Download or read book Calibration of Deterministic Parameters for Reassessment of Offshore Platforms in the Arabian Gulf Using Reliability based Method written by Hassan Zaghloul and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] The Arabian Gulf oil and gas production reserves have made it one of the world's strategic producers since early 1960s, with many of the existing platforms stretched beyond their original design life. Advances in drilling technology and reservoir assessments have extended the requirement for the service life of those existing platforms even further. Extension of the life span of an existing platform requires satisfactory reassessment of its various structural components, including piled foundations. The American Petroleum Institute Recommended Practice 2A (API RP2A) is commonly used in the Arabian Gulf for reassessment of existing platforms. The API guidelines have been developed for conditions in the Gulf of Mexico, the waters off Alaska and the Pacific and Atlantic seaboards of the USA. However, the Arabian Gulf conditions are fundamentally different to those encountered in US waters. Hence, there is a need to develop guidelines for reassessment of existing offshore structures to account for the specific conditions of the Arabian Gulf. This thesis performs statistical analyses on databases collected during this research from existing platforms to calibrate relevant load and resistance factors for the required guidelines. The developed guidelines are based on established approaches used in developing international codes and standards such as API RP2A-LRFD. The outcome of this research revolves around the following three main issues: 1. Calibration of resistance factors for axial capacity of piles driven in the carbonate soils API RP2A (1993, 2000) does not quantify limiting soil parameters for piles driven in carbonate soils and provides a single factor to predict the capacity of piled foundations. This research identifies a set of limiting engineering parameters and calibrates corresponding capacity reduction factors to predict axial capacity of driven piles in the carbonate soils of the Arabian Gulf. ... This contrasts with Section 'R' of API RP2A (1993, 2000), which focuses on extreme environmental conditions when performing reassessment. The probabilities of failure considered in this research do not include errors and omissions (controlled by quality assurance procedures) or material deterioration (controlled by choice of materials, detailing, protective devices, and inspection and repair procedures) or reliability-based maintenance. Addressing operating overload conditions requires attending to two issues, namely the capacity of piles driven in carbonate soils and OALL, which have been addressed in this research. The operational overload situation is likely to occur during shutdown condition or during drilling or work over activities where significant OALL are usually applied to platform decks. Such operational overload can be managed by placing signs at various open areas on the platform nominating the maximum load limits (kPa), introducing procedures that ensure that maximum load limits are not exceeded during operation and management of human behavior by reinforcing the importance of following the procedures. The outcomes of this research are expected to have a profound influence on reassessment of existing platforms in the Arabian Gulf.
Download or read book Calibration of Deterministic Parameters Reassessment of Offshore Platforms in the Arabian Gulf written by Hassan Zaghloul and published by Universal-Publishers. This book was released on 2011-04-18 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arabian Gulf oil and gas production reserves have made it one of the world's strategic producers since the early 1960s, with many of the existing platforms stretched beyond their original design life. Advances in drilling technology and reservoir assessments have extended the requirement for the service life of those existing platforms even further. Extension of the life span of an existing platform requires satisfactory reassessment of its various structural components, including piled foundations. The American Petroleum Institute Recommended Practice 2A (API RP2A) is commonly used in the Arabian Gulf for reassessment of existing platforms. The API guidelines have been developed for conditions in the Gulf of Mexico, the waters off Alaska and the Pacific and Atlantic seaboards of the USA. However, the Arabian Gulf conditions are fundamentally different to those encountered in US waters. Hence, there is a need to develop guidelines for reassessment of existing offshore structures to account for the specific conditions of the Arabian Gulf. This thesis performs statistical analyses on databases collected during this research from existing platforms to calibrate relevant load and resistance factors for the required guidelines. The developed guidelines are based on established approaches used in developing international codes and standards such as API RP2A-LRFD. The outcome of this research revolves around the following three main issues: 1. Calibration of resistance factors for axial capacity of piles driven in the carbonate soils 2. Development of open area live loads (OALL) on offshore platforms 3. Effect of extreme storm conditions on the reliability of existing platforms in the Arabian Gulf The outcomes of this research are expected to have a profound influence onreassessment of existing platforms in the Arabian Gulf.
Download or read book Environmental Load Factors and System Strength Evaluation of Offshore Jacket Platforms written by Zafarullah Nizamani and published by Springer. This book was released on 2015-01-27 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a study for the determination of environmental load factors for Jacket Platforms in Malaysia and a methodology to determine the life extension of aging platforms. The simplified methods described here could be used for determining not only structural reliability but also safety factors. Its content is particularly interesting to design and maintenance engineers who are working in offshore or onshore industry.
