In this short course, concept and the methodology of data integration in geological modeling are ... more In this short course, concept and the methodology of data integration in geological modeling are addressed with practical applications. Integration includes incorporation of geological information, seismic, petrophysical and dynamic data. Practical methodology of the best practices and troubleshooting of 3D reservoir characterization in the light of geo-statistics are covered in each step of geo-modeling processes. Process of data handling, importing, editing, quality controlling, quantitative analysis and constraining the results of modeling algorithms in the steps of picking, fault modeling, gridding, generating horizons, zoning, layering and property modeling are captured by using different tools and plots
The goal of 3D geological modelling is to generate the geometry, 3D grid and petrophysical proper... more The goal of 3D geological modelling is to generate the geometry, 3D grid and petrophysical properties of the reservoir in a three-dimensional geocellular structure to use as the base for a dynamic simulation study.
Consistent and complete input data, right workflow and quality checked results after each step are some of the important aspects of geological modeling work.
During oil and gas reservoir geological modeling, modellers face some problems. In this presentat... more During oil and gas reservoir geological modeling, modellers face some problems. In this presentation, you can find troubleshooting techniques.
Uncertainty analysis is a critical component of field development plan which describes the risks ... more Uncertainty analysis is a critical component of field development plan which describes the risks and assists to achieve comprehensive understanding of reservoir characteristics. Accurately assessing and ranking key uncertainties provides necessary tools to the technical and management team to mitigate risks appropriately and generate robust development scenarios over the range of key uncertainties. Uncertainty in input parameters impacts the project in two ways—in-place volumes and recovery factor. In this study, an analysis methodology is adopted in such a way to assess the impact of uncertainty on both independently.
Station means the spatially separated parts of the data that is effectively controlled by the sam... more Station means the spatially separated parts of the data that is effectively controlled by the same underlying system, or come from the same probability distribution.
If the reservoir has multiple stations, it implies that certain parts of the data should be treated differently with respect to the other parts in property modeling workflow. A certain statistical analysis would reveal stations in the dataset of interest.
Depth Match
In oil and gas field development, downhole activities or measurements are performed ... more Depth Match
In oil and gas field development, downhole activities or measurements are performed with a reference point in surface and expressed in a measure of depth.
Despite the Industry's heavy reliance on depth, its accuracy and the uncertainty reduction techniques are poorly specified. Distance between surface reference point and measurement point in well bore is quantified generally in measured depth but converted to vertical depth for the purpose of specifying location spatially with respect to all other well and field data.
Current oil and gas technologies are producing tremendous amount of data rapidly. Field developme... more Current oil and gas technologies are producing tremendous amount of data rapidly. Field development plans based on static model and simulation need to be updated with updated data stream continuously. This work provides some tools to achieve rapid updates.
Companies are spending millions of dollars in acquiring, collecting, and storing large volumes of... more Companies are spending millions of dollars in acquiring, collecting, and storing large volumes of data for investigative purposes to support mission-critical decisions. Unfortunately, very often the data is not processed in a timely manner to extract the necessary information for the management and experts to make business decisions. Furthermore, the available data is archived in various locations, in different formats, on different hardware and software platforms and hence making it available is very painful and tedious to use when required. The problem is further exacerbated by the inability to share the data among engineers, scientists, specialist and managers on a common and easy to use interface and environment.
Furthermore, the documents, information and experiences acquired and gained over the life time of the reservoir are not easily transferred typically due to changes in human resource and management. This usually results in repetitive work cycles causing lose of valuable time and business revenues.
This documents provides the state-of-the-art IT technologies and services to implement a complete Post-Operational Data Management (PODM) system that will eliminate difficulties mentioned above. Our approach is simple, effective, and highly scalable based on the modern non-proprietary ICT (Information Communication Technologies) and hence very cost effective. The significant component of this proposal will allow completing required reports and updating corporate database. In addition to various default analyses such as time-series analysis, linear and non-linear regressions, graphical charting and extensive reporting facilities are provided. This will free up valuable time of specialist to engage in more challenging tasks. We understand your business needs and hence will provide full technical support around the clock throughout the project term.
A crucial aspect of oil and gas spatial field operations, in a complex, hazardous facility enviro... more A crucial aspect of oil and gas spatial field operations, in a complex, hazardous facility environment is to be safe and accurate in geo-reference system.
