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Dissertations / Theses on the topic 'Drilling platforms'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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1

Gledhill, Peter L. "Cutting and deployment system development for decommissioning of underwater steel structures." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=196133.

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This thesis was stimulated by the requirement to decommission offshore steel structures in the North Sea Offshore Oil and Gas Industry, but applies worldwide, where Oil and Gas production has ceased. It initially shows the UK Government assessment of the scale of decommissioning in the UKCS where there are several hundred structures with associated pipelines, risers and wellheads that have to be cut into sub-structures and individual pieces and then removed. Factors other than cessation of production drive the sequence and timing of structural decommissioning, such as the price of oil &gas and

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2

McMahon, James S. "DYNAMO systems model of the roll-response of semisubmersibles." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01262010-020130/.

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3

Vant, J. H. B. "Offshore oil : The influence of recruitment, selection and placement on employer attitudes, stability and accident rates in drilling companies." Thesis, Brunel University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381159.

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4

Hull, Alastair M. "A long-term follow-up study of the survivors of the Piper Alpha oil platform disaster." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=202111.

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The long-term psychological effects of surviving a major disaster are poorly understood. A survey of survivors of the Piper Alpha oil platform disaster (1988) was undertaken to examine the role of factors relating to: the trauma; the survivors, and the survivors’ circumstances in relation to long-term outcome. Methods: Ten years after the disaster 78% (46/59) of the survivors were located, and, of these, 72% (33/46) agreed to be participate in a study conducted by questionnaire, diagnostic interview and semi-structured interview. In total, 61% of all survivors participated in this study. A fur

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5

Puskeppeleit, Monika Petra. "Improving telemedicine onboard Norwegian ships and drilling platforms. : A study of intersectoral co-operation in Maritime Medicine." Thesis, Nordic School of Public Health NHV, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:norden:org:diva-3186.

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Background: Using telemedicine to provide health services for seafarers represents a special case of intersectoral co-operation.Since 2006, several North Sea drilling platforms and internationally operating Norwegian merchant ships have usedonboard telemedicine equipment continuously. Experience gained through this new technology has improvedintersectoral co-operation regarding seafarers’ health care. Aim: This study aimed to analyze the need for intersectoral co-operation and networking in maritime medicine by usingtelemedicine equipment at sea. Various Norwegian maritime organizations and in

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6

Liedtke, Eric Arthur. "Effects from uncertainties in bathymetric measurements and variability in topography on computed stability of offshore slopes in deep water /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008380.

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7

Zaghloul, Hassan. "Calibration of deterministic parameters for reassessment of offshore platforms in the Arabian Gulf using reliability-based method." University of Western Australia. School of Mechanical Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0155.

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[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 com

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8

Mukhtasor. "Hydrodynamic modeling and ecological risk-based design of produced water discharge from an offshore platform." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ62454.pdf.

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9

Karamanov, Anton. "Utilization of Horizontal-Axis Tidal Stream Turbines As a Main Power Supply System On Offshore Remote Oil&Gas Platforms." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263161.

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The master's thesis contains 97 pages, 29 tables, 33 figures and 43 sources of literature. The paper presents a study on increasing the efficiency of the power supply of remote offshore oil and gas facilities through the use of horizontal-axial tidal stream turbines. A general theoretical description of floating semi-submersible drilling rigs and a more detailed description of semi-submersible drilling unit 6000/200 type "Shelf" are presented. A theoretical description of various devices that transform the kinetic energy of water into electric power is also presented, and horizontal-axial tida

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10

Ciembronowicz, Katherine T. "The relationship of initial flooding depositional facies to global sea level and climate on the Marion Plateau, NE Australia (ODP Leg 194)." [Tampa, Fla] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0001936.

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11

Oliveira, Gabriel Merhy de. "Modelagem da propagação de pressão no reinício do escoamento de fluidos de perfuração não gelificados." Universidade Tecnológica Federal do Paraná, 2011. http://repositorio.utfpr.edu.br/jspui/handle/1/302.

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Prêmio Petrobrás de Tecnologia, CNPq<br>O reinício do escoamento do fluido de perfuração é um grande problema em águas profundas e em poços de grande extensão como os do pré-sal. Dependendo da geometria do poço e de propriedades do fluido, picos de pressão significativos podem ocorrer comprometendo a estrutura do poço. O presente trabalho apresenta um modelo matemático para o escoamento compressível e transitório com o objetivo de prever a transmissão de pressão ao longo do poço e os picos de pressão durante o reinício do escoamento. O modelo baseia-se nas equações de conservação da massa e da

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12

Galdino, Jonathan Felipe. "Modelagem da propagação de pressão em fluidos de perfuração durante kick de gás." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2663.

