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 226 for “"gas production"”.
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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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Variables Affecting Gas Production in Mesophilic Anaerobic Digestion
… into the factors which influence the net gas production in mesophilic anaerobic digesters. The major variables were examined during a six year period using equipment specially designed for the purpose. Continuous operation of these pilot plants over many months produced results which …
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Hydrogen Gas Production By a Species of Ectothiorhodospira
A hydrogen gas (H₂) producing species of Ectothiorhodospira isolated from Soap Lake, Washington, possessed the nitrogenase enzyme complex. Increasing evolution of H₂ with decreasing ammonium chloride (NH₄C1) concentrations provided evidence that nitrogenase was the catalyst in gas production. Cells …
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AI assistant for the oil & gas production engineer
In the Oil & Gas industry Production Engineers are responsible for monitoring well performance and ensuring that each well produces at its target rate. Wells can experience a wide variety of problems that negatively impact production. It is the Production Engineer's responsibility to identify and …
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Optimization of fracturing fluid to increase shale gas production
… of energy. Specifically, the demand for natural gas is rising explosively after the energy consumption structure has changed from oil to gas. Due to various reasons and motivations, shale has been considered having great reserves and believed in alleviating the energy crisis. Nevertheless, the …
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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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Greenhouse Gas Production and Nutrient Reductions in Denitrifying Bioreactors
… to address excess phosphorus and mitigate the production of nitrous oxide, a potent greenhouse gas. Results from a laboratory experiment supported the hypothesis that the addition of biochar, a charcoal-like soil amendment and novel organic carbon source in DNBR research, would increase nitrate …
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Development of gas production type curves for coalbed methane reservoirs
Coalbed methane is an unconventional gas resource that consists on methane production from the coal seams. The unique coal characteristic results in a dual-porosity system. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. …
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Development of hydrate risk quantification in oil and gas production
… etc. The solid deposits not only affect the production but also pose a safety concern; thus, flow assurance is significantly important in designing and operating subsea oil and gas production. In most subsea oil and gas operations, gas hydrates form at high pressure and low temperature …
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Flow mechanisms and numerical simulation of gas production from shale reservoirs
<p>"Shale gas is one kind of the unconventional resources which is becoming an ever increasing component to secure the natural gas supply in U.S. Different from conventional hydrocarbon formations, shale gas reservoirs (SGRs) present numerous challenges to modeling and understanding due to complex …
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Design and Optimization of Process Parameters in Bio-Gas Production Systems
… by increasing concentrations of greenhouses gases (CO2 among others). Biogas production is a key technology in the development of sustainable energy supply systems that aims to cover the energy demand using renewable sources and to mitigate greenhouse gas emissions. Biogas production can be …
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Enhancement of unconventional oil and gas production forecasting using mechanistic-statistical modeling
Unconventional oil and gas basins have rapidly become expansive and critical energy resource systems. However, accurately predicting highly variable well production rates remains challenging, given the typically poor subsurface characterization and complex flow behavior involved. This creates …
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Biochar and pH as Drivers of Greenhouse Gas Production in Denitrification Systems
Nitrous oxide (N2O) is a greenhouse gas (GHG) with 300 times the radiative forcing in the atmosphere of carbon dioxide (CO2), and has recently become a subject of great concern because the nitrogen (N) fertilizers which have been necessary to increase agricultural productivity have also …
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Hydrogen Gas Production and Effects During Remediation Using Nano-scale Zero-valent Iron
… of the potential effects of hydrogen gas (H2) exsolution during nanoscale zero-valent iron (nZVI) groundwater remediation applications. An improved understanding of gas exsolution and its effects can be applied to remediation technologies that produce gas in excess of solubility …
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Catalytic membrane reactors for synthesis gas production from natural gas via partial oxidation.
Natural gas obtained during the extraction of liquid hydrocarbons is often undesired due to the lack of infrastructure to transport the natural gas to an onshore location. As a result the natural gas is often flared causing economic waste and environmental concern. It would therefore be desirable …
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An analysis of the potential economic impact of natural gas production in Tanzania
Following substantial discoveries of natural gas in recent years, Tanzania has new options for economic development. The country's policy makers are faced with having to make decisions about how best to utilize the gas in order to drive economic development The options before the government are …
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Simulating gas production from hydraulic fracture networks : a case study of the Barnett shale
… an extremely successful unconventional natural gas development, mainly due to the optimization of hydraulic fracturing treatments. The ideal stimulation job for the Barnett is a slickwater treatment with low proppant concentrations, because this type of waterfrac is believed to create longer and …
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Comparison of lime and sodium hydroxide for the control of gas production from sewage sludges
The effects of lime and sodium hydroxide on gas production from stored sewage sludge were examined. The impact of calcium on gas production was also investigated. The rate and volume of gas production and change in pH over time were monitored in all the reactors in an effort to study the …
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