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Ali Faraj

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C. Michael Hall

University of Canterbury/Te Whare Wānanga o Waitaha

Kansas State University

University of Notre Dame

Joël Chandelier

University of Lausanne

Università degli studi di Pavia

Gran Sasso Science Institute

Silvia Di Vincenzo

Centre National de la Recherche Scientifique / French National Centre for Scientific Research

The University of Sydney

حميد حميد

University of East London

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Papers by Ali Faraj

Variation of Total Stresses During Field Operation Using Finite Element Technique, Zubair Oil Field

Iraqi Journal of Oil and Gas Research (IJOGR)

The Zubair oil field is predominantly plagued by geomechanical issues, which can result in signif... more The Zubair oil field is predominantly plagued by geomechanical issues, which can result in significant non-productive time. The aim of this study is to present a reservoir model and a geomechanical model utilizing the finite element method. The intriguing data consisting of logs, calibration data, drilling reports, and mud reports were utilized to construct one-dimensional models (1D) for each well using Techlog 2015 software. Furthermore, the 3D geomechanical model was built utilizing Petrel 2017 software, while the finite element technique was implemented using the CMG 2018 program to predict the total stress states during production or injection operations in the field over a span of 10 years.The analysis results of all mechanical rock properties in the 3D geomechanical model revealed that Shuaiba and Al-Hammar domes were insufficient for maintaining stable wells, particularly in the Tanuma formation. However, the Mishrif formation displayed higher stability despite production. Furthermore, the 3D finite element model exhibited that the total horizontal stress decreased during production and increased in injection wells. This variation would result in an increase in the effective horizontal stress during production and a decrease in injection wells. Moreover, the effective vertical stress increased during production and decreased during injection wells. Based on these outcomes, it can be concluded that production could trigger an increase in the differential stress leading to rock shear failure, whereas in injection cases, pore pressure increased, and this caused tensile failure.

Application of Finite Element Technique: A Review Study

Iraqi Journal of Chemical and Petroleum Engineering

The finite element approach is used to solve a variety of difficulties, including well bore stabi... more The finite element approach is used to solve a variety of difficulties, including well bore stability, fluid flow production and injection wells, mechanical issues and others. Geomechanics is a term that includes a number of important aspects in the petroleum industry, such as studying the changes that can be occur in oil reservoirs and geological structures, and providing a picture of oil well stability during drilling. The current review study concerned about the advancements in the application of the finite element method (FEM) in the geomechanical field over a course of century. Firstly, the study presented the early advancements of this method by development the structural framework of stress, make numerical computer solution for 2D thermal stress then stress analysis of the airplane. The second part focused on the most recent developments of FEM, and this method generates new techniques for solving these problems, such as the 1D, 2D, and 3D finite element models; the dynamic p...

The book (literary criticism) for the sixth grade of the Preparatory School critical Study

ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES, 2018

On the basis of the importance of evaluating the curricula of the Arabic language in the Iraq... more On the basis of the importance of evaluating the curricula of the Arabic language in the Iraqi schools. These critical study analytical book (literary criticism) grade sixth preparatory. The researcher studied the topics of the book, and the method of distribution, scientific method, language, and examined the substantive issues, printing issues. The research concluded that the book is good, and achieve the educational Objectives, but it did not prejudice the methodological problems. According to these problems in the search in detail. This study of five parts: research methodology, the distribution of the topics, scientific infrastructure, linguistic and stylistic changes which had been, printing issues and technical . Then comes the conclusion of the search and consequences

Names of Ancient locations in Old Testament and Talmud, 1st part. (in Arabic)

Journal of the Academy of Sciences - Syriac Commission, Vol. 18, Academy of Sciences Press Baghdad.108-123, 2001

The Analysis and Researching of Immortality of the Soul in Avicenna's and Aquinas's Point of View

حکمت معاصر, 2012

Immortality of the soul has always been one of the crucial concerns of deist philosophers. Regard... more Immortality of the soul has always been one of the crucial concerns of deist philosophers. Regarding to significance and status of this problem, it would be accurate to say that all philosophical attempts proving the existence of the soul, have been dealing with setting fourth an explanatory definition of it. As two major figures in this tradition, Avicenna and Aquinas, following Aristotle, got substantially involved in giving a religiously and philosophically valid basis to support the existence of the soul. They both elaborated this concept on the Aristotelian understanding and further developed their own theories, viewing immortality as one of the pivotal features of the soul. For this reason, a succinct explanation of Aristotle's idea of the soul should be inevitably presented. This essay consists of two parts. The first part concerns explaining the concept of the soul, its abstractness and in corporeality and the way it is affiliated to the body, introductory to prove immor...