Scanning surface facility with modern technologies generating real image and 3D coordinates of every object can form detailed and accurate 3D real model of the asset including inaccessible areas. Qualitative information is also obtained using high-resolution photography, which further enhances the effectiveness of the data. By merging video images and scanning of 360° digital object coordinates, oil and gas field visualization and management would be as easy as pressing a computer button at your fingertip.
ABSTRACT
Kaya, Avni Serdar (Master of Science in Petroleum Engineering)
Comprehensive Mechanistic... more ABSTRACT Kaya, Avni Serdar (Master of Science in Petroleum Engineering) Comprehensive Mechanistic Modeling of Two-Phase Flow in Deviated Wells (94 pp.) Directed by Dr. James P. Brill and Dr. Cem Sarica (276 words) A comprehensive mechanistic model is developed to predict flow pattern and calculate such flow characteristics as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five different flow patterns: bubbly, dispersed bubble, slug, churn and annular flows. The flow pattern prediction model consists of Barnea's (1987) unified model for predicting the dispersed bubble flow transition, a modified Ansari et al. (1994) annular flow transition model, and new models for predicting the bubbly to slug and slug to churn transitions. The new transition models are compared with existing models and published experimental data. The comparison shows that the transition models perform the best and are in good agreement with data. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new model for bubbly flow is developed. The Chokshi (1994) slug flow model and Tengesdal et al. (1998) churn flow model have been modified for deviated wells. The model of Ansari et al. is adopted for annular flow. For evaluation purposes, the existing Tulsa University Fluid Flow Projects (TUFFP) well databank has been expanded by including the Tulsa University Artificial Lift Projects (TUALP) well databank plus newly solicited field data. The expanded databank includes 2,052 cases covering a wide range of field and experimental data. The new comprehensive model is compared with the following commonly used mechanistic models and correlations: the Ansari et al., Chokshi, Hasan and Kabir (1988), and Tengesdal (1998) models and the Hagedorn and Brown (1965), Beggs and Brill (1973) and Aziz et al. (1972) correlations. The results of comparisons to data show that the new comprehensive model performs the best for both vertical and inclined pipes.
A thorough review of the existing models for slug-churn transi-tion in vertical and upward inclin... more A thorough review of the existing models for slug-churn transi-tion in vertical and upward inclined two-phase flow is present-ed. A new transition model based on the drift flux approach and experimental data has been proposed. The new transition model performed the best when it is compared with the exist-ing models and agreed very well with the published experi-mental data. Two separate hydrodynamic models are pre-sented to predict pressure drop and liquid holdup in churn flow. One is a modified slug model, and the other is a model based on drift flux approach. The performances of the hy-drodynamic models are evaluated against a well databank that contains 2052 well cases including laboratory and field data.
An assessment is made of the existing models for slug-churn transition in vertical and inclined u... more An assessment is made of the existing models for slug-churn transition in vertical and inclined upward two-phase flow. A new model based on the drift flux approach and experimental data has been developed for whole range of flow retes and inclination angle. The new model is compared with existing reviewed models and published experimental data. It is shown that new model is in better agreement with experimental data then existing models
Abstract
A new comprehensive mechanistic model is developed to predict flow pattern and flow char... more Abstract A new comprehensive mechanistic model is developed to predict flow pattern and flow characteristics such as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five flow patterns: bubbly, dispersed bubble, slug, churn and annular flows. Flow pattern prediction incorporates the transition models purposed by Barnea1 (or Taitel et al.2) for dispersed bubble, Ansari et al.3 for annular flow, Tengesdal et al.4 for churn flow, and a new bubbly flow transition model. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new hydrodynamic model for bubbly flow has been developed, and the Chokshi5 slug flow model has been modified significantly. The Tengesdal et al.4 and Ansari et al.3 models have been adopted for churn and annular flows, respectively. The comprehensive model is evaluated using a well databank of 2052 cases covering a wide range of field data. Pressure drop predictions with the model are also compared with those using the Ansari et al.3, Chokshi5, Hasan and Kabir6, and Tengesdal7 mechanistic models, and the Aziz et al.8, and Hagedorn and Brown9 correlations. The results of the comparison study show that the proposed comprehensive mechanistic model performs the best and agrees with the data.
