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Master Thesis Alexey Basov.Pdf (1.532Mb) FACULTY OF SCIENCE AND TECHNOLOGY MASTER'S THESIS Study programme/specialisation: 19 Offshore Technology/Marine and Spring / Autumn semester, 20...... Subsea Technology Open/Confidential Author: ………………………………………… Alexey O. Basov (signature of author) Programme coordinator: Professor Dimitrios Pavlou (University of Stavanger) Supervisor(s): Professor Ove Tobias Gudmestad (Unversity of Stavanger) Professor Anatoly B. Zolotukhin (Gubkin Unversity) Title of master's thesis: Conceptual design of the Leningradskoye field development and transportation of produced products Credits: 30 Keywords: Kara Sea, Leningradskoye, Arctic, Arcric Number of pages: …………………65 environment, development analysis, + supplemental material/other: …………1 development schemes, IRGBS, SPS, subsea modules, transportation system, pipeline Stavanger,……………………….June 15, 2019 system, trajectories, routing, trenching, date/year drilling centers, protection system Abstract Since the first oil and gas field was discovered the industry has changed and a lot and new challenges have appeared. While the industry was developing related sciences like geology, geophysics, and others, companies started exploration and development offshore fields and further to the Arctic offshore. The Arctic is the special region where approaches for development and exploitation used elsewhere do not work. A severe weather condition requires a large number of standards both for operations and material selection. Exactly a large number of standards is one of the biggest issues concerning development and operations in Arctic conditions because more than 3 countries have access to this region. This means that we have to develop only one standard system for all countries and companies who would work in this region. Another challenge is product transport because ice covers most of the Arctic area during the winter period and this period could continue for more than half a year. There are a lot of solutions to this problem and some of them are presented in this Master thesis. Also, this master thesis covers such aspects as choosing suitable facilities for the region’s conditions with an explanation of why exactly these types of production units are the best way to develop this field. At the same time, this paper discusses the possible location of these facilities based on technical, economic and environmental sides. 2 Acknowledgments I am very grateful to the University of Stavanger and the Russian Gubkin State University of Oil and Gas for cooperation and the opportunity to learn. This master's work was carried out as part of a joint master's program. Writing this master's thesis would have been impossible without the excellent support provided by my mentor and professor Owe Tobias Gudmestad. He was one of the few who believed in me and supported me in my studies at the University of Stavanger. He always worries and cares about his students. His deep and irreplaceable knowledge in the field of development and development of offshore fields was transferred to students in the most understandable form. His desire to convey this knowledge and classes with students, even outside the school hours, motivated me. I must sincerely thank Professor Anatoly Zolotukhin, thanks to whom I was able to learn to think analytically and innovatively. I am very grateful to Associate Professor Vladimir Balitsky from Gubkin University. Without it, an educational process that meets the requirements of both universities would be impossible. Finally, and most importantly, I would like to thank my family, who gave me great support, believing in me. 3 Content Abstract ......................................................................................................................................................... 2 Acknowledgments ......................................................................................................................................... 3 List of figures ................................................................................................................................................ 5 List of tables .................................................................................................................................................. 6 Chapter 1. Introduction ................................................................................................................................. 7 1.1 Scope of work ......................................................................................................................................... 7 Chapter 2. General information ..................................................................................................................... 9 2.1 Geographic location of Kara Sea ............................................................................................................ 9 2.2 Climatic conditions ............................................................................................................................... 10 2.3 Temperature and salinity of seawater. ................................................................................................... 12 2.4 Currents ................................................................................................................................................. 16 2.5 Icing....................................................................................................................................................... 19 2.6 Seabed profile ........................................................................................................................................ 20 2.7 General information about Leningradskoye field ................................................................................. 21 2.8 Icebergs ................................................................................................................................................. 22 Chapter 3. Selection and location of development facilities ....................................................................... 25 3.1 Gravity based ice-resistant platform ..................................................................................................... 25 3.2 Subsea Production System .................................................................................................................... 28 3.3 Gravity based ice-resistant platform with a subsea production system ................................................. 36 Chapter 4. Transportation system design .................................................................................................... 37 4.1 Types of offshore gas and gas-condensate transportation systems ....................................................... 37 4.1.1 Pipeline transportation system ........................................................................................................... 37 4.1.2 LNG tankers transportation system .................................................................................................... 41 4.1.3 Other transportation systems .............................................................................................................. 43 4.1.4 Summary ............................................................................................................................................ 44 4.2 Pipeline trajectory choosing .................................................................................................................. 44 4.2.1 Trajectory choosing to the Yamal LNG ............................................................................................. 50 4.2.2 Trajectory choosing to the Bovanenkovskoye field ........................................................................... 51 4.2.3 Single path selection........................................................................................................................... 53 4.3 Pipelines design and calculation ........................................................................................................... 53 4.4 Subsea facilities protection from icebergs............................................................................................. 56 Chapter 5. Impact of technical solutions on the environment ..................................................................... 59 Conclusions ................................................................................................................................................. 61 References: .................................................................................................................................................. 62 Appendix A. Solution matrix ...................................................................................................................... 66 4 List of figures Figure 2.1 Location of Kara Sea ...................................................................................................... 9 Figure 2.2 Depth distribution of Kara Sea ..................................................................................... 20 Figure 2.3 Location of Leningradskoye gas-condensate field ....................................................... 21 Figure 2.4 Ice drifting and currents map ....................................................................................... 22 Figure 2.5 Probability of encountering an iceberg within the year on a 25 km×25 km grid cell. 1987-2005 Density distribution ....................................................................................................
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