La creazione nell'arabo coranico, Note linguistiche e grammaticali

Protecting Private Space of Users Leaning on Virtualizing Security in Center of Cloud Calculations Data

In cloud computing, “security” and “trust” can involve such concerns as maintaining the confident... more In cloud computing, “security” and “trust” can involve such concerns as maintaining the confidentiality of sensitive data, and offering mechanisms for monitoring cloud computing servers. Trust can be developed for clients by service providers, third parties through an agreement, or special security services. This creates a considerable level of risk in maintaining the privacy and security of processed data by virtual machines. This article presented a new management solution for maintaining the security of personal data in data centers through virtualization, which could be accomplished by opting for a trusted platform and deleting personal data after releasing the intended platform. Using a new concept known as “a quarantined host”, this method assisted in increasing the security level of the infrastructure layer. Results demonstrated that, the presented method was effective in identifying and responding to attacks without inducing any noticeable change in the level of migration or...

Coppe Magiche dalla Mesopotamia

Géopolitique de la production et du trafic de drogues illicites crise du model licite de développement

Drugs raise power struggles to control territories and wealth, which makes it an eminently geopol... more Drugs raise power struggles to control territories and wealth, which makes it an eminently geopolitical object. Wealth, which is the subject of power struggles, is a purely lucrative illegal culture, especially in processing laboratories. Drug trafficking, an illicit but well-established market, is an international trade that includes all stages, from cultivation to the sale of substances that are, of course, prohibited. That said, drug trafficking is part of the process of globalization as it concerns traffickers who are direct beneficiaries of the prohibition or states that directly benefit from it by leading the war on drugs. In a world of increasing interdependence, inequalities and social disparities that are becoming more and more numerous and exploited, this drug problem is rich in teaching. The geography of drugs is to be considered with regard to the asymmetry of power, wealth and the impact on crises and conflicts.

Work it : the creation of angry young spaces in Northern soul music and kitchen sink drama

High GOR MPFM Flow Loop Testing Evaluation and Pre-Qualification

An investigation into the "nūn al-wiqāyati" in Classical Arabic

Kervan. International Journal of Afro-Asiatic Studies, 2018

The article aims to explain the denomination of the nūn al-wiqāyati (“the nūn of protection”) and... more The article aims to explain the denomination of the nūn al-wiqāyati (“the nūn of protection”) and its real function in classical Arabic, focusing on linguistics and the theories of the Arab grammarians. Explanations of its function fall broadly into two camps. One sees its function as a wiqāyati (“protection”) element, while the other considers it as a personal suffix, i.e. 1 st p. sg. –nī as an object. At the same time this paper argues for the two personal endings for the 1 st p. sg -ī and –nī in order to reach an acceptable morphological analysis. After reviewing the opinions of the classical and modern Arab grammarians about the nūn al-wiqāyati as an Arabic term, its original function becomes clear.

An improved transient algorithm for the simulation of a resonant tunneling diode

A fast algorithm is proposed for the simulation of the transient evolution of a resonant tunnelin... more A fast algorithm is proposed for the simulation of the transient evolution of a resonant tunneling diode by a multiscale approach. The problem is modeled by the time-dependent Schrodinger-Poisson system. By decomposing the wave function into a non resonant part and a resonant part, the fast algorithm is designed by combining standard finite difference method for the Schrodinger-Poisson equation with proper time-dependent and/or nonlinear transmission boundary condition. In addition, with a suitable interpolation of the non resonant one, an accurate and fast algorithm is presented for the computation of the resonant part via the projection method. With this two scale decomposition, the new numerical method can save the computational time significantly.

Double scale analysis of a Schrödinger–Poisson system with quantum wells and macroscopic nonlinearities in dimension 2 and 3

Asymptotic Analysis, 2009

We consider the stationary Schrödinger-Poisson model with a background potential describing a qua... more We consider the stationary Schrödinger-Poisson model with a background potential describing a quantum well. The Hamiltonian of this system composes of contributions-the background potential well plus a nonlinear repulsive term-which extends on di¤erent length scales with ratio parametrized by the small parameter h. With a partition function which forces the particles to remain in the quantum well, the limit h ! 0 in the nonlinear system leads to di¤erent asymptotic behaviours, including spectral renormalization, depending on the dimensions 1, 2 or 3.