A new unified model is proposed for the transition from annular to intermittent flow patterns for... more A new unified model is proposed for the transition from annular to intermittent flow patterns for the entire range of pipe inclination an-gles. Experimentally, it has been observed that the transition from an-nular flow takes place at a critical void fraction. To obtain a transition boundary equation, conservation of momentum equations for gas and the liquid film are combined and solved with the critical void fraction. The new model captures the correct transition characteristics, agrees favorably with experimental flow pattern data, and performs the best when compared with previous transition models.
Küresel krizler, Türkiye’nin Kritik Problemleri ve Teknoloji Çözümleri Küresel güçlerin özellikle... more Küresel krizler, Türkiye’nin Kritik Problemleri ve Teknoloji Çözümleri Küresel güçlerin özellikle 1. Dünya savaşından sonra dünyada birçok ulusun adeta damarlarına girerek insanlarını esirleştirdiği her geçen gün daha belirgin hale geldi. Toplumların sömürülmesi, kaynaklarının kullanılması için uygulanan yöntemler alenileşerek pervasızca uygulanmaya başlandı. Geçtiğimiz üç asır boyunca zemini tamamen çürütülmüş bir ortamdan çıkarak Türkiye; ekonomi, teknoloji ve sosyal alanlarda özgürleşme yolunda başarılar elde etmeye çalıştı. Bu anlamda, dünya lideri olarak küresel adalet ve barışın tesisi için topyekûn kalkınma ve yenilenme teklifimizi bu kitapla halkımıza, sonuçları sonsuza uzanacak mesuliyetimizi yerine getirmiş olmak amacı ile takdim ediyoruz.
10 larca eserden istifade edilerek 100lerce yazarin katilimi ile asrin anlayisina uygun Kuran tef... more 10 larca eserden istifade edilerek 100lerce yazarin katilimi ile asrin anlayisina uygun Kuran tefsiri. Hadisler, bilimsel aciklamalar ve diger ayetler isiginda secilen ayetlerin anlamlari veriliyor
In this short course, concept and the methodology of data integration in geological modeling are ... more In this short course, concept and the methodology of data integration in geological modeling are addressed with practical applications. Integration includes incorporation of geological information, seismic, petrophysical and dynamic data. Practical methodology of the best practices and troubleshooting of 3D reservoir characterization in the light of geo-statistics are covered in each step of geo-modeling processes. Process of data handling, importing, editing, quality controlling, quantitative analysis and constraining the results of modeling algorithms in the steps of picking, fault modeling, gridding, generating horizons, zoning, layering and property modeling are captured by using different tools and plots
The goal of 3D geological modelling is to generate the geometry, 3D grid and petrophysical proper... more The goal of 3D geological modelling is to generate the geometry, 3D grid and petrophysical properties of the reservoir in a three-dimensional geocellular structure to use as the base for a dynamic simulation study.
Consistent and complete input data, right workflow and quality checked results after each step are some of the important aspects of geological modeling work.
During oil and gas reservoir geological modeling, modellers face some problems. In this presentat... more During oil and gas reservoir geological modeling, modellers face some problems. In this presentation, you can find troubleshooting techniques.
Uncertainty analysis is a critical component of field development plan which describes the risks ... more Uncertainty analysis is a critical component of field development plan which describes the risks and assists to achieve comprehensive understanding of reservoir characteristics. Accurately assessing and ranking key uncertainties provides necessary tools to the technical and management team to mitigate risks appropriately and generate robust development scenarios over the range of key uncertainties. Uncertainty in input parameters impacts the project in two ways—in-place volumes and recovery factor. In this study, an analysis methodology is adopted in such a way to assess the impact of uncertainty on both independently.
Station means the spatially separated parts of the data that is effectively controlled by the sam... more Station means the spatially separated parts of the data that is effectively controlled by the same underlying system, or come from the same probability distribution.
If the reservoir has multiple stations, it implies that certain parts of the data should be treated differently with respect to the other parts in property modeling workflow. A certain statistical analysis would reveal stations in the dataset of interest.
Depth Match
In oil and gas field development, downhole activities or measurements are performed ... more Depth Match
In oil and gas field development, downhole activities or measurements are performed with a reference point in surface and expressed in a measure of depth.
Despite the Industry's heavy reliance on depth, its accuracy and the uncertainty reduction techniques are poorly specified. Distance between surface reference point and measurement point in well bore is quantified generally in measured depth but converted to vertical depth for the purpose of specifying location spatially with respect to all other well and field data.
Current oil and gas technologies are producing tremendous amount of data rapidly. Field developme... more Current oil and gas technologies are producing tremendous amount of data rapidly. Field development plans based on static model and simulation need to be updated with updated data stream continuously. This work provides some tools to achieve rapid updates.
