 2012

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT The reliability and availability of the metering system plays a crucial part in the gas ... more ABSTRACT The reliability and availability of the metering system plays a crucial part in the gas transportation system because it affects the billing integrity between the gas supplier and their customers. A slight error in measurement will lead to significant monetary impact. Therefore, the challenge lies in building an online verification system that is able to check the accuracy of instruments in the metering system as well as to enable the verification system to reconstruct data in the case of faults on the instruments during operation time. This paper proposes hypotheses as well as a research plan to deal with these problems. The proposed idea invests in the behavior and relation among instruments based on empirical models, particularly Neural Network. Based on this model, the faults of instrument will be detected and unreliable data will be corrected.

Applied Mechanics and Materials, 2014

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT This research work is mainly focused on modeling and simulation of Electrical Capacitanc... more ABSTRACT This research work is mainly focused on modeling and simulation of Electrical Capacitance Tomography (ECT) sensor which comprises of 12 electrodes that are fabricated externally. The arrangement of electrodes is in the form of multi-plane (i.e. single and twin-plane electrodes). The Finite Element Method (FEM) can be utilized to simulate and compute capacitance values. This simulation method can provide sensitivity distribution and also helpful in obtaining the permittivity distribution for multi-phase flow. This paper focuses on the need for field simulation in the design and analysis of multi-electrode capacitance sensors for tomographic flow imaging. However, the real sensors are 3D but mostly a cross-section is modeled in 2D. The governing equations and the modeling approach for 2D single- and twin-plane ECT sensor using Electromagnetic Module of COMSOL Multiphysics are discussed in this manuscript. The single- and twin-plane simulation has been done for velocity and volume measurement respectively. An image reconstruction algorithm for ECT have presented in this work is based on the FEM. Simulation results are duly verified by an experimental data that has been obtained from the calculation of gas-oil two-phase flow.

2012 4th International Conference on Intelligent and Advanced Systems (ICIAS2012), 2012

ABSTRACT Electrical Capacitance Tomography (ECT) is a non-intrusive type of Process Tomography, w... more ABSTRACT Electrical Capacitance Tomography (ECT) is a non-intrusive type of Process Tomography, which is used for obtaining information about the distribution of the contents of closed pipes by measuring variations in the dielectric properties of the material inside the vessel. In process industries, the measurement of void fraction is considerably important for sustainable operations. The erroneous calculation of void fraction is inevitably be the cause of many industrial accidents such as sweet corrosions in sub-sea oil and gas pipelines and an inefficient process control of chemical plants. The customary approach separates the two-phases first and then measures the mixture as individual components that results in the disruption of incessant industrial processes. Due to these limitations, this study is aimed to analyze a non-invasive, experimental study by using Electrical Capacitance Tomography (ECT) and differential pressure (ΔP) technique on a flow loop. This paper presents the measurements of void fraction obtained from ECT and ΔP using air and deionized water. Based on these measurements, the future work is to apply these techniques on the waxy crude in order to determine the void fraction. The estimation of void fraction in a bubble column via ECT and ΔP shows the influence of superficial gas velocity on void fraction as a linear function. The outcome of the study could also be used to fully understand the phenomenon of void fraction in waxy crude based on varying the temperature and pressure.

2010 International Conference on Intelligent and Advanced Systems, 2010

2010 Fourth Asia International Conference on Mathematical/Analytical Modelling and Computer Simulation, 2010

Abstract— This experimental study uses Electrical Capacitance Tomography (ECT) technique for meas... more Abstract— This experimental study uses Electrical Capacitance Tomography (ECT) technique for measuring the void fraction in two phase bubble flow regime. Void fraction was measured by using differential pressure calculations in a vertical fluid column (ECT sensor) with ...

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT This paper presents a new approach to deal with the nonlinearity of control system by us... more ABSTRACT This paper presents a new approach to deal with the nonlinearity of control system by using Multi Model Predictive Control (MPC) strategies. The idea of this research is using Fuzzy model to divide the nonlinear system into several sub linear systems which can be applied linear MPC controller. Firstly, the structure of Takagi-Sugeno (T-S) Fuzzy model is developed and optimized using Subtractive Clustering method. Then the obtained T-S Fuzzy model is trained using Adaptive-Network Based Fuzzy System (ANFIS) to derive optimal the parameters of models. Since the obtained T-S Fuzzy model is described in number of rules (local model) which present linear relationship between outputs and inputs so that a number of linear MPC controller is designed for each local model. The global control signal is combined from control signal of each local MPC controller by parallel distributed compensation technique. The proposed multi MPC scheme applying for CSTR nonlinear process shows that Multi Model Predictive Control based on T-S Fuzzy model can improve the performance of conventional MPC in nonlinear control system.

