Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 680 for “"Drilling"”.
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Smart Drilling: A computer-based system for planning drilling operations.
… computer aided process planning system--Smart Drilling System is presented. The system will be able to automatically generate plans for multiple hole drilling process, such as tool selection, drilling sequence, and etc. The system contains four modules: (1) Tool selection module, (2) Machining …
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Development of drilling optimization models for autonomous rotary drilling systems.
… and performance improvement techniques in drilling operations. Traditional drilling methods depend on the effectiveness of the human-driller in the management of operating parameters to improve system performance. Although existing work has identified the need to upscale from manual …
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A drilling forensic framework and algorithm for the analysis and diagnoses of drilling dysfunction.
In the oil and gas industry, drilling wells can be time-consuming, largely influenced by the rate of penetration of the drill bit. Drilling dysfunctions result in wasted energy, reduced penetration rates, and potential damage to the bottom hole assembly or drill bit which can significantly impact …
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Salt Drilling Problems in North Dakota
… four major formations encountered in oil well drilling are the Prairie Evaporite of Devonian age, Mississippian Charles, Permian Opeche, and the Spearfish of Triassic age. A variety of drilling muds including gypsum, lime, high PH, barium carbonate, and saturated salt base muds have been used …
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Optimal drilling parameters via geometric programming
Includes bibliographical references.
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Strength of drilling fluid filter cakes
… techniques are commonly used to prevent drilling fluid losses. Current methods generally require that particles are added to the drilling fluid to hinder fracture propagation, which creates practical difficulties as the particles are often relatively large. An alternative approach is the …
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Rock Drilling with impregnated diamond microbits
A fully instrumented laboratory drilling rig was designed and used to drill a variety of rock types with impregnated diamond microbits. The rocks, selected to represent a wide range of properties, were characterised by optical petrography and by the measurement of uniaxial compressive strength and …
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Studies in salt resistant drilling muds
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology, 1941.
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Aspects of energy requirements for rock drilling
… A detailed study of laboratory rotary-percussive drilling in a wide range of rocks under different conditions, with the collection of drill cuttings and measurement of the drill parameters. The correlation of drill parameters with rock indices by energy concepts and the developed empirical …
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Temporal Bone Drilling Simulation Boot Camp Course
… camp style virtual reality (VR) mastoidectomy drilling course could be developed to improve a novice learner’s mastoidectomy drilling technique. Forty medical students were randomized to a traditional curriculum (control) group or a VR curriculum (intervention) group. Participants performed …
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Drilling of carbon fibre reinforced plastic composites
… work were undertaken to evaluate the drilling of CFRP and associated stack materials. Phase 1 and 2 involved small diameter holes (1.5 mm) in thin CFRP laminates (3 mm thick) while Phase 3 addressed the feasibility of one-shot drilling (6.35 mm diameter holes) in multilayer workpiece …
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Flexible shaft drilling for cased well exploration
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Geologic feature prediction using roof bolter drilling parameters
… and data acquisition technologies allow the drilling performance of these roof bolters to be monitored on a real-time basis. Drilling data collected from these machines can be used to determine geological features present in the mine roof. A J. H. Fletcher & Co. roof bolter was fitted with an …
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Drilling fluids filtration and impact on formation damage.
… performance based on the total skin factor after drilling operations are: production logging, flow measurement and well test data. The total skin factor is used in the flow equations to estimate the production rate in wells that are affected by formation damage in order to optimise the flow system …
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Thermal Drilling and Anchoring on Icy Planetary Bodies
… a dual-function system that first uses a thermal drilling process to burrow into Europa’s surface ice and then serves as an anchor, supporting the mobility of the rover to which it is attached. Thermal drilling provides high reliability but can be energetically costly. An intermittent thermal …
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Medium-assisted Microwave Telemetry for Directional Drilling Applications
The drilling industry has an increasing reliance on sensor telemetry systems in order to improve process efficiency and safety. Typically measured in terms of throughput, telemetry performance is in constant need for improvements for better measurement and logging while drilling tools to be …
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Perfuração com uso de revestimento (Casing While Drilling-CWD)
O presente trabalho se baseia na apresentação de uma nova tecnologia de perfuração, a perfuração com uso de revestimento. Com a crescente complexidade na atividade de exploração de petróleo, faz-se necessário o desenvolvimento de novas tecnologias que permitam a realização da atividade de …
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