The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
Yong Bai - One of the best experts on this subject based on the ideXlab platform.
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Offshore Installation of RTP
Subsea Pipeline Design Analysis and Installation, 2014Co-Authors: Qiang Bai, Yong BaiAbstract:This chapter describes the Offshore Installation of reinforced thermoplastic pipe (RTP), which is a new kind of flexible pipeline and now is being used as transport pipelines in selected Offshore projects. RTP pipe has the characteristics of unique material composition, small bending stiffness, and great nonlinearity. An analytical method based on the catenary theory is introduced to analyze the Installation of RTP. Meanwhile, a nonlinear finite element method is developed to analyze the behavior of RTP during Installation. A sensitivity analyses based on the analytical method and FE simulation is carried out for the RTP behavior by changing control factors including water depth, top laying angle, and submerged weight of RTP and seabed stiffness.
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Offshore Installation of Reinforced Thermoplastic Pipe (RTP)
2012Co-Authors: Yong Bai, Peng ChengAbstract:This paper aims to study the Installation of Reinforced Thermoplastic Pipe (RTP) in Offshore applications. RTP is a flexible pipe which consists of a thermoplastic liner, two-layer reinforcement and a thermoplastic protective outer covering. Thus it can be supplied on long-length coils and installed quickly. Due to RTP’s unique construction, behaviors under axial loading and bending loading are analyzed in advance. A theoretical model is proposed to deal with the configuration and internal loads along the pipeline during the laying process. The total pipeline configuration from the lay-barge to the seabed is divided into two parts: one part suspended in water, the other part laid on the seabed. The effect of seabed stiffness is considered in the model. The continuity of the two parts at touch down point (TDP) is applied as the control condition to get the reliable top tension. A numerical iteration program based on the model is developed to get the pipeline configuration, axial tension and bending moment distribution. The results from the theoretical model show good agreement with the finite element model using ABAQUS.
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Installation and Vessels
Subsea Engineering Handbook, 2010Co-Authors: Yong Bai, Qiang BaiAbstract:The objective of this chapter is to provide a basic understanding of the Installation concepts and vessel requirements for subsea engineering. The topics covered in this chapter are: typical Installation vessels; vessel requirements and selection; Installation positioning; and Installation analysis. Subsea structures are normally transported from onshore to the Offshore Installation site by a transportation barge. Once at the Offshore Installation site, the subsea structure is transferred from the transportation barge to the drilling rig or construction vessels. Drilling vessels are mainly designed for drilling activities, but they are also used for the Subsea Production System (SPS) Installation because of their Installation capacities such as water range, lifting capacity, and positioning capacity. Installation of subsea hardware requires the vessel to keep its position well so that the subsea hardware can be placed onto the target foundation with the required accuracy. Two methods are widely used for subsea hardware Installation: the guideline (GL) method and the guideline-less (GLL) method. Installation analysis is a type of calculation for the validation of lifting capacity, strength capacity for lifting objects and vessel structures, etc. Installation analysis can be divided into two categories based on different phases of Installation engineering: preliminary Installation analysis of the front-end engineering design (FEED) for determining the Installation method, Installation vessels and equipment, as well as the relevant Installation duration and cost estimations, and detailed Installation analysis of the engineering design with the goal of developing and Installation procedure and relevant Installation drawings.
Qiang Bai - One of the best experts on this subject based on the ideXlab platform.
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Offshore Installation of RTP
Subsea Pipeline Design Analysis and Installation, 2014Co-Authors: Qiang Bai, Yong BaiAbstract:This chapter describes the Offshore Installation of reinforced thermoplastic pipe (RTP), which is a new kind of flexible pipeline and now is being used as transport pipelines in selected Offshore projects. RTP pipe has the characteristics of unique material composition, small bending stiffness, and great nonlinearity. An analytical method based on the catenary theory is introduced to analyze the Installation of RTP. Meanwhile, a nonlinear finite element method is developed to analyze the behavior of RTP during Installation. A sensitivity analyses based on the analytical method and FE simulation is carried out for the RTP behavior by changing control factors including water depth, top laying angle, and submerged weight of RTP and seabed stiffness.