Download or read book Reliability based Design of Offshore Mooring Systems written by Mir Emad Mousavi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study proposes new methods for the reliability-based design of structural systems, with emphasis on offshore mooring systems. After a brief introduction to the mooring systems, two main objectives are discussed in this dissertation. The first objective is the calculation of the probability of failure of a structural system, which is an important input for a reliability-based design or any quantitative risk assessment. Two different methods are proposed for calculation of the probability of failure: a method based on the Monte Carlo simulations and a method based on the basic rules of probability, which is called the Progressive Reliability Method (PRM). Both methods are flexible to the definition of system failure. For example, the probability of a serviceability or ultimate-strength failure can be assessed using any of the two methods. It is shown that the two methods produce similar results, but PRM is preferred because it is exact and usually faster to implement. The second main objective in this dissertation is to develop a method for the optimization of the design of a structural system, given a target probability of failure. In this method, using the structural analysis of a preliminary design, the ratio of the optimal to the preliminary mean capacity of each component, which is called the Optimality Factor, is determined. Two design strategies are considered. First, an optimal design is intended to achieve the maximum system integrity. System integrity is defined as the balanced contribution of system components to its reliability. To quantify the system integrity, the Integrity Index is defined, and its calculation for various systems is discussed. Second, a designated failure scenario is considered, where some components serve as a fuse to protect some other components. This design strategy is especially applicable to mooring systems with drag anchor foundations because normally, if a drag anchor is pulled out from the seabed, it can cause significant damages to nearby subsea facilities. Using the rules of probability, a method is then developed to calculate the optimality factor of each component. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149292
Download or read book Reliability of Dynamically Sensitive Offshore Platforms Exposed to Extreme Waves written by Jalal Mirzadeh and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing interest in the use of offshore platforms in deeper waters and harsher environments, as well as the desire to extend the operation of existing structures beyond their design lives, is increasing attention on the assessment of their dynamic response and their failure conditions under extreme storm loading. There are a large number of factors influencing the performance of dynamically sensitive platforms, but a major issue is how to include all of the irregularity, directionality and nonlinearity that ocean waves cause on their loading. Therefore, the role each plays in the assessment of dynamically sensitive structures under extreme loads is investigated systematically in this thesis. The aim is to develop practical methods to estimate extreme response and the probability of failure of dynamically sensitive offshore structures in a given sea-state. The directionality and nonlinearity of ocean waves has been captured in this thesis by extending the formulations of the NewWave and Constrained NewWave theories. NewWave is a deterministic method that accounts for the spectral composition of the sea-state, and can be used as an alternative to both regular wave and full random time domain simulations of lengthy time histories. Based on this theory a predetermined crest height and the surface elevation around the crest during an extreme event can be theoretically simulated. Constrained NewWave, which is generated by mathematically constraining a NewWave within a random time series, allows the irregularity of ocean waves to be considered. These wave theories have been extended in this thesis to include 2nd order and directionality effects, and their formulations have been written into a new Fortran code for calculation of the water surface and water particle kinematics. The effects of irregularity, directionality and nonlinearity of ocean waves on dynamically sensitive structures are then shown for an example mobile jack-up drilling platform. The sample jack-up platform is modelled in the USFOS software, and includes the effects of material and geometrical nonlinearities as well as spudcan-soil-structure nonlinear interactions. Finally, based on structured application of multiple Constrained NewWaves in combination with the Monte Carlo method, a framework is proposed to estimate the extreme response and the failure probability of dynamically sensitive offshore structures exposed to a given duration of the one extreme sea-state. The results demonstrate that in an extreme event the irregularity, directionality and nonlinearity of ocean waves have considerable effects on the overall performance of the sample jack-up platform. It is shown that the extreme response and the probability of failure of the sample jackup are not only governed by the maximum crest elevation but also depend on the random background of ocean waves. In addition, it is indicated that the inclusion of the directionality effects of ocean waves results in reductions in the extreme response and failure rate of the sample jack-up platform. On the other hand, the nonlinearity effects cause additional energy in low and high frequencies and raise the crest height, which increases the extreme response of the sample jack-up platform. The methods developed in this thesis have application to any dynamically sensitive structure and will help reduce the level of uncertainty in predicting their extreme response or failure probability. This may help in extending their operational conditions, say into deeper waters and harsher sea-states, or in extending their operational life.
Download or read book Improving Reliability Assessment of Offshore Structures Using Bayesian Methods written by Hadi Khalili and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Design Reliability Handbook written by Efstratios Nikolaidis and published by CRC Press. This book was released on 2004-12-22 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers in the engineering industry and academia are making important advances on reliability-based design and modeling of uncertainty when data is limited. Non deterministic approaches have enabled industries to save billions by reducing design and warranty costs and by improving quality. Considering the lack of comprehensive and defini
Download or read book Application of Risk Analysis to Offshore Oil and Gas Operations written by Felix Y. Yokel and published by . This book was released on 1985 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book Handbook of Offshore Engineering 2 volume Set written by Subrata Chakrabarti and published by Elsevier. This book was released on 2005-08-19 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Each chapter is written by one or more invited world-renowned experts * Information provided in handy reference tables and design charts * Numerous examples demonstrate how the theory outlined in the book is applied in the design of structures Tremendous strides have been made in the last decades in the advancement of offshore exploration and production of minerals. This book fills the need for a practical reference work for the state-of-the-art in offshore engineering. All the basic background material and its application in offshore engineering is covered. Particular emphasis is placed in the application of the theory to practical problems. It includes the practical aspects of the offshore structures with handy design guides, simple description of the various components of the offshore engineering and their functions. The primary purpose of the book is to provide the important practical aspects of offshore engineering without going into the nitty-gritty of the actual detailed design. · Provides all the important practical aspects of ocean engineering without going into the 'nitty-gritty' of actual design details· · Simple to use - with handy design guides, references tables and charts· · Numerous examples demonstrate how theory is applied in the design of structures
Download or read book Subsea Engineering Handbook written by Yong Bai and published by Gulf Professional Publishing. This book was released on 2012-01-13 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsea production systems, overview of subsea engineering, subsea field development, subsea distribution system. Flow assurance and system engineering. Susea structure and equiment. Subsea umbilical, risers and flowlines.
