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Dissertations / Theses on the topic 'Drilling rigs'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Majeed, Fesmi Abdul. "Analysis and control of rotary drilling rigs." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12559.

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The objective of this research is to analyze and develop controller to minimize vibrations of the drill string in rotary drilling rigs. The rotary drilling process is affected by many vibrations which adversely affect the drilling efficiency. The vibrations are mainly classified into three: lateral, tosional and axial. Among the vibrations, lateral vibrations are the most destructive. The research conducted a detailed analysis on lateral vibrations. Bent drill string and unbalanced drill bit was found to be its major causes; and the resultant phenomenon was known as drill bit whirl. Practical

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2

Hamodi, Hussan. "Reliability and Life Cycle Cost Modelling of Mining Drilling Rigs." Doctoral thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17353.

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In the context of mining, drilling is the process of making holes in the face and walls of underground mine rooms, to prepare those rooms for the subsequent operation, which is the charging process. Due to the nature of the task, drilling incurs a high number of drilling rig failures. Through a combination of a harsh environment (characterised by dust, high humidity, etc.), the operating context, and reliability and maintainability issues, drilling rigs are identified as a major contributor to unplanned downtime.The purpose of the research performed for this thesis has been to develop methods

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3

Pelley, Dean. "Performance of twin falls davit & lifeboat evacuation system in extreme seas /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,169027.

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4

Larsson, Rickard. "Development and application of a tool for assessing the impact of failure modes on performance of underground drill rigs." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93415.

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Trends such as increasing awareness of sustainable production, shorter product life cycles and personalised products create challenges for the mining industry. A solution to these challenges may be a functional product business model, where the provider sells the hardware’s function under a service contract and is responsible for delivering the combination of hardware and services over the duration of the contract. Under a functional product contract, it is of great importance to predict the availability performance of the hardware. For the mining company to strengthen its competitiveness even

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5

Olsson, Mikael, and Anders Söderberg. "Design guideline for audible warning signal and determination of sound pressure characteristics : Second version." Thesis, Örebro universitet, Akademin för naturvetenskap och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-19412.

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Today Atlas Copco Rock Drills AB hasn’t got any method to determine how many warning alarms they need on their machines and how they should be mounted to use their full potential. At the moment a travel alarm is usually placed in the front of the machine and a reverse alarm in the back. Then a measurement of the sound pressure level around the machine is performed to see if it is enough to pass the limit according to different ISO-standards. Otherwise they have to mount some extra alarms and then do the measurements again until the standards are fulfilled. The aim of this thesis work is to dev

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6

Volec, Martin. "Malá vrtná souprava pro vrtání studní." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232188.

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The aim of this thesis is the structural design small drilling rigs for drilling wells. Drilling rig will be used for drilling wells up to 200 mm diameter rotary drilling technology with irrigation water. The first part is a literature search of small drilling rigs. In the second part, then custom design a small drilling rig.

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7

Junin, Radzuan bin. "Downhole disposal of oil-rig drill cuttings." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339712.

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8

Che, Kar Suriani Binti. "Oscillatory behaviour and strategy to reduce drilling vibration." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15831.

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Drill String dynamic behaviour during the oil drilling operation, was a major source for the failure of the Bottom Hole Assembly (BHA). The behaviour produced torsional vibration, which underpins the stick slip phenomena. Besides threatening the safety of the oil drilling process, such failure cause interruptions in the drilling operations and incurred high maintenance cost to the oil drilling company. This issue can be resolved with the implementation of the optimum control mechanism while operating the drill string. In this research, an optimum control mechanism was proposed to suppress the

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9

Hed, Maria. "Underhåll av automatiserade borriggar." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70186.