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Installation and Vessels
Subsea Engineering Handbook, 2010Co-Authors: Yong Bai, Qiang BaiAbstract:The objective of this chapter is to provide a basic understanding of the Installation concepts and vessel requirements for subsea engineering. The topics covered in this chapter are: typical Installation vessels; vessel requirements and selection; Installation positioning; and Installation analysis. Subsea structures are normally transported from onshore to the Offshore Installation site by a transportation barge. Once at the Offshore Installation site, the subsea structure is transferred from the transportation barge to the drilling rig or construction vessels. Drilling vessels are mainly designed for drilling activities, but they are also used for the Subsea Production System (SPS) Installation because of their Installation capacities such as water range, lifting capacity, and positioning capacity. Installation of subsea hardware requires the vessel to keep its position well so that the subsea hardware can be placed onto the target foundation with the required accuracy. Two methods are widely used for subsea hardware Installation: the guideline (GL) method and the guideline-less (GLL) method. Installation analysis is a type of calculation for the validation of lifting capacity, strength capacity for lifting objects and vessel structures, etc. Installation analysis can be divided into two categories based on different phases of Installation engineering: preliminary Installation analysis of the front-end engineering design (FEED) for determining the Installation method, Installation vessels and equipment, as well as the relevant Installation duration and cost estimations, and detailed Installation analysis of the engineering design with the goal of developing and Installation procedure and relevant Installation drawings.
Shang Jing-hong - One of the best experts on this subject based on the ideXlab platform.
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Construction difference analysis of Offshore wind power project
Applied Science and Technology, 2010Co-Authors: Shang Jing-hongAbstract:There are rich wind energy resources in our country.As a new industry of wind power,Offshore wind power is beginning lately,and implementing difficultly.Our research comes from Offshore wind power demonstration of Bohai supported by CNOOC.Main analysis and study were done about wind power land fabrication,tolerance control,corrosion control,Offshore transportation,lifting Offshore Installation,and so on.Compared with land wind power,we can find differences and solutions,so as to avoid project implementation risk and reduce investment cost,which can provide references for construction project of Offshore wind power.
Rhona Flin - One of the best experts on this subject based on the ideXlab platform.
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emergency decision making in the Offshore oil and gas industry
Human Factors, 1996Co-Authors: Rhona Flin, Georgina Slaven, Keith StewartAbstract:In July 1988, Occidental Petroleum (Caledonia) Ltd.'s North Sea oil platform, Piper Alpha, exploded with the loss of 167 lives. Although rare, such industrial disasters demonstrate that the task facing managers at high-hazard sites in an emergency is complex and characterized by time pressure, uncertainty, and danger. In this paper we examine the decision making required in a crisis by the Offshore Installation manager (OIM) and his or her emergency response team on an Offshore oil Installation. The paper summarizes the findings of a study in which we examined the selection and training of OIMs for crisis management and interviewed OIMs who had dealt with a real Offshore emergency. The characteristics of the decision making that the on-scene commander requires in an Offshore crisis are discussed in terms of recent developments in theories of naturalistic decision making, with particular reference to recognition-primed decision making.
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MANAGING Offshore InstallationS
1993Co-Authors: Rhona Flin, G SalvenAbstract:There are no standard selection or training procedures for the Offshore Installation Manager (OIM) post, but in the new UK Safety Case regime, employers of OIMs will now be required to demonstrate that they have assessed the competence of their OIMs to manage Offshore emergencies. To date, there has been no published research into this unusual and important management position. This article presents a summary of the results from a survey of OIMs carried out in the summer of 1991. The project aim was to collect descriptive data on the career paths and training experiences of existing OIMs and to examine their perceptions of the responsibilities, demands and satisfactions of the OIM's job. The survey team distributed 337 questionnaires to OIMs in 15 operating and 19 drilling/support companies. OIMs completed it anonymously. A total of 134 questionnaires were returned: 51 percent from production Installations, 40 percent from drilling rigs and 9 percent from service Installations.
Wl Wil Kling - One of the best experts on this subject based on the ideXlab platform.
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Market value of wind power
2013Co-Authors: J.e.s. De Haan, Shoeb, H.m. Lopes Ferreira, Wl Wil KlingAbstract:Variability and predictability constraints of wind hinder the cost-efficient integration of wind power generation into power markets. Within the framework of EIT KIC INNOENERGY Offwindtech project, a ‘Market Value’ tool is developed. Here, the market value of wind power generation can be assessed with respect to its wind site and the respective power market it is integrated in. A case study is introduced to compare the potential market value of different wind sites (Offshore/onshore) and of different power market concepts (day ahead/intra-day). It is found that the relative market value of wind power does not significantly differ between its diverse conditions. Nevertheless, when considering the costs of wind power generation, coastal wind power generation, to be sold in intra-day markets, has the largest potential to be cost-efficient. Future reduction of Offshore Installation and maintenance cost could further increase the market value/competition of Offshore wind power. The difference of predictability accuracy between onshore and Offshore wind power generation has negligible impact on the results
