Relevant bibliographies by topics / Subsea pipelaying; Dynamic analysis

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Subsea pipelaying; Dynamic analysis'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Subsea pipelaying; Dynamic analysis"

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Yu, Kai An, and Ke Yu Chen. "Dynamic Analysis of the Pipe Lifting Mechanism on the Deepwater Pipelaying Vessel." Advanced Materials Research 199-200 (February 2011): 251–56. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.251.

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Based on requirements of pipe transport systems on deepwater pipelaying vessel, a new pipe lifting mechanism was designed. It was composed of crank-rocker and rocker-slider mechanism with good lifting capacity and high efficiency. When the slider went to the upper limit position, the mechanism could approximatively dwell, meeting the requirement for transverse conveyor operation. According to the theory of dynamics, numerical analysis method was used to the dynamic analysis of the mechanism. The results showed the maximum counterforce was at the joint between the rocker and ground, and this calculation could be a guideline for the kinematic pair structure designing.
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Ju, Xuanze, Wei Fang, Hanjun Yin, and Ying Jiang. "Stress analysis of the subsea dynamic riser baseprocess piping." Journal of Marine Science and Application 13, no. 3 (August 27, 2014): 327–32. http://dx.doi.org/10.1007/s11804-014-1264-8.

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Wang, Zhe, Zhi Huachen, Hongbo Liu, and Yidu Bu. "Static and dynamic analysis on upheaval buckling of unburied subsea pipelines." Ocean Engineering 104 (August 2015): 249–56. http://dx.doi.org/10.1016/j.oceaneng.2015.05.019.

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Woo, Jong Hun, Jong Ho Nam, and Kwang Hee Ko. "Development of a simulation method for the subsea production system." Journal of Computational Design and Engineering 1, no. 3 (July 1, 2014): 173–86. http://dx.doi.org/10.7315/jcde.2014.017.

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Abstract The failure of a subsea production plant could induce fatal hazards and enormous loss to human lives, environments, and properties. Thus, for securing integrated design safety, core source technologies include subsea system integration that has high safety and reliability and a technique for the subsea flow assurance of subsea production plant and subsea pipeline network fluids. The evaluation of subsea flow assurance needs to be performed considering the performance of a subsea production plant, reservoir production characteristics, and the flow characteristics of multiphase fluids. A subsea production plant is installed in the deep sea, and thus is exposed to a high-pressure/low-temperature environment. Accordingly, hydrates could be formed inside a subsea production plant or within a subsea pipeline network. These hydrates could induce serious damages by blocking the flow of subsea fluids. In this study, a simulation technology, which can visualize the system configuration of subsea production processes and can simulate stable flow of fluids, was introduced. Most existing subsea simulations have performed the analysis of dynamic behaviors for the installation of subsea facilities or the flow analysis of multiphase flow within pipes. The above studies occupy extensive research areas of the subsea field. In this study, with the goal of simulating the configuration of an entire deep sea production system compared to existing studies, a DES-based simulation technology, which can logically simulate oil production processes in the deep sea, was analyzed, and an implementation example of a simplified case was introduced.
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Choi, Han-Suk, Do Kyun Kim, Seungman Kim, Eun-Jee Cheon, and Kyoung-Su Kim. "Subsea Equipment Decommissioning Using Fiber Rope." MATEC Web of Conferences 203 (2018): 01014. http://dx.doi.org/10.1051/matecconf/201820301014.

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A comparative study of lifting lines for subsea equipment decommissioning was conducted to evaluate the applicability of fiber ropes. Generally, conventional steel wire ropes are used for subsea equipment decommissioning operations, but there are some disadvantages in using steel wires as the lifting lines at deepwater depth. To overcome the disadvantages, fiber ropes are proposed for using as lifting lines. The comparative methods to evaluate the performance of both lifting lines include three sections of calculations, payload capacity, and horizontal offset due to current, critical length of lifting line. Moreover, dynamic analysis using Orcaflex was performed to compare the dynamic forces occurring in the lifting lines during subsea equipment decommissioning. The results showed that the fiber ropes had advantages in payload capacity, critical length of lifting line and lower dynamic forces occurred compared to the steel wire ropes at deepwater depth.
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Babu, P. V. Thangam, and D. V. Reddy. "Dynamic Coupled Fluid-Structure Interaction Analysis of Flexible Floating Platforms." Journal of Energy Resources Technology 108, no. 4 (December 1, 1986): 297–304. http://dx.doi.org/10.1115/1.3231280.

