The Experts below are selected from a list of 15858 Experts worldwide ranked by ideXlab platform

Antonio Roberto De Medeiros - One of the best experts on this subject based on the ideXlab platform.

  • numerical simulation of the floating spiral pipeline Installation Procedure second stage spiral transportation behavior under waves
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Bruno Martins Jacovazzo, Fabrício Nogueira Corrêa, Breno Pinheiro Jacob, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The Floating Spiral pipeline Installation method consists basically in winding the pipeline into a huge floating spiral, and towing this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed. In this method the pipeline is fabricated onshore, as the spiral is created, under well controlled conditions and relatively relaxed time constraints. Therefore the welds can be better inspected, which allows for optimal control of quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral. This stage is studied in a companion paper [1], to be also presented at IPC2008. The second stage consists in towing the floating spiral pipeline employing standard tugboats before laying it at the Installation site. The objective of this work is, therefore, to present results of parametric studies for a large length pipeline at this second stage of the Floating Spiral method. The focus now is in the pipeline behavior under wave environmental conditions during transportation. Several numerical simulations are performed and the results are discussed and compared.© 2008 ASME

  • Numerical Simulation of the ‘Floating Spiral’ Pipeline Installation Procedure: First Stage, Spiral Assembly
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Danilo Machado Lawinscky Da Silva, Breno Pinheiro Jacob, Mauro Henrique Alves De Lima, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The underlying concept for the Floating Spiral pipeline Installation method is to wind the pipeline into a huge floating spiral, and then tow this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed in a single operation. In this method the pipes are fabricated on shore, which allows for optimal control of costs and quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral, which is then ready to be towed to the Installation site by standard tugboats. The objective of this work is to present results of studies for a long pipeline length at this first stage of the Floating Spiral method. The focus here is the process of moving the pipeline around a fixed structure to wind it and form the floating spiral. Problems related to modeling of contact between pipeline and its guides at the first spiral cycle, as well as contact between further pipeline cycles, are rigorously analyzed. Several numerical simulations are performed; the results are presented and discussed. Other stages of this Installation method have also been studied, and are presented in a companion paper [1].Copyright © 2008 by ASME

  • numerical simulation of offshore pipeline Installation by lateral deflection Procedure
    ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering, 2007
    Co-Authors: Danilo Machado Lawinscky Da Silva, Rodrigo De Almeida Bahiense, Breno Pinheriro Jacob, Antonio Roberto De Medeiros, Fernando Gomes Da Silva Torres, Marcos Nadalin Vaz Da Costa
    Abstract:

    Conventional offshore pipeline Installation operations in Brazil have been performed in an S-Lay Procedure employing the BGL-1 barge, owned by Petrobras. However, this Procedure has some limits, and may not be feasible in some particular scenarios. Therefore, the objective of this work is to present the numerical simulation of an alternative pipeline Installation Procedure. This Procedure basically consists of performing the pipeline assembly on shore, and deflecting it to the sea using a tug boat. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the seabed and shore from bathymetric curves. An actual pipeline Installation by this lateral deflection Procedure is analyzed and discussed. The characterization of the Procedure passes through the determination of the better velocity and direction of the tug boat in order to minimize the efforts on the pipeline (especially due to the curvatures).Copyright © 2007 by ASME

Fernando Gomes Da Silva Torres - One of the best experts on this subject based on the ideXlab platform.

  • numerical simulation of the floating spiral pipeline Installation Procedure second stage spiral transportation behavior under waves
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Bruno Martins Jacovazzo, Fabrício Nogueira Corrêa, Breno Pinheiro Jacob, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The Floating Spiral pipeline Installation method consists basically in winding the pipeline into a huge floating spiral, and towing this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed. In this method the pipeline is fabricated onshore, as the spiral is created, under well controlled conditions and relatively relaxed time constraints. Therefore the welds can be better inspected, which allows for optimal control of quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral. This stage is studied in a companion paper [1], to be also presented at IPC2008. The second stage consists in towing the floating spiral pipeline employing standard tugboats before laying it at the Installation site. The objective of this work is, therefore, to present results of parametric studies for a large length pipeline at this second stage of the Floating Spiral method. The focus now is in the pipeline behavior under wave environmental conditions during transportation. Several numerical simulations are performed and the results are discussed and compared.© 2008 ASME