Chemical Engineering Science, 2005

Research and Development, 2002. …, 2002

Abstract-this paper presents a study of the approaches taken to model and simulate power systems ... more Abstract-this paper presents a study of the approaches taken to model and simulate power systems of an industrial plant. Even the best-designed electric systems occasionally experience short-circuits resulting in abnormally high currents. To predict the behavior of these short ...

Student Conference on Research and Development, 2002

AIP Conference Proceedings, 2007

Measurement of Water Fraction in Liquid Hydro‐Carbons Using ECT Sensor. [AIP Conference Proceedin... more Measurement of Water Fraction in Liquid Hydro‐Carbons Using ECT Sensor. [AIP Conference Proceedings 914, 705 (2007)]. Syed Faisal Ahmed Bukhari, Idris Ismail, Wuqiang Yang. Abstract. In the oil industry, it is important to ...

2015 European Control Conference (ECC), 2015

Page 1. i KEBERKESANAN KAEDAH HAFAZAN DI PUSAT TAHFIZ PENYELIDIK-PENYELIDIK: USTAZ ABDUL HAFIZ BI... more Page 1. i KEBERKESANAN KAEDAH HAFAZAN DI PUSAT TAHFIZ PENYELIDIK-PENYELIDIK: USTAZ ABDUL HAFIZ BIN HAJI ABDULLAH PROF. MADYA AJMAIN BIN SAFAR USTAZ MOHD ISMAIL BIN MUSTARI USTAZ AZHAR BIN MUHAMMAD USTAZ IDRIS BIN ISMAIL ...

Measurement Science and Technology, 2015

Tomographic analysis of the behavior of waxy crude oil in pipelines is important to permit approp... more Tomographic analysis of the behavior of waxy crude oil in pipelines is important to permit appropriate corrective actions to be taken to remediate the wax deposit layer before pipelines are entirely plugged. In this study, a non-invasive/non-intrusive electrical capacitance tomography (ECT) system has been applied to provide real-time visualization of the formation of paraffin waxes and to measure the amount of wax fraction from the Malay Basin waxy crude oil sample under the static condition. Analogous expressions to estimate the wax fraction of the waxy crude oil across the temperatures range of 30–50 °C was obtained by using Otsu’s and Kuo’s threshold lgorithms. Otsu’s method suggested that the wax fraction can be estimated by the correlation coefficient =0.0459T3−5.3535T2+200.36T−2353.7 while Kuo’s method provides a similar correlation with =0.0741T3−8.4915T2+314.96T−3721.2. These correlations show good agreements with the results which are obtained from the conventional weighting method. This study suggested that Kuo’s threshold algorithm is more promising when integrated into the ECT system compared to Otsu’s algorithm because the former provides higher accuracy wax fraction measurement results below the wax appearance temperature for waxy crude oil.This study is significant because it serves as a preliminary investigation for the application of ECT in the oil and gas industry for online measurement and detection of wax fraction without causing disturbance to the process flow.

2010 International Conference on Intelligent and Advanced Systems, 2010

2015 10th Asian Control Conference (ASCC), 2015

2012 IEEE Control and System Graduate Research Colloquium, 2012

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT The reliability and availability of the metering system plays a crucial part in the gas ... more ABSTRACT The reliability and availability of the metering system plays a crucial part in the gas transportation system because it affects the billing integrity between the gas supplier and their customers. A slight error in measurement will lead to significant monetary impact. Therefore, the challenge lies in building an online verification system that is able to check the accuracy of instruments in the metering system as well as to enable the verification system to reconstruct data in the case of faults on the instruments during operation time. This paper proposes hypotheses as well as a research plan to deal with these problems. The proposed idea invests in the behavior and relation among instruments based on empirical models, particularly Neural Network. Based on this model, the faults of instrument will be detected and unreliable data will be corrected.