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The paper presents the dynamic response analysis of a flexible floating platform subjected to water transmitted, amplified earthquake accelerations input at its base. The finite element method is used for formulating the unsymmetric, coupled dynamic equations of equilibrium of the fluid-structure continuum. The boundary conditions include the free surface wave and radiation damping. The amplification of the earthquake through the water medium is studied using a linear system of lumped masses, springs, and dashpots. A new procedure is demonstrated to solve the coupled, unsymmetric equations using a specially developed computer program FLUSIN. Depending on the water depth, it is estimated that the vertical accelerations transmitted to the bottom of the floating structure may be amplified considerably. Cavitation is a possibility for greater depths and higher accelerations. Two numerical illustrations are presented—a floating nuclear plant and a liquid petroleum gas storage facility subjected to amplitude earthquake accelerations. The results compare well with those obtained by other investigators using approximate techniques. The procedure can be applied to floating exploration/production-storage/transportation platforms and pipelaying barges subjected to water transmitted earthquake forces. The formulation is easily adaptable to any fluid-structure system as well as for other kinds of dynamic excitation. With the increased focusing of attention to compliant-type tension-legged platforms and semisubmersibles for production/drilling and LPG storage platforms, the project is of considerable significance. The work is a forerunner for much needed experimental investigation, particularly with respect to cavitation. Also, the findings would have considerable spin-off effects to OTEC concepts.
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McNamara, J. F., P. J. O’Brien, and S. G. Gilroy. "Nonlinear Analysis of Flexible Risers Using Hybrid Finite Elements." Journal of Offshore Mechanics and Arctic Engineering 110, no. 3 (August 1, 1988): 197–204. http://dx.doi.org/10.1115/1.3257051.

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A method is developed for the static and dynamic analysis of flexible risers and pipelines in the offshore environment under conditions of arbitrarily large motions due to wave loading and vessel movements. A mixed finite element formulation is adopted where the axial force is independently interpolated and only combined with the corresponding axial displacements via a Lagrangian constraint. An advantage of the resulting hybrid beam element is that it may be applied to offshore components varying from mooring lines or cables to pipelines with finite bending stiffnesses. Results are presented for the motions and forces on a flexible riser connecting a tanker to a subsea tower and also on a combined flexible riser and subsea support buoy structure which is part of a floating offshore production system.
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Jia, Peng, Zhehua Zhang, Xiangyu Wang, Yongzhe Qu, Hao Zhang, and Honghai Wang. "Research on dynamic response of subsea control system based on partial correlation analysis." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 39, no. 4 (August 2021): 847–57. http://dx.doi.org/10.1051/jnwpu/20213940847.

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In this article, taking a specific underwater hydraulic system as the research object, a closed loop circuit and a closed non-loop circuit simulation models are established; and through a single factor analysis, the interior factors such as different pipeline damping settings, underwater accumulators and actuators, and external factors such as water depth and return distance are analyzed. System response curves of these factors are obtained. Based on the single-factor simulation data, the partial correlation theory is used to analyze the correlation of the influencing factors of the control response for the underwater hydraulic system, and the order of the main factors affecting the control response of the underwater hydraulic system is obtained, which provides a reference for improving the response of the underwater hydraulic system.
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Thethi, Ricky, Dharmik Vadel, Mark Haning, and Elizabeth Tellier. "Digital innovation in subsea integrity management." APPEA Journal 60, no. 1 (2020): 215. http://dx.doi.org/10.1071/aj19123.

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Since the 2014 oil-price downturn, the offshore oil and gas industry has accelerated implementation of digital technologies to drive cost efficiencies for exploration and production operations. The upstream offshore sector comprises many interfacing disciplines such as subsurface, drilling and completions, facilities and production operations. Digital initiatives in subsurface imaging, drilling of subsea wells and topsides integrity have been well publicised within the industry. Integrity of the subsea infrastructure is one area that is currently playing catch up in the digital space and lends itself well for data computational efficiencies that artificial-intelligence technologies provide, to reduce cost and lower the risk of subsea equipment downtime. This paper details digital technologies employed in the area of subsea integrity management to meet the objectives of centralising access to critical integrity data, automating workflows to collect and assess data, and using machine learning to perform more accurate and faster engineering analysis with large volumes of field-measured data. A comparison of a typical subsea field is presented using non-digital and digital approaches to subsea integrity management (IM). The comparison demonstrates where technologies such as digital twins for dynamic structures, and auto anomaly detection by using image recognition algorithms can be deployed to provide a step change in the quality of subsea integrity data coming from field. It is demonstrated how the use of a smart IM approach, combined with strong domain knowledge in subsea engineering, can lead to cost efficiencies in operating subsea assets.
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Gao, Pan, Keliang Yan, Mingchen Ni, Xuehua Fu, and Zhihui Liu. "A Dynamic Model for Continuous Lowering Analysis of Deep-Sea Equipment, Based on the Lumped-Mass Method." Applied Sciences 10, no. 9 (May 2, 2020): 3177. http://dx.doi.org/10.3390/app10093177.