Study Effective Atomic Numbers and Attenuation Cross-Section of Caprylic Acid by Using Gamma Ray Sources

Journal of Physics: Conference Series, 2019

Measured the effective atomic number(Z eff ), effective electron density (N eff ), atomic cross-s... more Measured the effective atomic number(Z eff ), effective electron density (N eff ), atomic cross-section (бt )and electronic cross-section (бe )depending on the amount of mass attenuation coefficient, the mass attenuation coefficients (μ m )measured for fatty acid “Caprylic” C8H16O2by using Gamma ray radiation(γ), emitted from sources Co57, Ba133, Na22, Cs137, Mn54, and Co60with energies from 122 to1330 keV. We used scintillation NaI(Tl) detector with resolution 8.2% (at 662keV ). The attenuation coefficient data were then used to obtain the effective atomic numbers (Z eff ), and effective electron densities (N eff ), atomic cross-section (бt )and electronic cross-section (бe ) off atty acids. It was observed that the effective atomic number (Z eff ) and effective electron densities (N eff ) initially decrease and tend to be almost constant as a function of gamma-ray energy. Z eff and N eff experimental values showed good agreement with the theoretical. Data on interaction of photons...

EFFICIENCY OF FOLIAR FERTILIZER WITH N AND K ON YIELD AND YIELD COMPONENT OF RICE ( Oryza sative L. (

Basrah Journal of Agricultural Sciences, 2007

The Landau-Zener Transition and the Surface Hopping Method for the 2D Dirac Equation for Graphene

Communications in Computational Physics, 2017

A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac... more A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac equation for Graphene with an electrostatic potential, in the semiclassical regime. In this problem, the crossing of the energy levels of the system at Dirac points requires a particular treatment in the algorithm in order to describe the quantum transition—characterized by the Landau-Zener probability— between different energy levels. We first derive the Landau-Zener probability for the underlying problem, then incorporate it into the surface hopping algorithm. We also show that different asymptotic models for this problem derived in [O. Morandi, F. Schurrer, J. Phys. A:Math. Theor. 44 (2011) 265301]may give different transition probabilities. We conduct numerical experiments to compare the solutions to the Dirac equation, the surface hopping algorithm, and the asymptotic models of [O. Morandi, F. Schurrer, J. Phys. A: Math. Theor. 44 (2011) 265301].

A Double Scale Fast Algorithm for the Transient Evolution of a Resonant Tunneling Diode

Multiscale Modeling & Simulation, 2017

The simulation of the time-dependent evolution of the resonant tunneling diode is done by a multi... more The simulation of the time-dependent evolution of the resonant tunneling diode is done by a multiscale algorithm exploiting the existence of resonant states. After revisiting the algorithm developed in [N. Ben Abdallah, O. Pinaud, J. Comput. Phys. 213, 1 (2006) 288-310] for the stationary case, the time-dependent problem is dealt with. The wave function is decomposed into a non resonant part and a resonant one. The projection method to compute the resonant part leads to an accurate algorithm thanks to a suitable interpolation of the non resonant one. The simulation times are largely reduced.

New Multiphase Flow Measurement Technologies for Wet Gas Application: Qualification and Field-Testing in Saudi Aramco Fields

SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, 2016

The purpose of this paper is to present and discuss the results of a qualification test of four M... more The purpose of this paper is to present and discuss the results of a qualification test of four Multiphase Flow Meter (MPFM) technologies in wet gas environment against a reliable and fully auditable test separator used with redundant measuring devices as a reference measurement. It will also clearly set procedures, and evaluation criteria used to qualify MPFM in Saudi Aramco gas condensate/wet gas fields in Saudi Arabia. This trial test was designed to ensure that clear conclusions are reached and that a purely objective evaluation of the results can be performed. The implementation of this new procedure has improved the confidence level of the reference measurement and eliminated any doubts on the performance of the test separator. In this challenging environment of wet gas, this has enabled a clear mapping of each MPFM technology performances and limitations versus operating and fluid conditions. It is the first time in Saudi Aramco to conduct a field trial test using a test sepa...

Design of experiments by committee of neural networks

2004 IEEE International Joint Conference on Neural Networks (IEEE Cat. No.04CH37541)

In this paper, we present a way of constructing Design of Experiments for neural networks models ... more In this paper, we present a way of constructing Design of Experiments for neural networks models such as Multi-Layer Perceptron (MLP). We are trying to solve the problem of modeling a phenomenon with a minimum of measurements and almost no a priori knowledge. Our method is based on Query By Committee (QBC) which compares the predictions of various models on unsampled locations in order to select the most informative. We compare it to a random selection of samples.