  • Numerical Simulation of the ‘Floating Spiral’ Pipeline Installation Procedure: First Stage, Spiral Assembly
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Danilo Machado Lawinscky Da Silva, Breno Pinheiro Jacob, Mauro Henrique Alves De Lima, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The underlying concept for the Floating Spiral pipeline Installation method is to wind the pipeline into a huge floating spiral, and then tow this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed in a single operation. In this method the pipes are fabricated on shore, which allows for optimal control of costs and quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral, which is then ready to be towed to the Installation site by standard tugboats. The objective of this work is to present results of studies for a long pipeline length at this first stage of the Floating Spiral method. The focus here is the process of moving the pipeline around a fixed structure to wind it and form the floating spiral. Problems related to modeling of contact between pipeline and its guides at the first spiral cycle, as well as contact between further pipeline cycles, are rigorously analyzed. Several numerical simulations are performed; the results are presented and discussed. Other stages of this Installation method have also been studied, and are presented in a companion paper [1].Copyright © 2008 by ASME

  • numerical simulation of offshore pipeline Installation by lateral deflection Procedure
    ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering, 2007
    Co-Authors: Danilo Machado Lawinscky Da Silva, Rodrigo De Almeida Bahiense, Breno Pinheriro Jacob, Antonio Roberto De Medeiros, Fernando Gomes Da Silva Torres, Marcos Nadalin Vaz Da Costa
    Abstract:

    Conventional offshore pipeline Installation operations in Brazil have been performed in an S-Lay Procedure employing the BGL-1 barge, owned by Petrobras. However, this Procedure has some limits, and may not be feasible in some particular scenarios. Therefore, the objective of this work is to present the numerical simulation of an alternative pipeline Installation Procedure. This Procedure basically consists of performing the pipeline assembly on shore, and deflecting it to the sea using a tug boat. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the seabed and shore from bathymetric curves. An actual pipeline Installation by this lateral deflection Procedure is analyzed and discussed. The characterization of the Procedure passes through the determination of the better velocity and direction of the tug boat in order to minimize the efforts on the pipeline (especially due to the curvatures).Copyright © 2007 by ASME

Breno Pinheiro Jacob - One of the best experts on this subject based on the ideXlab platform.

  • Numerical Simulation of the ‘Floating Spiral’ Pipeline Installation Procedure: First Stage, Spiral Assembly
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Danilo Machado Lawinscky Da Silva, Breno Pinheiro Jacob, Mauro Henrique Alves De Lima, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The underlying concept for the Floating Spiral pipeline Installation method is to wind the pipeline into a huge floating spiral, and then tow this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed in a single operation. In this method the pipes are fabricated on shore, which allows for optimal control of costs and quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral, which is then ready to be towed to the Installation site by standard tugboats. The objective of this work is to present results of studies for a long pipeline length at this first stage of the Floating Spiral method. The focus here is the process of moving the pipeline around a fixed structure to wind it and form the floating spiral. Problems related to modeling of contact between pipeline and its guides at the first spiral cycle, as well as contact between further pipeline cycles, are rigorously analyzed. Several numerical simulations are performed; the results are presented and discussed. Other stages of this Installation method have also been studied, and are presented in a companion paper [1].Copyright © 2008 by ASME

  • numerical simulation of the floating spiral pipeline Installation Procedure second stage spiral transportation behavior under waves
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Bruno Martins Jacovazzo, Fabrício Nogueira Corrêa, Breno Pinheiro Jacob, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The Floating Spiral pipeline Installation method consists basically in winding the pipeline into a huge floating spiral, and towing this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed. In this method the pipeline is fabricated onshore, as the spiral is created, under well controlled conditions and relatively relaxed time constraints. Therefore the welds can be better inspected, which allows for optimal control of quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral. This stage is studied in a companion paper [1], to be also presented at IPC2008. The second stage consists in towing the floating spiral pipeline employing standard tugboats before laying it at the Installation site. The objective of this work is, therefore, to present results of parametric studies for a large length pipeline at this second stage of the Floating Spiral method. The focus now is in the pipeline behavior under wave environmental conditions during transportation. Several numerical simulations are performed and the results are discussed and compared.© 2008 ASME

Carl Horst Albrecht - One of the best experts on this subject based on the ideXlab platform.