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The installation of subsea equipment is a critical step in offshore oil and gas development. A dynamic model to evaluate the lowering process is proposed. The cable–payload system is discretized as a series of spring dampers with the lumped-mass method. For the first time, not only the lowering velocity but also the rope’s structural damping and the nonlinear loads, such as drag force and snap load, are considered. The lowering velocity of the cable is considered through a variable-domain technique. Snap loads are considered by setting the internal forces in the elements to be zero when the cable slacks. A series of simulations reveals that the lowering velocity has great effects on the dynamic force in the cable. However, the structural damping of the cable has little effect on the system response. The snap load may occur in the cable when subjected to rapid downward heave motion, and decreases with the lowered depth increasing. The cable stiffness affects the system’s resonance depth, but has little effect on the peak dynamic force. The present work should be a valuable reference for future subsea equipment installation analysis.
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Dissertations / Theses on the topic "Subsea pipelaying; Dynamic analysis"

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Chang, Yŏng-sik. "Fluid loading and hydro-elastic response of towed pipelines." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243278.

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Book chapters on the topic "Subsea pipelaying; Dynamic analysis"

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Bai, Qiang, and Yong Bai. "Cross-Sectional and Dynamic Analyses of Flexible Pipes." In Subsea Pipeline Design, Analysis, and Installation, 579–98. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-386888-6.00025-0.

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Conference papers on the topic "Subsea pipelaying; Dynamic analysis"

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da Silva, Danilo Machado Lawinscky, Carl Horst Albrecht, Breno Pinheiro Jacob, Isaias Quaresma Masetti, Claudio Roberto Mansur Barros, and Arthur Curty Saad. "Subsea Pipelaying Simulation by the “Situa-Petropipe” Software: A User Friendly Alternative." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64251.

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Currently, Petrobras (the Brazilian state oil company) performs numerical simulations of pipelaying operations employing commercial software, such as OffPipe [1]. However, such tools presents restrictions/limitations related to the user interface, model generation and analysis formulations. These limitations hinder its efficient use for analyses of installation procedures for the scenarios considered by Petrobras, using the BGL-1 barge (owned by Petrobras) or other vessels, considering for instance particular types of stingers depending on depth and pipeline, with different lengths and geometries adapted to certain laying conditions in S-Lay procedures. Therefore, the objective of this work is to present the development and application of a tailored, in-house non-commercial computational tool in which the modules follow Petrobras users’ specifications, in order to overcome the limitations for specific needs and particular scenarios in the simulation of several types of pipeline procedures. Such tool, called SITUA-PetroPipe, presents a friendly interface with the user, for instance allowing the complete customization of the configuration of laybarge and stinger rollers. It also includes novel analysis methods and formulations, including the ability of coupling the structural behavior of the pipe with the hydrodynamic behavior of the vessel motions under environmental conditions.
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Koo, Bonjun, Qin Tu, Jiaqi Wang, and Sachin Mathakari. "Vessel/Stinger/Pipeline Fully Coupled Analysis for Pipelaying Operation." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18857.

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Abstract During pipelaying operations, dynamic performance of the stinger due to vessel motion has a strong impact on the stinger capacity estimation. However, the conventional stinger structural design is based on the maximum load on the roller boxes corresponding to a target top tension value. In addition, the installation analysis uses the uncoupled vessel motion Response Amplitude Operators (RAOs) to calculate the motion induced loads on the stinger and the pipeline. Since the maximum loads on the stinger are conservatively estimated by linearly superimposing maximum forces from different loading conditions, the conventional design and analysis approach leads to either over-design of the stinger structure or underestimation of the stinger capacity. To improve conventional pipelaying design and analysis methodologies, a time domain vessel/stinger/pipeline Fully Coupled Analysis (FCA) is presented in this study. The new analysis procedure significantly improved the stinger operation limit compared to the conventional design and analysis procedure.
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Han, Duanfeng, Kuo Huang, Yingfei Zan, Lihao Yuan, and Zhaohui Wu. "Dynamic Analysis on Critical Responses of Pipeline and Cable During Pipeline End Termination Installation." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18723.