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I det moderna samhället utgör metaller en viktig del. Boliden Minerals AB är en stor aktör inom gruvindustrin och är verksamma i Sverige, Finland, Norge och på Irland. I en komplex bransch med varierande arbetsförhållanden och farliga miljöer för de som arbetar i gruvorna är säkerhet en grundpelare. Automation och underhåll är viktiga faktorer för en ökad säkerhet, produktivitet och driftsäkerhet. För att utvinna mineraler ur berg är borrning och sprängning en viktig del i processen. Gruvbrytning omfattar dagbrott och underjordsbrytning och i det här arbetet har borrningsprocessen vid underjor

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10

Martinovich, Tony. "Factors influencing the incidence rates of injuries and accidents among seafarers and rig workers providing support to the WA offshore oil and gas industry." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/1084.

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The aim of this study was to identify, discuss and make recommendations regarding causal factors associated with injuries and accidents among seafarers and rig workers providing support to the WA offshore oil and gas industry. These incidents cause significant personal and economic burdens for employees, employers and the community in general. A sample of 484 participants were recruited from a workforce of 9800 employees (approximately 5%). Participants were stratified into 2 cohorts; those who had suffered injury (286 – study group) and those who had not (198 - controls). Data from the study

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11

de, Brun Mangs Jonathan, and Mikael Tillquist. "Evaluation of a Programmable Hydraulic Valve for Drill Rig Applications." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148675.

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The increase of intelligent systems can be seen in every industry. Integrated sensors and processors are used with internal control systems to create better performance for mobile hydraulic applications. The report describes how an evaluation was made to see if the productivity of a drill rig could be increased. This was done by implementing a programmable hydraulic valve to control the hydraulic drilling functions. The productivity would be increased by reducing the downtime due to jamming in the drill hole. Jamming occur when the system does not compensate for changes in rock conditions. By

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12

Lukin, Nikolas. "Gestão do risco de falha do preventor anular de BOP multiplexado submarino." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-28092016-110330/.

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Após o acidente de Macondo (EUA, 2010), cujo prejuízo estimado é da ordem de US$ 42 bilhões, a análise de risco do BOP (Preventor de BlowOut) ganhou grande importância nos projetos de exploração e desenvolvimento de petróleo. O presente trabalho se aprofundou na análise de risco de falha no acionamento do preventor anular de BOP (uma das funções do BOP), mapeando a sensibilidade da manutenção, redundâncias do projeto e da vida útil dos componentes no risco de falha inerente ao seu funcionamento. Este estudo seguiu os fundamentos da inspeção baseada no risco e da manutenção centrada na confiabi

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13

Alkaragoolee, Mohammed Y. A. "Hybrid Modelling and Optimisation of Oil Well Drillstrings." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/16859.

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The failure of oil well drillstrings due to torsional and longitudinal stresses caused by stick-slip phenomena during the drilling operation causes great expense to industry. Due to the complicated and harsh drilling environment, modelling of the drillstring becomes an essential requirement in studies. Currently, this is achieved by modelling the drillstring as a torsional lumped model (which ignores the length of the drillstring) for real-time measurement and control. In this thesis, a distributed-lumped model including the effects of drillstring length was developed to represent the d

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14

Pinheiro, Francisca Sheldakelle Holanda Torres. "Desenvolvimento de misturas tern?rias para remo??o de reboco de fluido de perfura??o sint?tico." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17772.

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Made available in DSpace on 2014-12-17T15:42:26Z (GMT). No. of bitstreams: 1 FranciscaSHTP_TESE.pdf: 2918129 bytes, checksum: e712b711537d456c1dd4eaa0f003f3af (MD5) Previous issue date: 2013-04-01<br>The construction of wells is one of the most important activities of the oil industry. The drilling process is the set of activities and operations to design, program and perform the opening thereof. During this process, the cuttings are removed by the drilling fluid, or mud, and carted to the surface. This fluid is injected into the drill string and returns to the surface through the annu

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15

Magalh?es, Marcio Osvaldo Lima. "Din?mica do b?rio em solos contaminados por res?duos oriundos da perfura??o de po?os de petr?leo." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/jspui/1222.

