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 57 for “"Oil and gas production"”.
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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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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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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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Remote Detection of Sodium and Potassium Atomic Emission Signatures as an Indicator of Liquid Carry-Over into Flare Systems
… of salt-laden aerosols into flares at upstream oil and gas production sites is a potentially important driver of adverse flare emissions. However, the frequency of this occurrence at upstream production sites is unknown. Sodium (Na) and potassium (K) are abundant in produced water samples and …
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CFD-based erosion modelling of simple and complex geometries
Choke valves are important components in oil and gas production systems that are used to control the pressure and flowrate of fluids issuing from oil and gas reservoirs. The presence of sand in the production fluids can cause considerable damage to such components, and as sand is increasingly …
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Mechanistic and probabilistic rate-time analysis of unconventional reservoirs
… analysis is a widely used technique to forecast production in oil and gas production. The geological complexity of shale formations and their ultra-low permeability creates significant uncertainty on the behavior of these wells and their production forecast. This work is divided into two parts. …
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STUDY OF THREE-PHASE AIR-BRINE-SALT COUNTERFLOW IN AN INCLINED PIPE
Gas-liquid-solid counterflow (GLSCF) in inclined pipes occurs in various industrial processes, including oil and gas production and desalination systems. This thesis presents an experimental investigation of GLSCF in a 2-inch pipe inclined at 30°, utilizing air, saturated brine, and salt particles. …
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Inclusion of Fracture Skin in Duong’s Model of Rate-Decline Analysis for Fracture-Dominated Shale Reservoirs
Production forecast plays an important role in helping us make rational decisions in face of large uncertainties. Unconventional oil and gas production has followed an accelerated growth trajectory in the US oil and gas industry. Unconventional reservoirs vary significantly in their reservoir …
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Time Series Analysis of Surface Deformation Associated With Fluid Injection and Induced Seismicity in Timpson, Texas Using DInSAR Methods
In recent years, a rise in unconventional oil and gas production in North America has been linked to an increase in seismicity rate in these regions (Ellsworth, 2013). As fluid is pumped into deep formations, the state of stress within the subsurface changes, potentially reactivating pre-existing …
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Effectiveness of microseismic monitoring for optimizing hydraulic fracturing in California
… fracturing has fundamentally changed the oil and gas industry in the past 10 years. Bakersfield, California provides a unique case study because steam injection, a type of hydraulic fracturing, has been used there for more than 60 years. Seven companies, varying in size and strategy, use …
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Investigation of sensitivity of surface deformation to subsurface properties and reservoir operations
An experimental study is performed to understand the sensitivity of ground deformation to subsurface properties and operations of oil and gas fields. Ground deformation, or more severely subsidence, may pose concerns for human settlements situated above the reservoir. This Masters thesis will study …
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Modelling and Analysis of the Axial Vibration on BHA of Horizontal Drilling Rig
… due to its capability of reducing drilling time and cost, and at same time increasing the production. In practice, oil and gas production companies employ rotary steerable system or positive displacement motor to steer the drill bit to follow a pre-planned well trajectory along a desired …
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Nonequilibrium Phenomena in Multiphase Flow, Transport, and Phase Change in Porous Media: Pore-Level Physics, Network Modeling, and Upscaling
Multiphase fluid flow, multicomponent transport, and thermodynamic phase change in porous media are important for many subsurface environmental and energy applications, including vadose zone contaminant transport and shale oil and gas production. Understanding these complex physical processes …
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Development and performance characterization of first-generation dendrimeric nanofiltration membranes
Upstream processes used for oil and gas production generate brackish water as a byproduct called produced water. Desalination and reuse of produced water can potentially be a new resource for freshwater which may alleviate local and global water scarcity. Currently, reverse osmosis (RO) is the …
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Monitoring of oil-production-induced subsidence and uplift
… Examples of the damages of the infrastructure in oil and gas fields due to production make clear the need to monitor processes in the field. Land surface deformation is one method that can yield insights into geodynamic processes. Knowledge of the processes can lead to mitigation approaches. This …
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Application of artificial intelligence techniques to well spacing optimization in fractured tight reservoirs
… development particularly unconventional fields and significantly affects the economic performance of oil and gas production operations. Oil and gas field operators over the years have resorted to field trials, surveillance and numerical simulation as the modes of determining optimal well …
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The impact of hydraulic fracturing on housing values in Weld County, Colorado: a hedonic analysis
Oil and gas production using hydraulic fracturing has rapidly spread across the US and moved into suburban and urban neighborhoods. Proximity to residential areas has generated significant concerns by homeowners about water pollution, air pollution, aesthetics, and hence property values. However, …
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Architecting an Upstream Oil and Gas Enterprise for Innovation
The oil and gas industry’s rapidly evolving and dynamic nature has historically led to significant volatility within the energy sector. Upstream oil and gas enterprises, in particular, need to catch up in adapting and adjusting their corporate strategies to embrace cleaner and more sustainable …
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Modeling the Behavior of Smart Oil Well Cements and Offshore Pipe-Soil Interaction in Very Soft Soil
It is critical to ensure the durability of the oil and gas production infrastructures from borehole to pipelines. Rheology properties and hardening characteristics are some of the important parameters for cementing slurry during installation. Also over the last decade, health monitoring of the …
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System architecture of offshore oil production systems
… commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to assist BP in the development of concepts for a multi-billion dollar oil production system, particularly in the unprecedented deep water arctic locations prone to seismic activity, as …
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