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Abstract In order to figure out the dynamic characteristics of the pipeline and cable during pipeline end termination (PLET) installation based on S-laying, numerical simulation is carried out based on a practical operation project performed at Liwan oil and gas fields in the South China Sea. Four scenarios are selected from the PLET installation process in sequence for simulation. Critical responses of the pipeline and the cable in different scenarios of the operation are analyzed in this paper with a coupled model using RIFLEX module of SIMA software. Both the pipeline and the cable are modeled by the finite element method, and the pipelaying vessel is controlled by a dynamic positioning system. The simulation results are validated by the commonly used OrcaFlex software. The critical responses analyzed include static configuration, time-domain variation of axial tension at the top of the cable and bending moment variation near the touchdown point (TDP) of the pipeline. Furthermore, the time-domain variation of the tension at the top of the cable under different wave and current directions are also compared and analyzed, in order to study the effect of sea environment on the pipeline and cable during PLET installation operation. The results show that the responses of pipeline and cable vary in different operation scenarios, and the sea environment has remarkable effect on the pipeline and cable. The study in this paper is of value to the design of PLET installation based on pipelaying and can help predict the response of pipeline and cable during the operation.
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Zeitoun, Hammam O., Knut To̸rnes, John Li, Simon Wong, Ralph Brevet, and John Willcocks. "Advanced Dynamic Stability Analysis." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79778.

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Several design approaches can be used to analyse the stability of subsea pipelines [1]. These design approaches vary in complexity and range between simple force-balance calculations to more comprehensive dynamic finite element simulations. The latter may be used to more accurately simulate the dynamic response of subsea pipelines exposed to waves and steady current kinematics, and can be applied to optimise pipeline stabilisation requirements. This paper describes the use of state-of-the-art transient dynamic finite elements analysis techniques to analyse pipeline dynamic response. The described techniques cover the various aspects of dynamic stability analysis, including: • Generation of hydrodynamic forces on subsea pipelines resulting from surface waves or internal waves. • Modelling of pipe-soil interaction. • Modelling of pipeline structural response. The paper discusses the advantages of using dynamic stability analysis for assessing the pipeline response, presents advanced analysis and modelling capabilities which have been applied and compares this to previously published knowledge. Further potential FE applications are also described which extends the applicability of the described model to analyse the pipeline response to a combined buckling and stability problem or to assess the dynamic response of a pipeline on a rough seabed.
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Yan, Qu, Guo Hong, Zhang Lei, Yuan Zhenqin, and Li Juyue. "Extreme and Fatigue Analysis of a Dynamic Subsea Power Umbilical." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95123.

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Abstract This paper presents an analysis procedure and results of extreme loading effect and fatigue damage of a dynamic subsea power umbilical. The umbilical was proposed by Hengtong submarine power cable Co., Ltd intended for a FPSO in south China sea at a water depth of 400 m. The umbilical cross section consists of three copper conductor strands and two layers of steel amour wires. A pliant wave configuration is used to accommodate large offset of the FPSO in the harsh environmental condition. Orcaflex is used to verify the tension and curvature of the umbilical in extreme condition against the umbilical capacity curve. UFLEX is used to estimate the mechanical properties and local stress of the umbilical. Fatigue damage is estimated by using results from the global analysis and local stress analysis. The results show that the umbilical cross section design satisfices the acceptance criteria for both extreme and fatigue damage.
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Liu, Zhenhui, Ragnar Igland, Sindre Bruaseth, and Luca Ercoli-Malacari. "Dynamic Analysis of a Subsea Spool Under Dropped Container Impact Loads." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18578.