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Petrobras<br>No processo de perfuração de poços de petróleo e gás o controle da pressão é uma importante tarefa. Se a pressão no interior do poço estiver abaixo da pressão de poros, um influxo da formação pode ocorrer, fenômeno denominado de kick. Se o influxo não for controlado pode ocorrer um fluxo descontrolado da formação para a superfície (blowout). As pressões de fechamento são utilizadas para calcular a pressão do reservatório, entretanto, o caráter viscoplástico do fluido de perfuração atenua as pressões medidas. No presente trabalho, é apresentada uma modelagem matemática e numérica p

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13

Hatlevik, Edvin. "Heave disturbance attenuation in managed pressure drilling from a floating platform using model predictive control." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25958.

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Since a large part of the Norwegian oil shelf has been active for over a generation, many fields begin to be depleted and the drilling operations requires tight down hole pressure margins. And by improving the pressure control for the drilling operations former undrillable wells becomes drillable. Which will make the the oilfields more profitable, and extend their life expectancy. It will also make drilling operations safer by preventing kicks and preventing environmental damages caused by mud leaking into the pore space.\\\\One of the most critical phases when drilling from a floating drillin

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14

Giacometti, Massimiliano. "Riproducibilità delle condizioni operative di meccanismi articolati e loro collaudo." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425066.

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The work carried out is about two main projects: a technological demonstrator of an autonomous driller called "Guided Mole Demonstrator" for scientific exploration of Mars subsoil, and a robotic platform with 3 degrees of freedom based on the relative motion of links with inclines for motion simulations or pointing purposes.

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15

Spier, Chelsea L. "The fate and distribution of subsurface hydrocarbons released during the 2010 MC252 oil spill in deep offshore waters of the Gulf of Mexico." Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/816.

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The explosion of the Deepwater Horizon oil platform on April 20, 2010 resulted in the second largest oil spill in history. In this study, the distribution and chemical composition of hydrocarbons within a 45 km radius of the blowout was investigated. A complete set of hydrocarbon data were acquired from the National Oceanic and Atmospheric Administration (NOAA) and from BP, including data from 16 research missions collected over eight weeks. The distribution of hydrocarbons was found to be more dispersed over a wider area in subsurface waters than previously predicted or reported. Several hydr

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16

Le, Marchand Eric. "Contribution a l'etude experimentale de l'amortissement en pilonnement des plateformes semisubmersibles." Nantes, 1987. http://www.theses.fr/1987NANT2047.

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Etude purement experimentale sur une maquette au quarantiere d'un ponton cylindrique de section rectangulaire, avec une analyse des amortissements a des nombres de reynolds plus eleves et varies que ceux etudies jusqu'a present. Constatation d'une nette dependance, aux faibles nombres de keulegan, de l'amortissement de trainee du parametre de viscosite beta. Forte influence de la geometrie des aretes longitudinales du ponton. Effet de la superposition d'une houle monochromatique au mouvement de pilonnement

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17

Biondi, Esteban L. "Organizational factors in the reliability assessment of offshore systems." Thesis, 1998. http://hdl.handle.net/1957/26761.

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The reliability of ocean systems is dependent on organizational factors. It has been shown that low probability / high consequence system failures are overwhelmingly induced by organizational factors. However, no methodology is yet widely accepted for the evaluation of this phenomenon or its accurate quantification. A qualitative complementary approach is proposed based on the CANL (Complex Adaptive Non-Linear) model. In the first part, the understanding of organizational processes that affect reliability is sought. The approach is applied to several case studies based on published information

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18

Pula, Ravi Chandra. "An integrated system for fire and explosion consequence analysis of offshore process facilities /." 2005.

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19

Raie, Mohammad Sayfolah 1977. "A computational procedure for simulation of torpedo anchor installation, set-up and pull-out." 2009. http://hdl.handle.net/2152/18387.

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Torpedo-shaped anchors serve as foundations for risers and floating structures in the deep-water marine environment. Such cone-tipped, cylindrical steel pipes, ballasted with concrete and scrap metal, penetrate the seabed by the kinetic energy they acquire during free fall. Estimation of the embedment depth is a crucial part of the design process in that the pull-out capacity is strongly dependent on the strength of the surrounding soil. This dissertation presents the development of a procedure based on a computational fluid dynamics (CFD) model for the prediction of the embedment depth of tor

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