The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform

Hossein Yousefi - One of the best experts on this subject based on the ideXlab platform.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    © 2015, International Association for Mathematical Geosciences. In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

Younes Noorollahi - One of the best experts on this subject based on the ideXlab platform.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    © 2015, International Association for Mathematical Geosciences. In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

Harald Stollhofen - One of the best experts on this subject based on the ideXlab platform.

  • Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep Geothermal Well
    Geothermal Energy, 2019
    Co-Authors: Michael C. Drews, Kai Zosseder, Peter Hofstetter, Robert Straubinger, Andreas Gahr, Harald Stollhofen
    Abstract:

    For the first time, drilling- and velocity-based Well analysis and 3D basin modeling were combined to test the predictability and controlling factors of overpressure in the North Alpine Foreland Basin in SE Germany. More specifically, the techniques were tested in the sub-regional context of the deep Geothermal Well Geretsried GEN-1 (TVD = 4852 m), located in the south of Munich. A 3D basin model based on a total of 20 Wells was calibrated to the pressure distribution of four petroleum Wells and tested against the Geretsried GEN-1 Well. The results demonstrate that overpressure in the North Alpine Foreland Basin SE Germany can be predicted from a simple 3D basin model calibrated to a minimum number of Wells. Thereby, disequilibrium compaction likely acts as the main overpressure mechanism in the study area, underpinned by significantly higher sedimentation rates at overpressured locations. 3D basin modeling also confirms the role of Upper Cretaceous shales, which, if present, serve as an important pressure barrier between the under- to normally pressured Jurassic and overpressured Cenozoic basin fill. In addition, overpressure magnitudes of the Chattian might be higher than previously expected. The results of this study have great impact on future drilling campaigns in the North Alpine Foreland Basin in SE Germany. Minimized non-productive time and drilling cost, improved Well planning and increased safety are amongst the most important benefits of accurate pore pressure and overpressure prediction. The newly derived insights on the mechanisms of overpressure will greatly influence future geomechanical and tectonic studies, since pore pressure drives rock strength and principle stress magnitudes. Finally, the study is a great example for the importance of an interdisciplinary approach and the incorporation of geological conditions, when investigating drilling-related problems.

  • RETRACTED ARTICLE: Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep Geothermal Well
    Geothermal Energy, 2019
    Co-Authors: Michael C. Drews, Kai Zosseder, Peter Hofstetter, Robert Straubinger, Andreas Gahr, Harald Stollhofen
    Abstract:

    For the first time, drilling- and velocity-based Well analysis and 3D basin modeling were combined to test the predictability and controlling factors of overpressure in the North Alpine Foreland Basin in SE Germany. More specifically, the techniques were tested in the sub-regional context of the deep Geothermal Well Geretsried GEN-1 (TVD = 4852 m), located in the south of Munich. A 3D basin model based on a total of 20 Wells was calibrated to the pressure distribution of four petroleum Wells and tested against the Geretsried GEN-1 Well. The results demonstrate that overpressure in the North Alpine Foreland Basin SE Germany can be predicted from a simple 3D basin model calibrated to a minimum number of Wells. Thereby, disequilibrium compaction likely acts as the main overpressure mechanism in the study area, underpinned by significantly higher sedimentation rates at overpressured locations. 3D basin modeling also confirms the role of Upper Cretaceous shales, which, if present, serve as an important pressure barrier between the under- to normally pressured Jurassic and overpressured Cenozoic basin fill. In addition, overpressure magnitudes of the Chattian might be higher than previously expected. The results of this study have great impact on future drilling campaigns in the North Alpine Foreland Basin in SE Germany. Minimized non-productive time and drilling cost, improved Well planning and increased safety are amongst the most important benefits of accurate pore pressure and overpressure prediction. The newly derived insights on the mechanisms of overpressure will greatly influence future geomechanical and tectonic studies, since pore pressure drives rock strength and principle stress magnitudes. Finally, the study is a great example for the importance of an interdisciplinary approach and the incorporation of geological conditions, when investigating drilling-related problems.

Saeid Mohammadzadeh Bina - One of the best experts on this subject based on the ideXlab platform.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

  • Simulation of Power Production from Dry Geothermal Well Using Down-hole Heat Exchanger in Sabalan Field, Northwest Iran
    Natural Resources Research, 2016
    Co-Authors: Younes Noorollahi, Saeid Mohammadzadeh Bina, Hossein Yousefi
    Abstract:

    © 2015, International Association for Mathematical Geosciences. In this research, a simulation was performed for evaluating power production from an abandoned Geothermal Well as an enhanced Geothermal system by injecting a secondary fluid. Abandoned Wells, due to lack of fluid or very low transmissivity, are regarded among the low-to moderate-temperature resources that have the potential for heat production without any cost for deep drilling. Accordingly, they are taken as suitable sources of energy. In the present paper, an abandoned Geothermal Well at Meshkinshahr Geothermal field in Sabalan district, northwestern Iran, with 3176 m depth was simulated. The bottom-hole temperature of 148 °C, as Well as Well casing size, and real thermal gradient for Well were applied in the model. A 3D heat transfer simulation model was designed by considering a coaxial pipe as a down-hole heat exchanger between surrounding rocks of the Well and injected fluid. Injected fluid to the Well with specified pressure and temperature receives heat from rocks surrounding the Well, until it reaches the bottom of the Well and converts to vapor. The vapor returns to the surface from inner pipe with very low heat loss during its return. The inner pipe is isolated by a thin layer having a low heat conductivity to prevent heat loss from the returned fluid. It was observed that obtained heat in the Well depends on temperature profile of the Well, injection velocity, and fluid mass flow rate. The model results were optimized by selecting suitable parameters such as inlet injection speed and fluid flow rate to achieve the highest temperature of the fluid returned from the Well. A binary power plant was also modeled to determine the extractable power using returned fluid as input using ammonia and isobutene, as working fluids in binary cycle. Finally, electric power of 270 kW was generated from Well NWS3 using designed down-hole heat exchanger.

Michael C. Drews - One of the best experts on this subject based on the ideXlab platform.

  • Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep Geothermal Well
    Geothermal Energy, 2019
    Co-Authors: Michael C. Drews, Kai Zosseder, Peter Hofstetter, Robert Straubinger, Andreas Gahr, Harald Stollhofen
    Abstract:

    For the first time, drilling- and velocity-based Well analysis and 3D basin modeling were combined to test the predictability and controlling factors of overpressure in the North Alpine Foreland Basin in SE Germany. More specifically, the techniques were tested in the sub-regional context of the deep Geothermal Well Geretsried GEN-1 (TVD = 4852 m), located in the south of Munich. A 3D basin model based on a total of 20 Wells was calibrated to the pressure distribution of four petroleum Wells and tested against the Geretsried GEN-1 Well. The results demonstrate that overpressure in the North Alpine Foreland Basin SE Germany can be predicted from a simple 3D basin model calibrated to a minimum number of Wells. Thereby, disequilibrium compaction likely acts as the main overpressure mechanism in the study area, underpinned by significantly higher sedimentation rates at overpressured locations. 3D basin modeling also confirms the role of Upper Cretaceous shales, which, if present, serve as an important pressure barrier between the under- to normally pressured Jurassic and overpressured Cenozoic basin fill. In addition, overpressure magnitudes of the Chattian might be higher than previously expected. The results of this study have great impact on future drilling campaigns in the North Alpine Foreland Basin in SE Germany. Minimized non-productive time and drilling cost, improved Well planning and increased safety are amongst the most important benefits of accurate pore pressure and overpressure prediction. The newly derived insights on the mechanisms of overpressure will greatly influence future geomechanical and tectonic studies, since pore pressure drives rock strength and principle stress magnitudes. Finally, the study is a great example for the importance of an interdisciplinary approach and the incorporation of geological conditions, when investigating drilling-related problems.

  • RETRACTED ARTICLE: Predictability and controlling factors of overpressure in the North Alpine Foreland Basin, SE Germany: an interdisciplinary post-drill analysis of the Geretsried GEN-1 deep Geothermal Well
    Geothermal Energy, 2019
    Co-Authors: Michael C. Drews, Kai Zosseder, Peter Hofstetter, Robert Straubinger, Andreas Gahr, Harald Stollhofen
    Abstract:

    For the first time, drilling- and velocity-based Well analysis and 3D basin modeling were combined to test the predictability and controlling factors of overpressure in the North Alpine Foreland Basin in SE Germany. More specifically, the techniques were tested in the sub-regional context of the deep Geothermal Well Geretsried GEN-1 (TVD = 4852 m), located in the south of Munich. A 3D basin model based on a total of 20 Wells was calibrated to the pressure distribution of four petroleum Wells and tested against the Geretsried GEN-1 Well. The results demonstrate that overpressure in the North Alpine Foreland Basin SE Germany can be predicted from a simple 3D basin model calibrated to a minimum number of Wells. Thereby, disequilibrium compaction likely acts as the main overpressure mechanism in the study area, underpinned by significantly higher sedimentation rates at overpressured locations. 3D basin modeling also confirms the role of Upper Cretaceous shales, which, if present, serve as an important pressure barrier between the under- to normally pressured Jurassic and overpressured Cenozoic basin fill. In addition, overpressure magnitudes of the Chattian might be higher than previously expected. The results of this study have great impact on future drilling campaigns in the North Alpine Foreland Basin in SE Germany. Minimized non-productive time and drilling cost, improved Well planning and increased safety are amongst the most important benefits of accurate pore pressure and overpressure prediction. The newly derived insights on the mechanisms of overpressure will greatly influence future geomechanical and tectonic studies, since pore pressure drives rock strength and principle stress magnitudes. Finally, the study is a great example for the importance of an interdisciplinary approach and the incorporation of geological conditions, when investigating drilling-related problems.