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Abstract A rigid subsea spool is used to connect the riser of a jacket platform to oil export pipeline in Johan Sverdrup oil field. The location is within the lifting zones of the platform. Consequently, the dropped object hazard has potential high risk and needs to be checked. This paper presents a numerical model on accessing the structural dynamics of subsea spool under the dropped container impact loads by using de-coupled local and global model. The impact impulse was obtained from local impact analysis by Abaqus Explicit solver, in which deformations from container and pipeline are both captured. The global model was built by using inhouse program utilizing ANSYS APDL macros. A simple input file is only needed for end users. The nonlinear pipe and soil interaction is included in a simplified manner. The model comprises of static and dynamic analysis parts. The static analysis captures the in-place configuration and the functional loads. The dynamic analysis is a restart with inherited stress state from static analysis. The impact impulse was applied by point loads in a certain time range. The nonlinear soil stiffness was approached by spring elements (compression only). The dynamic analysis was done in a longer time, ensuring to capture any dynamic effects. The interface loads at the riser stick-out and riser anchor are both extracted and discussed. Concluding remarks have been made accordingly.
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Olunloyo, Vincent O. S., Charles A. Osheku, and Bayo Y. Ogunmola. "Analysis of Dynamic Stress Propagation in Subsea Pipeline and Flow Line Systems." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57089.

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Offshore pipeline and flow line systems define a variety of subsea architectures associated with Floating Production Storage and Offloading units (FPSOs) or Floating Storage and Offloading units (FSOs) that are usually employed for oil and gas production in deep and ultra deep waters. The design of such transmission facilities, must satisfactorily account for various phenomena such as hydrodynamic wave loading, fluid transport velocity, operating pressure and temperature of the internal fluid as well as limitations imposed by the seabed subsoil layer geotechnical properties. In fact the transverse and longitudinal dynamic responses of these pipeline and flow line systems are strongly modulated by these effects. In this paper, the effect of transverse and longitudinal vibrations on the dynamic stresses induced by the fluid flow, is studied with special reference to onset of buckling or bursting of such pipes. For this purpose, an offshore pipeline is idealized as a fluid conveying elastic beam on an elastic foundation. In particular, by employing integral transforms, an analytic solution for the induced stresses is computed and simulated for design applications while comparison with corresponding formulae currently in use in the field is also carried out.
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Zhu, Jiayong, Andres Hernandez, Ankita Taneja, Bin Zhang, and M. Sam Mannan. "Reliability Analysis of Subsea Separation and Boosting System Using Dynamic Bayesian Network." In Offshore Technology Conference. Offshore Technology Conference, 2017. http://dx.doi.org/10.4043/27848-ms.

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Søfteland, Tor E., Odd V. Skrunes, and Daniel Karunakaran. "Lifting Analysis of Subsea Framework Structures." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23816.

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Installation of subsea structures and equipment involves a lifting operation where the objects are exposed to large hydrodynamic forces when entering the oscillating sea-surface. During deployment, as the structure is lifted through the splash zone, snap forces due to slack or overload due to dynamic forces contribute to the maximum load experienced by the structure over the course of its design lifetime. This paper presents a method of how to verify the structural integrity of a subsea framework including determination of the maximum allowable sea-state in which the structure is safely installed. As well as describing an overall methodology for a subsea lifting analysis, hydrodynamic coefficients for cylinders in the splash zone is provided.
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Rezazadeh, Kosar, Liyun Zhu, Yong Bai, and Liang Zhang. "Fatigue Analysis of Multi-Spanning Subsea Pipeline." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20847.

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Free-span occurs normally in pipeline at uneven seabed, dynamic seabed or pipeline crossing. The analysis of free-span, including static analysis and dynamic analysis, is an important subject in the study of pipeline integrity management. Static analysis of free span for subsea pipeline is to evaluate the stress distribution of spanning pipeline in the ultimate conditions, and qualify the stress with design codes in the engineering analysis. However, dynamic analysis of subsea spanning pipeline is much complicated due to VIV fatigue. In 2006 DNV-RP-F105 suggested a methodology of dynamic analysis for long spanning pipeline with multi-mode responses, but the fatigue analysis method for multi-modes is not detailed. In addition, the fatigue analysis of multi-spanning pipeline is not clear. The gap between the continuous two spans, and the pipe-soil interaction control the fatigue damage of the multi-spanning pipeline. In this paper, a VIV fatigue analysis method for multi-spanning pipeline is suggested based on VIV analysis. In this method, Abaqus FE model is developed first to obtain the stress distribution and the natural frequency of each vibration mode for spanning pipeline on seabed in different configurations with three multi-spans, and then the fatigue analysis of VIV is carried out for the spanning pipeline based on DNV-RP-F105. An example of fatigue analysis for a multi-spanning pipeline is presented; finally, several sensitivity analyses demonstrate the effects of key parameters on the VIV fatigue.
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