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Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-09-28T13:47:04Z No. of bitstreams: 1 2011- Marcio Osvaldo Lima Magalhaes.pdf: 4632406 bytes, checksum: 8ccefc16f724417fcb426aaf9aac9f4a (MD5)<br>Made available in DSpace on 2016-09-28T13:47:04Z (GMT). No. of bitstreams: 1 2011- Marcio Osvaldo Lima Magalhaes.pdf: 4632406 bytes, checksum: 8ccefc16f724417fcb426aaf9aac9f4a (MD5) Previous issue date: 2011-12-19<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>Despite the known problems caused by the by-products generated from the exploration of oil, this activity w

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16

Ofoegbu, Kelechi. "How contractual risk allocation provisions of oil and gas contracts have been, or may be, interpreted by an English court : a case study of some model offshore drilling rig contracts developed in the United Kingdom, Canada and the United States of America." Thesis, University of Dundee, 2018. https://discovery.dundee.ac.uk/en/studentTheses/d61b7e5f-1027-49c3-bfc8-4ff8a1d55a37.

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This study is an examination of how English courts have approached, or are likely to approach - and therefore, the effectiveness of - attempts by the parties to oil and gas contracts to allocate risks arising from the activities which form the subject matter of their respective contracts inter se. The study utilises petroleum industry standard form offshore drilling contracts in the United Kingdom, Canada and the United States of America as the context for this analysis, and examines the risks associated with drilling and other incidental operations, in the light of catastrophic events such as

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17

Barreto, Gilmar Wilian. "Projeto de uma perfuratriz multifuncional para execução de estacas e desenvolvimento de um ensaio de campo que utiliza o sistema de monitoração eletrônica da perfuratriz." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-18032015-152955/.

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Esta tese apresenta, o projeto de uma perfuratriz que permite a execução de cinco tipos de fundação profunda, e o desenvolvimento de um ensaio de campo que possibilita avaliar as resistências por atrito lateral desenvolvidas entre o instrumento envolvido pelo solo escavado e o terreno natural. A perfuratriz foi projetada para executar estacas dos tipos hélice contínua monitorada, escavadas com trado mecânico, hélice segmentada monitorada, raiz e hollow-auger. As estacas dos tipos hélice contínua monitorada e as escavadas com trado mecânico são muito utilizadas no Brasil; as estacas raiz e holl

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18

Maštera, Lukáš. "Koncepce vysokorychlostní vrtné hlavy pro odběr vzorků hornin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443237.

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THE THESIS FOCUSES ON A CONSTRUCTION DESIGN OF A NEW DRILLING HEAD DESIGNED TO REPLACE THE ORIGINAL ONE IN A MULTIDRILL HYNDAGA DRILLING RING. THE SUBSTITUTION IS SUPPOSED TO PROVIDE A SOLUTION TO THE SHORTCOMINGS OF THE CURRENTLY USED DRILLING HEAD. THE THESIS ANALYSES PARAMETERS OBTAINED FROM THE MANUFACTURER, NEW PRODUCTION REQUIREMENTS AND PROPOSES TWO TYPES OF MOTORS INNOVATIVE METHODS HAD BEEN IMPLEMENTED IN CALCULATIONS OF CONCEPTUAL PARAMETERS OF THE NECESSARY COMPONENTS. THE OUTCOME IS A NEW F-TYPE DRILLING HEAD.

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19

Kříž, Jakub. "Analýza carriage Top Drivu vrtné věže." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318643.

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The subject of this diploma thesis is determination of the cause of crack formation at the carriage Top drive for MND Drilling & Services company. The aim of the diploma thesis is to analyze the load states of the component. Furthermore, the aim is to create a computational model and boundary conditions and to create suggestions of improvements leading to the elimination of cracks. And finally, to evaluate the results of construction improvements..

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20

Бабчук, С. М. "Контроль енергетичних показників дизельного приводу ротора бурових установок". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2004. http://elar.nung.edu.ua/handle/123456789/4006.