Companies are spending millions of dollars in acquiring, collecting, and storing large volumes of... more Companies are spending millions of dollars in acquiring, collecting, and storing large volumes of data for investigative purposes to support mission-critical decisions. Unfortunately, very often the data is not processed in a timely manner to extract the necessary information for the management and experts to make business decisions. Furthermore, the available data is archived in various locations, in different formats, on different hardware and software platforms and hence making it available is very painful and tedious to use when required. The problem is further exacerbated by the inability to share the data among engineers, scientists, specialist and managers on a common and easy to use interface and environment.
Furthermore, the documents, information and experiences acquired and gained over the life time of the reservoir are not easily transferred typically due to changes in human resource and management. This usually results in repetitive work cycles causing lose of valuable time and business revenues.
This documents provides the state-of-the-art IT technologies and services to implement a complete Post-Operational Data Management (PODM) system that will eliminate difficulties mentioned above. Our approach is simple, effective, and highly scalable based on the modern non-proprietary ICT (Information Communication Technologies) and hence very cost effective. The significant component of this proposal will allow completing required reports and updating corporate database. In addition to various default analyses such as time-series analysis, linear and non-linear regressions, graphical charting and extensive reporting facilities are provided. This will free up valuable time of specialist to engage in more challenging tasks. We understand your business needs and hence will provide full technical support around the clock throughout the project term.
A crucial aspect of oil and gas spatial field operations, in a complex, hazardous facility enviro... more A crucial aspect of oil and gas spatial field operations, in a complex, hazardous facility environment is to be safe and accurate in geo-reference system.
Scanning surface facility with modern technologies generating real image and 3D coordinates of every object can form detailed and accurate 3D real model of the asset including inaccessible areas. Qualitative information is also obtained using high-resolution photography, which further enhances the effectiveness of the data. By merging video images and scanning of 360° digital object coordinates, oil and gas field visualization and management would be as easy as pressing a computer button at your fingertip.
ABSTRACT
Kaya, Avni Serdar (Master of Science in Petroleum Engineering)
Comprehensive Mechanistic... more ABSTRACT Kaya, Avni Serdar (Master of Science in Petroleum Engineering) Comprehensive Mechanistic Modeling of Two-Phase Flow in Deviated Wells (94 pp.) Directed by Dr. James P. Brill and Dr. Cem Sarica (276 words) A comprehensive mechanistic model is developed to predict flow pattern and calculate such flow characteristics as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five different flow patterns: bubbly, dispersed bubble, slug, churn and annular flows. The flow pattern prediction model consists of Barnea's (1987) unified model for predicting the dispersed bubble flow transition, a modified Ansari et al. (1994) annular flow transition model, and new models for predicting the bubbly to slug and slug to churn transitions. The new transition models are compared with existing models and published experimental data. The comparison shows that the transition models perform the best and are in good agreement with data. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new model for bubbly flow is developed. The Chokshi (1994) slug flow model and Tengesdal et al. (1998) churn flow model have been modified for deviated wells. The model of Ansari et al. is adopted for annular flow. For evaluation purposes, the existing Tulsa University Fluid Flow Projects (TUFFP) well databank has been expanded by including the Tulsa University Artificial Lift Projects (TUALP) well databank plus newly solicited field data. The expanded databank includes 2,052 cases covering a wide range of field and experimental data. The new comprehensive model is compared with the following commonly used mechanistic models and correlations: the Ansari et al., Chokshi, Hasan and Kabir (1988), and Tengesdal (1998) models and the Hagedorn and Brown (1965), Beggs and Brill (1973) and Aziz et al. (1972) correlations. The results of comparisons to data show that the new comprehensive model performs the best for both vertical and inclined pipes.
A thorough review of the existing models for slug-churn transi-tion in vertical and upward inclin... more A thorough review of the existing models for slug-churn transi-tion in vertical and upward inclined two-phase flow is present-ed. A new transition model based on the drift flux approach and experimental data has been proposed. The new transition model performed the best when it is compared with the exist-ing models and agreed very well with the published experi-mental data. Two separate hydrodynamic models are pre-sented to predict pressure drop and liquid holdup in churn flow. One is a modified slug model, and the other is a model based on drift flux approach. The performances of the hy-drodynamic models are evaluated against a well databank that contains 2052 well cases including laboratory and field data.