Applied Mechanics and Materials, 2014

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT This research work is mainly focused on modeling and simulation of Electrical Capacitanc... more ABSTRACT This research work is mainly focused on modeling and simulation of Electrical Capacitance Tomography (ECT) sensor which comprises of 12 electrodes that are fabricated externally. The arrangement of electrodes is in the form of multi-plane (i.e. single and twin-plane electrodes). The Finite Element Method (FEM) can be utilized to simulate and compute capacitance values. This simulation method can provide sensitivity distribution and also helpful in obtaining the permittivity distribution for multi-phase flow. This paper focuses on the need for field simulation in the design and analysis of multi-electrode capacitance sensors for tomographic flow imaging. However, the real sensors are 3D but mostly a cross-section is modeled in 2D. The governing equations and the modeling approach for 2D single- and twin-plane ECT sensor using Electromagnetic Module of COMSOL Multiphysics are discussed in this manuscript. The single- and twin-plane simulation has been done for velocity and volume measurement respectively. An image reconstruction algorithm for ECT have presented in this work is based on the FEM. Simulation results are duly verified by an experimental data that has been obtained from the calculation of gas-oil two-phase flow.

2012 4th International Conference on Intelligent and Advanced Systems (ICIAS2012), 2012

ABSTRACT Electrical Capacitance Tomography (ECT) is a non-intrusive type of Process Tomography, w... more ABSTRACT Electrical Capacitance Tomography (ECT) is a non-intrusive type of Process Tomography, which is used for obtaining information about the distribution of the contents of closed pipes by measuring variations in the dielectric properties of the material inside the vessel. In process industries, the measurement of void fraction is considerably important for sustainable operations. The erroneous calculation of void fraction is inevitably be the cause of many industrial accidents such as sweet corrosions in sub-sea oil and gas pipelines and an inefficient process control of chemical plants. The customary approach separates the two-phases first and then measures the mixture as individual components that results in the disruption of incessant industrial processes. Due to these limitations, this study is aimed to analyze a non-invasive, experimental study by using Electrical Capacitance Tomography (ECT) and differential pressure (ΔP) technique on a flow loop. This paper presents the measurements of void fraction obtained from ECT and ΔP using air and deionized water. Based on these measurements, the future work is to apply these techniques on the waxy crude in order to determine the void fraction. The estimation of void fraction in a bubble column via ECT and ΔP shows the influence of superficial gas velocity on void fraction as a linear function. The outcome of the study could also be used to fully understand the phenomenon of void fraction in waxy crude based on varying the temperature and pressure.

2010 International Conference on Intelligent and Advanced Systems, 2010

2010 Fourth Asia International Conference on Mathematical/Analytical Modelling and Computer Simulation, 2010

Abstract— This experimental study uses Electrical Capacitance Tomography (ECT) technique for meas... more Abstract— This experimental study uses Electrical Capacitance Tomography (ECT) technique for measuring the void fraction in two phase bubble flow regime. Void fraction was measured by using differential pressure calculations in a vertical fluid column (ECT sensor) with ...

2014 5th International Conference on Intelligent and Advanced Systems (ICIAS), 2014

ABSTRACT This paper presents a new approach to deal with the nonlinearity of control system by us... more ABSTRACT This paper presents a new approach to deal with the nonlinearity of control system by using Multi Model Predictive Control (MPC) strategies. The idea of this research is using Fuzzy model to divide the nonlinear system into several sub linear systems which can be applied linear MPC controller. Firstly, the structure of Takagi-Sugeno (T-S) Fuzzy model is developed and optimized using Subtractive Clustering method. Then the obtained T-S Fuzzy model is trained using Adaptive-Network Based Fuzzy System (ANFIS) to derive optimal the parameters of models. Since the obtained T-S Fuzzy model is described in number of rules (local model) which present linear relationship between outputs and inputs so that a number of linear MPC controller is designed for each local model. The global control signal is combined from control signal of each local MPC controller by parallel distributed compensation technique. The proposed multi MPC scheme applying for CSTR nonlinear process shows that Multi Model Predictive Control based on T-S Fuzzy model can improve the performance of conventional MPC in nonlinear control system.

Chemical Engineering Science, 2005

Research and Development, 2002. …, 2002

Abstract-this paper presents a study of the approaches taken to model and simulate power systems ... more Abstract-this paper presents a study of the approaches taken to model and simulate power systems of an industrial plant. Even the best-designed electric systems occasionally experience short-circuits resulting in abnormally high currents. To predict the behavior of these short ...

Student Conference on Research and Development, 2002