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Дисертація присвячена розробці методу контролю енергетичних показників дизельного приводу ротора бурових установок, що базується на оцінці швидкості обертання колінчастих валів дизельних агрегатів силового приводу бурової установки і швидкості обертання стола ротора. Запропоновано новий метод контролю енергетичних показників дизельного приводу ротора бурових установок. Метод дозволяє контролювати у реальному часі енергетичні показники дизельного приводу ротора бурових установок, що дозволяє уникнути багатьох ускладнень і аварій у процесі буріння, підвищити, як проходку на долото, так і механіч

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21

Plachý, Jiří. "MKP analýza nosiče rotační hlavy vrtné věže a návrh na jeho úpravu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377879.

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This diploma thesis deals with FEM analysis and optimization of carriage for top drive system of drilling rig Bentec 350 AC and it is defined as a development contract for company MND Drilling & Services a.s. Intensive drilling leads to damages and repeated occurrence of fatigue cracks on carriage especially along edges of welded ribs in their heat-affected zone. The aim of this thesis is to draft construction improvements of carriage which leads to elimination of damages. Realization of this modifications depends on correct definition of boundary conditions, analysis of damage occurrence as w

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22

Šorm, Petr. "Hrubá stavba objektu AV v Praze Dejvicích - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-227006.

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Building Technology project deals with the processing of the necessary documents and documentation for implementation shell of the building of the Academy of Sciences in Prague Dejvice. At the beginning of the technical report on the building technology project, which provides basic information about the construction. Content is the solution of the building construction site by the financial, structural and technological and time. Construction technology solution is based on monolithic work.

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23

Honzík, Roman. "Kampus MU Brno (zelená etapa) - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227231.

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The subject of this thesis is the solution of building technology project for the construction of the main processing stages University Campus Bohunice (green stage). It is a building consisting of nine pavilions which are mutually connected by two corridors. Corridors simultaneously combine green building stage with blue previous stage. All buildings are partial basement and three floors. Exceptions are SO IV-309, which consisted of four storeys with casing of an elliptic cylinder with a flat roof in the middle of the roof sheathing. In my thesis I deal specifically this very building object,

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24

Гуменюк, Т. В. "Оптимальне керування процесом поглиблення нафтогазових свердловин в умовах невизначеності". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2016. http://elar.nung.edu.ua/handle/123456789/4780.

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Дисертація присвячена розробці методів визначення технологічних операцій бурової установки на основі теорії штучних нейронних мереж для автоматичного визначення тривалості спуско-підіймальних операцій у поточному рейсі, Ідентифікації процесу поглибленням свердловин з врахуванням нечіткості режимних параметрів, визначенні оптимальних керуючих впливів для роторного способу буріння за критерієм вартості метра проходки свердловини в умовах невизначеності. На основі проведеного аналізу сучасного стану проблеми оптимального керування процесом поглиблення свердловин встановлено, що актуальним напрямк

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25

Blažek, David. "Stavebně technologického řešení Vzdělávacího komplexu v Brně." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225564.

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This master’s thesis deals with construction of the gross building of new building of learning complex FEKT VUT in Brno. It contains the design of earthworks, underground setting piles, monolithic structures and isolation of the building for further construction. Construction and technological project includes technical report, time and financial plan of construction, study of the implementation of major technological stages of site preparation, budget of facilities, technological regulation to solved stages, inspection and test plan of monolithic structures, health and safety plan and energy

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Všetečka, Jan. "Stavebně technologický projekt revitalizace těžní věže Brno." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227274.

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The task of this diploma’s thesis was processing construction-technology project to revitalization the mining towers because of its current worsened state and subsequent adjustments for cultural activities.

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Bae, Yoon Hyeok. "Loads on Tie-Down Systems for Floating Drilling Rigs during Hurricane Conditions." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-691.