Variation of Total Stresses During Field Operation Using Finite Element Technique, Zubair Oil Field

Iraqi Journal of Oil and Gas Research (IJOGR)

The Zubair oil field is predominantly plagued by geomechanical issues, which can result in signif... more The Zubair oil field is predominantly plagued by geomechanical issues, which can result in significant non-productive time. The aim of this study is to present a reservoir model and a geomechanical model utilizing the finite element method. The intriguing data consisting of logs, calibration data, drilling reports, and mud reports were utilized to construct one-dimensional models (1D) for each well using Techlog 2015 software. Furthermore, the 3D geomechanical model was built utilizing Petrel 2017 software, while the finite element technique was implemented using the CMG 2018 program to predict the total stress states during production or injection operations in the field over a span of 10 years.The analysis results of all mechanical rock properties in the 3D geomechanical model revealed that Shuaiba and Al-Hammar domes were insufficient for maintaining stable wells, particularly in the Tanuma formation. However, the Mishrif formation displayed higher stability despite production. Furthermore, the 3D finite element model exhibited that the total horizontal stress decreased during production and increased in injection wells. This variation would result in an increase in the effective horizontal stress during production and a decrease in injection wells. Moreover, the effective vertical stress increased during production and decreased during injection wells. Based on these outcomes, it can be concluded that production could trigger an increase in the differential stress leading to rock shear failure, whereas in injection cases, pore pressure increased, and this caused tensile failure.

Application of Finite Element Technique: A Review Study

Iraqi Journal of Chemical and Petroleum Engineering

The finite element approach is used to solve a variety of difficulties, including well bore stabi... more The finite element approach is used to solve a variety of difficulties, including well bore stability, fluid flow production and injection wells, mechanical issues and others. Geomechanics is a term that includes a number of important aspects in the petroleum industry, such as studying the changes that can be occur in oil reservoirs and geological structures, and providing a picture of oil well stability during drilling. The current review study concerned about the advancements in the application of the finite element method (FEM) in the geomechanical field over a course of century. Firstly, the study presented the early advancements of this method by development the structural framework of stress, make numerical computer solution for 2D thermal stress then stress analysis of the airplane. The second part focused on the most recent developments of FEM, and this method generates new techniques for solving these problems, such as the 1D, 2D, and 3D finite element models; the dynamic p...

The book (literary criticism) for the sixth grade of the Preparatory School critical Study

ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES, 2018

On the basis of the importance of evaluating the curricula of the Arabic language in the Iraq... more On the basis of the importance of evaluating the curricula of the Arabic language in the Iraqi schools. These critical study analytical book (literary criticism) grade sixth preparatory. The researcher studied the topics of the book, and the method of distribution, scientific method, language, and examined the substantive issues, printing issues. The research concluded that the book is good, and achieve the educational Objectives, but it did not prejudice the methodological problems. According to these problems in the search in detail. This study of five parts: research methodology, the distribution of the topics, scientific infrastructure, linguistic and stylistic changes which had been, printing issues and technical . Then comes the conclusion of the search and consequences

Names of Ancient locations in Old Testament and Talmud, 1st part. (in Arabic)

Journal of the Academy of Sciences - Syriac Commission, Vol. 18, Academy of Sciences Press Baghdad.108-123, 2001

The Analysis and Researching of Immortality of the Soul in Avicenna's and Aquinas's Point of View

حکمت معاصر, 2012

Immortality of the soul has always been one of the crucial concerns of deist philosophers. Regard... more Immortality of the soul has always been one of the crucial concerns of deist philosophers. Regarding to significance and status of this problem, it would be accurate to say that all philosophical attempts proving the existence of the soul, have been dealing with setting fourth an explanatory definition of it. As two major figures in this tradition, Avicenna and Aquinas, following Aristotle, got substantially involved in giving a religiously and philosophically valid basis to support the existence of the soul. They both elaborated this concept on the Aristotelian understanding and further developed their own theories, viewing immortality as one of the pivotal features of the soul. For this reason, a succinct explanation of Aristotle's idea of the soul should be inevitably presented. This essay consists of two parts. The first part concerns explaining the concept of the soul, its abstractness and in corporeality and the way it is affiliated to the body, introductory to prove immor...

