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 30 for “"gas well"”.
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Limit State Design of oil and gas well casings
… operations and production in the oil and gas industry. Traditionally casings were designed using working stress design, which had a number of shortcomings such as poor economics, inflexibility and uneven risk. This thesis was initiated by the increasing demand for an improved design of …
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Analysis and optimization of coalbed methane gas well production
Coalbed methane wells have been used for many years as a viable means of extracting quantities of methane gas for use as a clean and efficient energy source. However, there is a limited understanding of many of the factors involved during the extraction process. As the more easily attainable …
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Assessment of Sediment Runoff from Natural Gas Well Development Sites.
… storm water runoff damages to the environment. Gas well construction sites are similar to other construction sites in how the landscape is altered, but are not similarly regulated. This study identified sediment runoff from gas well development sites by collecting it in traps and weirs, and by …
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The effect of oil-and-gas well drilling fluids on shallow groundwater in western North Dakota
<p> Upon completion of an oil-and-gas well in North Dakota the drilling fluid is buried in the reserve pit at the site. Reclamation of the drill site is expedited by digging a series of trenches which radiate out from the reserve pit, The majority of buried drilling fluid is ultimately contained …
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Forest fragmentation mapping, change detection, and gas well site identification in remotely sensed imagery: the role of spatial resolution
… cover/land use change associated with natural gas drilling in Appalachia. Airborne and satellite remote sensing provides a tool for examining land cover changes. Although change detection has been used in many applications related to natural and anthropogenic land cover change, little research …
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Process improvement and policy analysis in oil and gas well development and construction through applications of system engineering and system dynamics concepts
Ever since the boom in unconventional oil and gas reservoir development, an increasing number of companies started to employ a manufacturing philosophy and use factory-like models in asset development. This thesis seeks to provide an overview of the main development processes and, with the help of …
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Effect of viscosity-compressibility product variation on the analysis of fractured well performances in tight unconventional reservoirs
… product on the analysis of fractured, tight-gas well performances. Pressure drops required to economically produce fractured, tight-gas wells may be in the thousands of psi. Under these conditions, the gas compressibility-viscosity product may exhibit variations 3 to 10 times greater than the …
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Accounting for Remaining Injected Fracturing Fluid
… of multi-stage fracturing of horizontal wells made the development of shale gas reservoirs become greatly successful during the past decades. A large amount of fracturing fluid, usually from 53,000 bbls to 81,400 bbls, is injected into the reservoir to create the fractures. However, only …
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Mechanisms and control of water inflow to wells in gas reservoirs with bottom water drive
Water inflow may cease production of gas wells, leaving a significant amount of gas in the reservoir. Conventional technologies of gas well dewatering remove water from inside the wellbore without controlling water at its source. This study addresses mechanisms of water inflow to gas wells and a …
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Legal Aspects, Limitation, and Obligations of Oil Well Drilling With Special Refrence to North Dakota
<p>In the drilling of an oil or gas well, a person must first acquire the right to drill. This can be accomplished by the purchase of the land or of the mineral rights, although it is usually done by leasing the mineral rights. Before drilling, he must perform all operations required by the state …
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Evaluation of Arsenic and Selenium Quantitation in Marcellus Shales and Flowback Saline Waters using Thiol Cotton Fibre-Graphite Furnace Atomic Absorption Spectroscopy and Diffusive Gradient in Thin Film Techniques
… as flowback wastewater produced from natural gas well drilling sites in the Marcellus shale and/or simulated or artificial high-salinity prepared from deionized water and spikes of different ions, selenium and arsenic concentrations.;A modified thiol cotton fiber (TCF) method employing lower …
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Shale gas development and respiratory health
… has rapidly increased in areas rich in shale gas and oil in the years 2006 onwards. Areas that have undergone shale gas development are likely to be largely rural with few other air pollution point sources. Fracking operations such as well drilling, gas processing, and increased truck traffic …
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Probabilistic Oil and Gas Production Forecasting using Machine Learning
This thesis improves oil- and gas-well profitability by quantifying the uncertainty of the production-forecasting process, using probabilistic machine learning (ML) techniques. A Bayesian Neural Network successfully modelled a complex shale gas reservoir system (Eagle Ford), generating a production …
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A system-theoretic approach to oil and gas assurance programs
… digital innovation and acceleration. Oil and gas well construction, in particular, will continue to incorporate automation to enhance capabilities and gain a competitive advantage. These changes to the technology landscape will fundamentally alter the nature of well construction and the …
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Contaminant migration of oil-and-gas drilling fluids within the glaciated sediments of north-central North Dakota
<p> A common practice during oil and gas well-site reclamation in North Dakota is to bury the drilling muds in shallow trenches near the borehole. These muds are saltwater based (between 100,000 and 300,000 mg/L of NaCl) and can contain high concentrations of chromium, lead, and other. toxic trace …
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Gas production forecasting using automatic type curve matching
As the demand for natural gas has increased in the last years, also the need for forecast reliable gas recoveries. Gas type curves are one of the methods utilized to estimate future well performance. The purpose of this study is the utilization of the Aminian et al type curves to model gas well …
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Aerosol formation from oil and gas development in the Eagle Ford Shale in two different seasons
Unconventional oil and gas development (UOGD) has grown significantly in the United States in the last several decades. This growth has influenced natural gas availability and reshaped the global energy economy. However, the effects on air quality remain uncertain. This work focuses on …
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Structural framework of the Appalachian Plateau of central West Virginia
… has attracted great interest recently due to the gas potential from the Marcellus Formation. 2D seismic data has brought new insights to areas, particularly Webster County, WV, that were once considered low potential due to the lack of knowledge of the deep structures in the Appalachian Plateau. …
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Extracting the economic benefits of natural resources in the Marcellus Shale Region
… place to capture the economic benefits of shale gas extraction in these two states, performing a rough cost benefit analysis that attempts to quantify the economic impact of a single natural gas well drilled in each state. The thesis has two objectives: first, to determine whether or not drilling …
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Modeling of Real Gas Flow Behavior in Porous Media
Due to the highly nonlinear variation of gas density and viscosity with respect to pressure, no analytical solution to the real gas diffusivity equation has ever been presented in the literature. Analytical solutions used in gas well testing and pressure analysis are based on idealized assumptions, …
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