Download or read book IFCEE 2015 written by Magued Iskander and published by . This book was released on 2015 with total page 2845 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Project Management in the Oil and Gas Industry written by Mohamed A. El-Reedy and published by John Wiley & Sons. This book was released on 2016-02-19 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oil and gas projects have special characteristics that need a different technique in project management. The development of any country depends on the development of the energy reserve through investing in oil and gas projects through onshore and offshore exploration, drilling, and increasing facility capacities. Therefore, these projects need a sort of management match with their characteristics, and project management is the main tool to achieving a successful project. Written by a veteran project manager who has specialized in oil and gas projects for years, this book focuses on using practical tools and methods that are widely and successfully used in project management for oil and gas projects. Most engineers study all subjects, but focus on project management in housing projects, administration projects, and commercial buildings or other similar projects. However, oil and gas projects have their own requirements and characteristics in management from the owners, engineering offices, and contractors’ side. Not only useful to graduating engineers, new hires, and students, this volume is also an invaluable addition to any veteran project manager’s library as a reference or a helpful go-to guide. Also meant to be a refresher for practicing engineers, it covers all of the project management subjects from an industrial point of view specifically for petroleum projects, making it the perfect desktop manual. Not just for project managers and students, this book is helpful to any engineering discipline or staff in sharing or applying the work of a petroleum project and is a must-have for anyone working in this industry.
Download or read book Natural Climate Variability on Decade to Century Time Scales written by National Research Council and published by National Academies Press. This book was released on 1996-08-30 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reflects the current state of scientific knowledge about natural climate variability on decade-to-century time scales. It covers a wide range of relevant subjects, including the characteristics of the atmosphere and ocean environments as well as the methods used to describe and analyze them, such as proxy data and numerical models. They clearly demonstrate the range, persistence, and magnitude of climate variability as represented by many different indicators. Not only do natural climate variations have important socioeconomic effects, but they must be better understood before possible anthropogenic effects (from greenhouse gas emissions, for instance) can be evaluated. A topical essay introduces each of the disciplines represented, providing the nonscientist with a perspective on the field and linking the papers to the larger issues in climate research. In its conclusions section, the book evaluates progress in the different areas and makes recommendations for the direction and conduct of future climate research. This book, while consisting of technical papers, is also accessible to the interested layperson.
Download or read book IAEA Safety Glossary written by International Atomic Energy Agency and published by International Atomic Energy Agency. This book was released on 2019-09-17 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IAEA Safety Glossary defines and explains technical terms used in the IAEA Safety Standards and other safety related IAEA publications, and provides information on their usage. The 2018 Edition of the IAEA Safety Glossary is a new edition of the IAEA Safety Glossary, originally issued in 2007. It has been revised and updated to take into account new terminology and usage in safety standards issued between 2007 and 2018. The revisions and updates reflect developments in the technical areas of application of the safety standards and changes in regulatory approaches in Member States.
Download or read book Bridging the Gulf EU GCC Relations at a Crossroads written by Silvia Colombo and published by Edizioni Nuova Cultura. This book was released on 2014-05-27 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relations between the European Union (EU) and the Gulf Cooperation Council (GCC) are at a crossroads. After the derailment of the negotiations for the Free Trade Agreement (FTA) in 2008, the cooperation between the two regional blocs has remained low-key in a number of different areas, while the unprecedented changes that have taken place in North Africa and the Middle East, the common neighbourhood of the EU and the GCC, have not led to a renewed, structured cooperation on foreign and security policy issues. This volume addresses the shortcomings and potential of EU-GCC relations by taking stock of their past evolution and by advancing policy recommendations as to how to revamp this strategic cooperation. In this light, it highlights the areas where greater room for manoeuvre exists in order to enhance EU-GCC relations, discusses the instruments available and sheds light on the features of the regional and international context that are likely to significantly influence the new phase in the mutual relation between the two blocs. The book is the result of the research conducted in the framework of the project ‘Sharaka – Enhancing Understanding and Cooperation in EU-GCC Relations’ co-funded by the European Commission.
Download or read book Giant Oil Fields The Highway to Oil written by Fredrik Robelius and published by . This book was released on 2007-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