La creazione nell'arabo coranico, Note linguistiche e grammaticali

Protecting Private Space of Users Leaning on Virtualizing Security in Center of Cloud Calculations Data

In cloud computing, “security” and “trust” can involve such concerns as maintaining the confident... more In cloud computing, “security” and “trust” can involve such concerns as maintaining the confidentiality of sensitive data, and offering mechanisms for monitoring cloud computing servers. Trust can be developed for clients by service providers, third parties through an agreement, or special security services. This creates a considerable level of risk in maintaining the privacy and security of processed data by virtual machines. This article presented a new management solution for maintaining the security of personal data in data centers through virtualization, which could be accomplished by opting for a trusted platform and deleting personal data after releasing the intended platform. Using a new concept known as “a quarantined host”, this method assisted in increasing the security level of the infrastructure layer. Results demonstrated that, the presented method was effective in identifying and responding to attacks without inducing any noticeable change in the level of migration or...

Coppe Magiche dalla Mesopotamia

Géopolitique de la production et du trafic de drogues illicites crise du model licite de développement

Drugs raise power struggles to control territories and wealth, which makes it an eminently geopol... more Drugs raise power struggles to control territories and wealth, which makes it an eminently geopolitical object. Wealth, which is the subject of power struggles, is a purely lucrative illegal culture, especially in processing laboratories. Drug trafficking, an illicit but well-established market, is an international trade that includes all stages, from cultivation to the sale of substances that are, of course, prohibited. That said, drug trafficking is part of the process of globalization as it concerns traffickers who are direct beneficiaries of the prohibition or states that directly benefit from it by leading the war on drugs. In a world of increasing interdependence, inequalities and social disparities that are becoming more and more numerous and exploited, this drug problem is rich in teaching. The geography of drugs is to be considered with regard to the asymmetry of power, wealth and the impact on crises and conflicts.

Work it : the creation of angry young spaces in Northern soul music and kitchen sink drama

High GOR MPFM Flow Loop Testing Evaluation and Pre-Qualification

An investigation into the "nūn al-wiqāyati" in Classical Arabic

Kervan. International Journal of Afro-Asiatic Studies, 2018

The article aims to explain the denomination of the nūn al-wiqāyati (“the nūn of protection”) and... more The article aims to explain the denomination of the nūn al-wiqāyati (“the nūn of protection”) and its real function in classical Arabic, focusing on linguistics and the theories of the Arab grammarians. Explanations of its function fall broadly into two camps. One sees its function as a wiqāyati (“protection”) element, while the other considers it as a personal suffix, i.e. 1 st p. sg. –nī as an object. At the same time this paper argues for the two personal endings for the 1 st p. sg -ī and –nī in order to reach an acceptable morphological analysis. After reviewing the opinions of the classical and modern Arab grammarians about the nūn al-wiqāyati as an Arabic term, its original function becomes clear.

An improved transient algorithm for the simulation of a resonant tunneling diode

A fast algorithm is proposed for the simulation of the transient evolution of a resonant tunnelin... more A fast algorithm is proposed for the simulation of the transient evolution of a resonant tunneling diode by a multiscale approach. The problem is modeled by the time-dependent Schrodinger-Poisson system. By decomposing the wave function into a non resonant part and a resonant part, the fast algorithm is designed by combining standard finite difference method for the Schrodinger-Poisson equation with proper time-dependent and/or nonlinear transmission boundary condition. In addition, with a suitable interpolation of the non resonant one, an accurate and fast algorithm is presented for the computation of the resonant part via the projection method. With this two scale decomposition, the new numerical method can save the computational time significantly.

Double scale analysis of a Schrödinger–Poisson system with quantum wells and macroscopic nonlinearities in dimension 2 and 3

Asymptotic Analysis, 2009

We consider the stationary Schrödinger-Poisson model with a background potential describing a qua... more We consider the stationary Schrödinger-Poisson model with a background potential describing a quantum well. The Hamiltonian of this system composes of contributions-the background potential well plus a nonlinear repulsive term-which extends on di¤erent length scales with ratio parametrized by the small parameter h. With a partition function which forces the particles to remain in the quantum well, the limit h ! 0 in the nonlinear system leads to di¤erent asymptotic behaviours, including spectral renormalization, depending on the dimensions 1, 2 or 3.

