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 44 for “"shale reservoirs"”.
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Modeling Storage and Flow of Fluids in Shale Reservoirs
Recent development of shale gas reservoirs has led to a revolution in the global energy market. The shale gas industry has expanded rapidly through the application of new drilling and completion technologies, particularly horizontal wells completed in multiple hydraulic fracture stages. While these …
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Production Analysis in Tight/Shale Reservoirs Via Machine Learning Approaches
The development of unconventional tight/shale gas reservoirs has undergone a revolutionary transformation, primarily fueled by advancements in horizontal drilling and multi-stage hydraulic fracturing technologies. These innovations have enabled the economical extraction of hydrocarbons from …
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Low oil-water ratio invert emulsion mud for unconventional shale reservoirs
… used for drilling difficult formations such as shale, there is the necessity to develop an environmentally friendly drilling mud. Vegetable oils such as Jatropha have proven to be a comparable alternative to diesel oil. However, there have been concerns of compatibility of the vegetable oils …
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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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Total Organic Carbon and Clay Estimation in Shale Reservoirs Using Automatic Machine Learning
… two criteria to identify the "sweet spots" in shale gas plays. Recently, machine learning has been proved to be effective to estimate TOC and clay from well loggings. The remaining questions are what algorithm we should choose in the first place and whether we can improve the already built …
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Chemical treatment and gas huff-n-puff for enhanced oil recovery in oil shale reservoirs
Shale oil contributes more than 60% to the US oil production. Shale oil production has been feasible because of technological development for horizontal wells with multistage hydraulic fracturing. However, after primary production, more than 90% of the oil is left behind in shale oil reservoirs due …
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Development of a numerical technique for modelling of multi-stage hydraulic fracturing in shale reservoirs
… efficiency from low permeable unconventional reservoirs demands promoting techniques including horizontal well drilling and multi-stage Hydraulic Fracturing (HF) stimulation. What significantly affects the fractures arrangement, and associated geometries is the stress field changes, referred …
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Inclusion of Fracture Skin in Duong’s Model of Rate-Decline Analysis for Fracture-Dominated Shale Reservoirs
… in the US oil and gas industry. Unconventional reservoirs vary significantly in their reservoir characteristics and production methodologies when compared to conventional reservoirs. The differences between conventional and unconventional reservoirs lead to significant duration of transient flow …
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Investigating the factors impacting the success of immiscible carbon dioxide injection in unconventional shale reservoirs: An experimental study
<p>"Unconventional shale reservoirs are currently gaining significant interest due to the huge hydrocarbon volumes that they bear. Enhanced oil recovery (EOR) techniques have been suggested to increase recovery from shale reservoirs. One of the most promising EOR methods is gas EOR (GEOR), most …
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Gas-condensate flow modelling for shale gas reservoirs.
In the last decade, shale reservoirs emerged as one of the fast growing hydrocarbon resources in the world unlocking vast reserves and reshaping the landscape of the oil and gas global market. Gas-condensate reservoirs represent an important part of these resources. The key feature of these …
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Evaluation of diagnostic fracture injection test (DFIT) and rate transient analysis (RTA) in Hereford field, northern DJ Basin
… for stimulating these ultra-low permeability reservoirs. Furthermore, unlike conventional reservoirs, unconventional reservoirs require a much deeper understanding of reservoir sediment. Geology and geophysics can provide information on the nature of sediments and structural positions while …
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Integration of Nano CT and SEM in the Characterization of Marcellus Shale
Shale has proven to be a major unconventional natural gas play. However, due to its complex bedding orientations, comparatively high clay content and its complex heterogeneity, producing and optimising production is often hindered by its challenging complexities. It is now imperative to critically …
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Controlling Factors on Condensate Production from the Eagle Ford Shale
This thesis examines the impact on recovery from shale condensate reservoirs of key properties such as porosity and permeability as well as other controlling factors that include the horizontal wells length, liquid drop out and liquid loading around the wellbore. It also addresses the possibility …
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Multi-scale Numerical Studies on Characterization of Shale Gas Reservoir Development
… reliably and objectively assess and forecast the shale reservoir performance with an advanced understanding of the shale reservoir specialty. With enhanced hydraulic characterization, Chapter 2 provides an advanced modelling scheme using the commercial platform to reduce history-match errors and …
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The Application of Single porosity Model to Predict the Performance of the Low Permeability Naturally Fractured Formations
Natural gas extraction from shale is currently an expensive endeavor due to the tight reservoir rock with nano-darcy permeability. New technology in the form of horizontal drilling and hydraulic fracturing (fracturing through the use of high pressure liquids) has overcome the flow capacity problem …
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Methods and systems for ballooned hydraulic fractures and complex toe-to-heel flooding
… from both conventional and unconventional reservoirs is very low. The hydrocarbon recovery factor for conventional reservoirs is typically between 5% and 15% after primary recovery and between 35% and 45% after secondary recovery. The hydrocarbon recovery factor for organic shale reservoirs …
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Investigation of Asphaltene Instability Under Gas Injection in Unconventional Reservoirs and its Impact on Oil Recovery Performance
<p>"Unconventional reservoirs, such as shale gas and tight oil formations, have become an important source of energy in recent years. However, these reservoirs often contain high levels of asphaltenes, which can lead to deposition and blockages in production wells and reduce the flow of …
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Time-lapse seismic AVAz in the Stocker Field
Organic rich Murdock reservoirs require hydraulic stimulation to be economically productive. Zones of high fracture density are desired due to the increase in permeability they would have. Thus, fracture characterization is an essential part of production planning in unconventional reservoirs. …
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Correlstion between the volume of slurry and the volume of fracture in Barnett Shale
… large fracture networks can be generated in many shale reservoirs and create multiple of plan complex structure. The ultra-low permeability in Barnett shale requires hydraulic fracturing to generate wellbore contact with the reservoir in order to achieve economic gas rates by the concept of a …
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Techno-economic analysis of water management options for unconventional natural gas developments in the Marcellus Shale
… of large-scale hydrocarbon production from shale reservoirs has revolutionized the oil and gas sector, and hydraulic fracturing has been the key enabler of this advancement. As a result, the need for water treatment has increased significantly and became a major cost driver for producers. …
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