An assessment is made of the existing models for slug-churn transition in vertical and inclined u... more An assessment is made of the existing models for slug-churn transition in vertical and inclined upward two-phase flow. A new model based on the drift flux approach and experimental data has been developed for whole range of flow retes and inclination angle. The new model is compared with existing reviewed models and published experimental data. It is shown that new model is in better agreement with experimental data then existing models
Abstract
A new comprehensive mechanistic model is developed to predict flow pattern and flow char... more Abstract A new comprehensive mechanistic model is developed to predict flow pattern and flow characteristics such as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five flow patterns: bubbly, dispersed bubble, slug, churn and annular flows. Flow pattern prediction incorporates the transition models purposed by Barnea1 (or Taitel et al.2) for dispersed bubble, Ansari et al.3 for annular flow, Tengesdal et al.4 for churn flow, and a new bubbly flow transition model. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new hydrodynamic model for bubbly flow has been developed, and the Chokshi5 slug flow model has been modified significantly. The Tengesdal et al.4 and Ansari et al.3 models have been adopted for churn and annular flows, respectively. The comprehensive model is evaluated using a well databank of 2052 cases covering a wide range of field data. Pressure drop predictions with the model are also compared with those using the Ansari et al.3, Chokshi5, Hasan and Kabir6, and Tengesdal7 mechanistic models, and the Aziz et al.8, and Hagedorn and Brown9 correlations. The results of the comparison study show that the proposed comprehensive mechanistic model performs the best and agrees with the data.
A new unified model is proposed for the transition from annular to intermittent flow patterns for... more A new unified model is proposed for the transition from annular to intermittent flow patterns for the entire range of pipe inclination an-gles. Experimentally, it has been observed that the transition from an-nular flow takes place at a critical void fraction. To obtain a transition boundary equation, conservation of momentum equations for gas and the liquid film are combined and solved with the critical void fraction. The new model captures the correct transition characteristics, agrees favorably with experimental flow pattern data, and performs the best when compared with previous transition models.
Küresel krizler, Türkiye’nin Kritik Problemleri ve Teknoloji Çözümleri Küresel güçlerin özellikle... more Küresel krizler, Türkiye’nin Kritik Problemleri ve Teknoloji Çözümleri Küresel güçlerin özellikle 1. Dünya savaşından sonra dünyada birçok ulusun adeta damarlarına girerek insanlarını esirleştirdiği her geçen gün daha belirgin hale geldi. Toplumların sömürülmesi, kaynaklarının kullanılması için uygulanan yöntemler alenileşerek pervasızca uygulanmaya başlandı. Geçtiğimiz üç asır boyunca zemini tamamen çürütülmüş bir ortamdan çıkarak Türkiye; ekonomi, teknoloji ve sosyal alanlarda özgürleşme yolunda başarılar elde etmeye çalıştı. Bu anlamda, dünya lideri olarak küresel adalet ve barışın tesisi için topyekûn kalkınma ve yenilenme teklifimizi bu kitapla halkımıza, sonuçları sonsuza uzanacak mesuliyetimizi yerine getirmiş olmak amacı ile takdim ediyoruz.
10 larca eserden istifade edilerek 100lerce yazarin katilimi ile asrin anlayisina uygun Kuran tef... more 10 larca eserden istifade edilerek 100lerce yazarin katilimi ile asrin anlayisina uygun Kuran tefsiri. Hadisler, bilimsel aciklamalar ve diger ayetler isiginda secilen ayetlerin anlamlari veriliyor
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Geology by Serdar Kaya
Process of data handling, importing, editing, quality controlling, quantitative analysis and constraining the results of modeling algorithms in the steps of picking, fault modeling, gridding, generating horizons, zoning, layering and property modeling are captured by using different tools and plots
Consistent and complete input data, right workflow and quality checked results after each step are some of the important aspects of geological modeling work.
If the reservoir has multiple stations, it implies that certain parts of the data should be treated differently with respect to the other parts in property modeling workflow. A certain statistical analysis would reveal stations in the dataset of interest.
In oil and gas field development, downhole activities or measurements are performed with a reference point in surface and expressed in a measure of depth.
Despite the Industry's heavy reliance on depth, its accuracy and the uncertainty reduction techniques are poorly specified. Distance between surface reference point and measurement point in well bore is quantified generally in measured depth but converted to vertical depth for the purpose of specifying location spatially with respect to all other well and field data.