  • Numerical Simulation of the ‘Floating Spiral’ Pipeline Installation Procedure: First Stage, Spiral Assembly
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Danilo Machado Lawinscky Da Silva, Breno Pinheiro Jacob, Mauro Henrique Alves De Lima, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The underlying concept for the Floating Spiral pipeline Installation method is to wind the pipeline into a huge floating spiral, and then tow this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed in a single operation. In this method the pipes are fabricated on shore, which allows for optimal control of costs and quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral, which is then ready to be towed to the Installation site by standard tugboats. The objective of this work is to present results of studies for a long pipeline length at this first stage of the Floating Spiral method. The focus here is the process of moving the pipeline around a fixed structure to wind it and form the floating spiral. Problems related to modeling of contact between pipeline and its guides at the first spiral cycle, as well as contact between further pipeline cycles, are rigorously analyzed. Several numerical simulations are performed; the results are presented and discussed. Other stages of this Installation method have also been studied, and are presented in a companion paper [1].Copyright © 2008 by ASME

  • numerical simulation of the floating spiral pipeline Installation Procedure second stage spiral transportation behavior under waves
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Bruno Martins Jacovazzo, Fabrício Nogueira Corrêa, Breno Pinheiro Jacob, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The Floating Spiral pipeline Installation method consists basically in winding the pipeline into a huge floating spiral, and towing this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed. In this method the pipeline is fabricated onshore, as the spiral is created, under well controlled conditions and relatively relaxed time constraints. Therefore the welds can be better inspected, which allows for optimal control of quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral. This stage is studied in a companion paper [1], to be also presented at IPC2008. The second stage consists in towing the floating spiral pipeline employing standard tugboats before laying it at the Installation site. The objective of this work is, therefore, to present results of parametric studies for a large length pipeline at this second stage of the Floating Spiral method. The focus now is in the pipeline behavior under wave environmental conditions during transportation. Several numerical simulations are performed and the results are discussed and compared.© 2008 ASME

Danilo Machado Lawinscky Da Silva - One of the best experts on this subject based on the ideXlab platform.

  • Numerical Simulation of the ‘Floating Spiral’ Pipeline Installation Procedure: First Stage, Spiral Assembly
    2008 7th International Pipeline Conference Volume 4, 2008
    Co-Authors: Danilo Machado Lawinscky Da Silva, Breno Pinheiro Jacob, Mauro Henrique Alves De Lima, Carl Horst Albrecht, Fernando Gomes Da Silva Torres, Antonio Roberto De Medeiros
    Abstract:

    The underlying concept for the Floating Spiral pipeline Installation method is to wind the pipeline into a huge floating spiral, and then tow this assembly to the Installation site, where the spiral is then unwound and lowered to the seabed in a single operation. In this method the pipes are fabricated on shore, which allows for optimal control of costs and quality in pipeline manufacturing. The first stage of the Installation process by this method consists in setting the pipeline afloat and winding it elastically to form a large flat spiral, which is then ready to be towed to the Installation site by standard tugboats. The objective of this work is to present results of studies for a long pipeline length at this first stage of the Floating Spiral method. The focus here is the process of moving the pipeline around a fixed structure to wind it and form the floating spiral. Problems related to modeling of contact between pipeline and its guides at the first spiral cycle, as well as contact between further pipeline cycles, are rigorously analyzed. Several numerical simulations are performed; the results are presented and discussed. Other stages of this Installation method have also been studied, and are presented in a companion paper [1].Copyright © 2008 by ASME

  • numerical simulation of offshore pipeline Installation by lateral deflection Procedure
    ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering, 2007
    Co-Authors: Danilo Machado Lawinscky Da Silva, Rodrigo De Almeida Bahiense, Breno Pinheriro Jacob, Antonio Roberto De Medeiros, Fernando Gomes Da Silva Torres, Marcos Nadalin Vaz Da Costa
    Abstract:

    Conventional offshore pipeline Installation operations in Brazil have been performed in an S-Lay Procedure employing the BGL-1 barge, owned by Petrobras. However, this Procedure has some limits, and may not be feasible in some particular scenarios. Therefore, the objective of this work is to present the numerical simulation of an alternative pipeline Installation Procedure. This Procedure basically consists of performing the pipeline assembly on shore, and deflecting it to the sea using a tug boat. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the seabed and shore from bathymetric curves. An actual pipeline Installation by this lateral deflection Procedure is analyzed and discussed. The characterization of the Procedure passes through the determination of the better velocity and direction of the tug boat in order to minimize the efforts on the pipeline (especially due to the curvatures).Copyright © 2007 by ASME