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Tie-down systems are used to fasten drilling rigs to the deck of offshore structures during harsh environmental conditions such as hurricanes. During Hurricane Ivan (2004) and Katrina (2005), a number of offshore structures were moved and several tie-down systems were damaged. In the present study, the reaction force and connection capacity of tie-down systems for a TLP and SPAR are investigated. The environmental conditions are taken from the API Bulletin 2INT-MET which has been updated after several major storms during 2004-2005. The hydrodynamic coefficients of the TLP and SPAR are obtained

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28

Verma, Ankit. "ALTERNATE POWER AND ENERGY STORAGE/REUSE FOR DRILLING RIGS: REDUCED COST AND LOWER EMISSIONS PROVIDE LOWER FOOTPRINT FOR DRILLING OPERATIONS." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-587.

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Diesel engines operating the rig pose the problems of low efficiency and large amount of emissions. In addition the rig power requirements vary a lot with time and ongoing operation. Therefore it is in the best interest of operators to research on alternate drilling energy sources which can make entire drilling process economic and environmentally friendly. One of the major ways to reduce the footprint of drilling operations is to provide more efficient power sources for drilling operations. There are various sources of alternate energy storage/reuse. A quantitative comparison of physical size

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Nunn, Andrew Howard. "The Feasibility of Natural Gas as a Fuel Source for Modern Land-Based Drilling Rigs." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10359.

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The purpose of this study is to determine the feasibility of replacing diesel with natural gas as a fuel source for modern drilling rigs. More specifically, this thesis (1) establishes a control baseline by examining operational characteristics (response, fuel usage, and cost) of an existing diesel-powered land rig during the drilling of a well in the Haynesville Shale; (2) estimates operational characteristics of a natural gas engine under identical conditions; and (3) draws a comparison between diesel and natural gas engines, determining the advantages and disadvantages of those fuel sources

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Chiou, Chuang Chyuan, and 邱創泉. "Computer aided design for shaft in oil well drilling rig." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/67237952579504859878.

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Onwuka, Amanda Chiderah. "Econometric analysis of the impact of market concentration on prices in the offshore drilling rig market." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2343.

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This thesis presents an econometric methodology for analyzing the impact of market concentration (HHI) on the day rate prices paid by E&P operators for the lease of drilling rigs. It is an extension of the work of Lee (2008), ‘Measuring the Impact of Concentration in the Drilling Rig Market’. Specifically, the work entailed using a more detailed time series data than was initially used (quarterly), analyzing impact of concentration on day rate prices by water depth specification of drilling rigs, and accounting for the impact of autocorrelation on the analysis. The results for jack-ups, withou

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Garcia, Juan Elias. "Piezoelectric transducer built-in self-test for logging while drilling instrument sensor evaluation at rig site." Thesis, 2014. http://hdl.handle.net/2152/26344.

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Logging While Drilling (LWD) instruments used in oil and gas exploration are subjected to extreme environmental conditions that make reliable operation a major challenge. The sensors directly exposed to this environment experience accelerated aging and may suffer physical damage leading to failure. The cost of drilling and rig operations is very high magnifying any failures or issues with LWD tools. The goal of this report is to present a built-in self-test for an instrument sensor that provides a means to evaluate sensor functionality. The sensor is a piezoelectric ultrasonic transducer. A br

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Wilson, Joshua Kyle. "Design and Analysis of a Test Rig for Modeling the Bit/Formation Interface in Petroleum Drilling Applications." Thesis, 2013. http://hdl.handle.net/1969.1/149457.

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Equipment failure and well deviations are prevailing contributors to production delays within the petroleum industry. Particular monetary focus is given to the drilling operations of wells to overcome these deficits, in order to extract natural resources as efficiently, and as safely, as possible. The research presented here focuses on minimizing vibrations of the drill string near the bottom-hole assembly (BHA) by identifying the cause of external forcing on the drillstring in vertical and horizontal wells and measuring the effects of various factors on the stability of perturbations on the s

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