Furthermore, the documents, information and experiences acquired and gained over the life time of the reservoir are not easily transferred typically due to changes in human resource and management. This usually results in repetitive work cycles causing lose of valuable time and business revenues.
This documents provides the state-of-the-art IT technologies and services to implement a complete Post-Operational Data Management (PODM) system that will eliminate difficulties mentioned above. Our approach is simple, effective, and highly scalable based on the modern non-proprietary ICT (Information Communication Technologies) and hence very cost effective. The significant component of this proposal will allow completing required reports and updating corporate database. In addition to various default analyses such as time-series analysis, linear and non-linear regressions, graphical charting and extensive reporting facilities are provided. This will free up valuable time of specialist to engage in more challenging tasks. We understand your business needs and hence will provide full technical support around the clock throughout the project term.
Scanning surface facility with modern technologies generating real image and 3D coordinates of every object can form detailed and accurate 3D real model of the asset including inaccessible areas. Qualitative information is also obtained using high-resolution photography, which further enhances the effectiveness of the data. By merging video images and scanning of 360° digital object coordinates, oil and gas field visualization and management would be as easy as pressing a computer button at your fingertip.
2 Phase Flow by Serdar Kaya
Kaya, Avni Serdar (Master of Science in Petroleum Engineering)
Comprehensive Mechanistic Modeling of Two-Phase Flow in Deviated Wells (94 pp.)
Directed by Dr. James P. Brill and Dr. Cem Sarica
(276 words)
A comprehensive mechanistic model is developed to predict flow pattern and calculate such flow characteristics as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five different flow patterns: bubbly, dispersed bubble, slug, churn and annular flows.
The flow pattern prediction model consists of Barnea's (1987) unified model for predicting the dispersed bubble flow transition, a modified Ansari et al. (1994) annular flow transition model, and new models for predicting the bubbly to slug and slug to churn transitions. The new transition models are compared with existing models and published experimental data. The comparison shows that the transition models perform the best and are in good agreement with data.
For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new model for bubbly flow is developed. The Chokshi (1994) slug flow model and Tengesdal et al. (1998) churn flow model have been modified for deviated wells. The model of Ansari et al. is adopted for annular flow.
For evaluation purposes, the existing Tulsa University Fluid Flow Projects (TUFFP) well databank has been expanded by including the Tulsa University Artificial Lift Projects (TUALP) well databank plus newly solicited field data. The expanded databank includes 2,052 cases covering a wide range of field and experimental data. The new comprehensive model is compared with the following commonly used mechanistic models and correlations: the Ansari et al., Chokshi, Hasan and Kabir (1988), and Tengesdal (1998) models and the Hagedorn and Brown (1965), Beggs and Brill (1973) and Aziz et al. (1972) correlations. The results of comparisons to data show that the new comprehensive model performs the best for both vertical and inclined pipes.
A new comprehensive mechanistic model is developed to predict flow pattern and flow characteristics such as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five flow patterns: bubbly, dispersed bubble, slug, churn and annular flows.
Flow pattern prediction incorporates the transition models purposed by Barnea1 (or Taitel et al.2) for dispersed bubble, Ansari et al.3 for annular flow, Tengesdal et al.4 for churn flow, and a new bubbly flow transition model. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new hydrodynamic model for bubbly flow has been developed, and the Chokshi5 slug flow model has been modified significantly. The Tengesdal et al.4 and Ansari et al.3 models have been adopted for churn and annular flows, respectively.
The comprehensive model is evaluated using a well databank of 2052 cases covering a wide range of field data. Pressure drop predictions with the model are also compared with those using the Ansari et al.3, Chokshi5, Hasan and Kabir6, and Tengesdal7 mechanistic models, and the Aziz et al.8, and Hagedorn and Brown9 correlations. The results of the comparison study show that the proposed comprehensive mechanistic model performs the best and agrees with the data.
Turkiye by Serdar Kaya
Papers by Serdar Kaya
Books by Serdar Kaya
Process of data handling, importing, editing, quality controlling, quantitative analysis and constraining the results of modeling algorithms in the steps of picking, fault modeling, gridding, generating horizons, zoning, layering and property modeling are captured by using different tools and plots
Consistent and complete input data, right workflow and quality checked results after each step are some of the important aspects of geological modeling work.
If the reservoir has multiple stations, it implies that certain parts of the data should be treated differently with respect to the other parts in property modeling workflow. A certain statistical analysis would reveal stations in the dataset of interest.