Study Effective Atomic Numbers and Attenuation Cross-Section of Caprylic Acid by Using Gamma Ray Sources

Journal of Physics: Conference Series, 2019

Measured the effective atomic number(Z eff ), effective electron density (N eff ), atomic cross-s... more Measured the effective atomic number(Z eff ), effective electron density (N eff ), atomic cross-section (бt )and electronic cross-section (бe )depending on the amount of mass attenuation coefficient, the mass attenuation coefficients (μ m )measured for fatty acid “Caprylic” C8H16O2by using Gamma ray radiation(γ), emitted from sources Co57, Ba133, Na22, Cs137, Mn54, and Co60with energies from 122 to1330 keV. We used scintillation NaI(Tl) detector with resolution 8.2% (at 662keV ). The attenuation coefficient data were then used to obtain the effective atomic numbers (Z eff ), and effective electron densities (N eff ), atomic cross-section (бt )and electronic cross-section (бe ) off atty acids. It was observed that the effective atomic number (Z eff ) and effective electron densities (N eff ) initially decrease and tend to be almost constant as a function of gamma-ray energy. Z eff and N eff experimental values showed good agreement with the theoretical. Data on interaction of photons...

EFFICIENCY OF FOLIAR FERTILIZER WITH N AND K ON YIELD AND YIELD COMPONENT OF RICE ( Oryza sative L. (

Basrah Journal of Agricultural Sciences, 2007

The Landau-Zener Transition and the Surface Hopping Method for the 2D Dirac Equation for Graphene

Communications in Computational Physics, 2017

A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac... more A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac equation for Graphene with an electrostatic potential, in the semiclassical regime. In this problem, the crossing of the energy levels of the system at Dirac points requires a particular treatment in the algorithm in order to describe the quantum transition—characterized by the Landau-Zener probability— between different energy levels. We first derive the Landau-Zener probability for the underlying problem, then incorporate it into the surface hopping algorithm. We also show that different asymptotic models for this problem derived in [O. Morandi, F. Schurrer, J. Phys. A:Math. Theor. 44 (2011) 265301]may give different transition probabilities. We conduct numerical experiments to compare the solutions to the Dirac equation, the surface hopping algorithm, and the asymptotic models of [O. Morandi, F. Schurrer, J. Phys. A: Math. Theor. 44 (2011) 265301].

A Double Scale Fast Algorithm for the Transient Evolution of a Resonant Tunneling Diode

Multiscale Modeling & Simulation, 2017

The simulation of the time-dependent evolution of the resonant tunneling diode is done by a multi... more The simulation of the time-dependent evolution of the resonant tunneling diode is done by a multiscale algorithm exploiting the existence of resonant states. After revisiting the algorithm developed in [N. Ben Abdallah, O. Pinaud, J. Comput. Phys. 213, 1 (2006) 288-310] for the stationary case, the time-dependent problem is dealt with. The wave function is decomposed into a non resonant part and a resonant one. The projection method to compute the resonant part leads to an accurate algorithm thanks to a suitable interpolation of the non resonant one. The simulation times are largely reduced.

New Multiphase Flow Measurement Technologies for Wet Gas Application: Qualification and Field-Testing in Saudi Aramco Fields

SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, 2016

The purpose of this paper is to present and discuss the results of a qualification test of four M... more The purpose of this paper is to present and discuss the results of a qualification test of four Multiphase Flow Meter (MPFM) technologies in wet gas environment against a reliable and fully auditable test separator used with redundant measuring devices as a reference measurement. It will also clearly set procedures, and evaluation criteria used to qualify MPFM in Saudi Aramco gas condensate/wet gas fields in Saudi Arabia. This trial test was designed to ensure that clear conclusions are reached and that a purely objective evaluation of the results can be performed. The implementation of this new procedure has improved the confidence level of the reference measurement and eliminated any doubts on the performance of the test separator. In this challenging environment of wet gas, this has enabled a clear mapping of each MPFM technology performances and limitations versus operating and fluid conditions. It is the first time in Saudi Aramco to conduct a field trial test using a test sepa...

Design of experiments by committee of neural networks

2004 IEEE International Joint Conference on Neural Networks (IEEE Cat. No.04CH37541)

In this paper, we present a way of constructing Design of Experiments for neural networks models ... more In this paper, we present a way of constructing Design of Experiments for neural networks models such as Multi-Layer Perceptron (MLP). We are trying to solve the problem of modeling a phenomenon with a minimum of measurements and almost no a priori knowledge. Our method is based on Query By Committee (QBC) which compares the predictions of various models on unsampled locations in order to select the most informative. We compare it to a random selection of samples.