In oil and gas field development, downhole activities or measurements are performed with a reference point in surface and expressed in a measure of depth.
Despite the Industry's heavy reliance on depth, its accuracy and the uncertainty reduction techniques are poorly specified. Distance between surface reference point and measurement point in well bore is quantified generally in measured depth but converted to vertical depth for the purpose of specifying location spatially with respect to all other well and field data.
Furthermore, the documents, information and experiences acquired and gained over the life time of the reservoir are not easily transferred typically due to changes in human resource and management. This usually results in repetitive work cycles causing lose of valuable time and business revenues.
This documents provides the state-of-the-art IT technologies and services to implement a complete Post-Operational Data Management (PODM) system that will eliminate difficulties mentioned above. Our approach is simple, effective, and highly scalable based on the modern non-proprietary ICT (Information Communication Technologies) and hence very cost effective. The significant component of this proposal will allow completing required reports and updating corporate database. In addition to various default analyses such as time-series analysis, linear and non-linear regressions, graphical charting and extensive reporting facilities are provided. This will free up valuable time of specialist to engage in more challenging tasks. We understand your business needs and hence will provide full technical support around the clock throughout the project term.
Scanning surface facility with modern technologies generating real image and 3D coordinates of every object can form detailed and accurate 3D real model of the asset including inaccessible areas. Qualitative information is also obtained using high-resolution photography, which further enhances the effectiveness of the data. By merging video images and scanning of 360° digital object coordinates, oil and gas field visualization and management would be as easy as pressing a computer button at your fingertip.
Kaya, Avni Serdar (Master of Science in Petroleum Engineering)
Comprehensive Mechanistic Modeling of Two-Phase Flow in Deviated Wells (94 pp.)
Directed by Dr. James P. Brill and Dr. Cem Sarica
(276 words)
A comprehensive mechanistic model is developed to predict flow pattern and calculate such flow characteristics as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five different flow patterns: bubbly, dispersed bubble, slug, churn and annular flows.
The flow pattern prediction model consists of Barnea's (1987) unified model for predicting the dispersed bubble flow transition, a modified Ansari et al. (1994) annular flow transition model, and new models for predicting the bubbly to slug and slug to churn transitions. The new transition models are compared with existing models and published experimental data. The comparison shows that the transition models perform the best and are in good agreement with data.
For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new model for bubbly flow is developed. The Chokshi (1994) slug flow model and Tengesdal et al. (1998) churn flow model have been modified for deviated wells. The model of Ansari et al. is adopted for annular flow.
For evaluation purposes, the existing Tulsa University Fluid Flow Projects (TUFFP) well databank has been expanded by including the Tulsa University Artificial Lift Projects (TUALP) well databank plus newly solicited field data. The expanded databank includes 2,052 cases covering a wide range of field and experimental data. The new comprehensive model is compared with the following commonly used mechanistic models and correlations: the Ansari et al., Chokshi, Hasan and Kabir (1988), and Tengesdal (1998) models and the Hagedorn and Brown (1965), Beggs and Brill (1973) and Aziz et al. (1972) correlations. The results of comparisons to data show that the new comprehensive model performs the best for both vertical and inclined pipes.
A new comprehensive mechanistic model is developed to predict flow pattern and flow characteristics such as pressure drop and liquid holdup in vertical and deviated wells. The model identifies five flow patterns: bubbly, dispersed bubble, slug, churn and annular flows.
Flow pattern prediction incorporates the transition models purposed by Barnea1 (or Taitel et al.2) for dispersed bubble, Ansari et al.3 for annular flow, Tengesdal et al.4 for churn flow, and a new bubbly flow transition model. For each predicted flow pattern, a separate hydrodynamic mechanistic model is proposed. A new hydrodynamic model for bubbly flow has been developed, and the Chokshi5 slug flow model has been modified significantly. The Tengesdal et al.4 and Ansari et al.3 models have been adopted for churn and annular flows, respectively.
The comprehensive model is evaluated using a well databank of 2052 cases covering a wide range of field data. Pressure drop predictions with the model are also compared with those using the Ansari et al.3, Chokshi5, Hasan and Kabir6, and Tengesdal7 mechanistic models, and the Aziz et al.8, and Hagedorn and Brown9 correlations. The results of the comparison study show that the proposed comprehensive mechanistic model performs the best and agrees with the data.