Oil, Gas, and Energy Commons^™

Natural Fracture Evolution: Investigations Into The Middle Devonian Marcellus Shale, Appalachian Basin, Usa, Natalie Abigail Mitchell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Optimizing recovery from unconventional shale reservoirs has generated considerable research into optimal recovery methods through hydraulic fracturing design and shale reservoir characterization in the development of long-term hydrocarbon producers. Permeability at multiple scales from nanometer-scale pore sizes and nano-darcy permeability to completion-induced fractures defining a 100’s of meter stimulated reservoir volume plays a significant role in hydrocarbon flow during production in shale reservoirs. Preexisting cemented fractures in unconventional shale reservoirs are abundant and preferentially reactivate during induced hydraulic fracturing treatment to create necessary large-scale permeability. While previous investigations have significantly improved our knowledge of shale reservoirs, it has also highlighted …

Quantifying The Carbon Stored And Sequestered By The Trees On Pomona College’S Campus, Paola A. Giron-Carson

Scripps Senior Theses

We are experiencing a climate crisis that must be confronted with strategic mitigation. Pomona College contributes to the climate crisis through its emissions for which there is a baseline record. However there is no baseline record of the climate mitigation currently performed by the trees on Pomona’s campus through carbon storage. This study seeks to determine a current baseline quantity of carbon stored and sequestrated by Pomona’s trees as well as possible courses of climate mitigation for Pomona College to take. Initial information gathering was conducted through interviews with several stakeholders. This study was conducted using data collected prior to …

Studies On Non-Transition Metal Substitution To Ab2 Metal Hydride Alloys For Battery Application, Shiuan Chang

Wayne State University Dissertations

Nowadays, multiphase transition metal-based AB2 metal hydride alloys and the rare-earth metal-based AB5 alloys (currently used in consumer NiMH batteries) are used as negative electrodes in NiMH batteries. It is of great interest to explore the possibility of significantly improving NiMH battery performance to compete with Li-ion batteries. In this area, the effect of dopant elements from Group-IA, -IIA, -IIIA non-transition metal family has not been thoroughly studied. In this study, lithium, magnesium, and boron (a metalloid considered metal in this study) were chosen as modifiers in the C14-phase predominant AB2 alloy by different dopant concentrations and synthesis methods, doping …

An Unmanned Aircraft System For Marking Live Power Lines To Prevent Bird Collisions, Mattheuns D. Pretorius, Lourens Leeuwner, Kaajial Durgapersad, Constant Hoogstad, Peter Beckedahl, Michael D. Michael, Kishaylin Chetty

Human–Wildlife Interactions

Collisions with overhead power lines represent a significant cause of mortality for a number of large bird species worldwide. Certain threatened species are severely impacted by power line collisions, particularly those for which there are no other known significant threats. In South Africa, bird collisions with overhead power line cables, including collisions with phase conductors and shield wires, contribute significantly to annual threatened bird species mortalities associated with Eskom power lines. The most practical mitigation measure is to attach bird anti-collision devices as markers on the cables. Current marking methods involve installations by hand, where linemen are hoisted up to …

24/7 Clean Energy, Todd Aagaard

University of Colorado Law Review

In the face of the rapidly escalating climate crisis, the electricity sector is moving toward renewable energy. To date, policies and strategies have focused on increasing overall renewable energy generation, with little regard for timing and location. The result has been a misalignment of supply and demand in renewable energy markets. Renewable power projects produce energy when and where it is least expensive, leaving supply scarce at other times and places. Consumers, meanwhile, continue to use power when and where they need it. This mismatch increases the electricity grid’s dependence on fossil fuel–fired electricity to meet electricity demand at times …

Socio-Economic Comparative Analysis Of Front-Of-The-Meter And Behind-The-Meter Microgrids For Panamnik, Olivia C. Amann Mcshea

Cal Poly Humboldt theses and projects

In Northern California, the Karuk Tribe is feeling the effects of climate change on inadequate energy infrastructures leading to unreliable power supply. Improving energy reliability in a way that also increases energy sovereignty is necessary. Renewable energy microgrids have emerged as a pathway forward.

Modeling ownership structures and cash flows for different microgrid configurations can support the Tribe’s implementation of a microgrid in Orleans, CA that maximizes community benefits. This thesis considers a front-of-the-meter (FTM) and behind-the-meter (BTM) configuration, both approximately 2 MW solar PV and 3 MW/12 MWh battery energy storage. Cash flows including capital costs, operations and maintenance …

Offshore Wind Industry Leaders’ Operations And Maintenance Management Strategies, Heather Louise Shimp

Walden Dissertations and Doctoral Studies

The difficulties offshore wind leaders have in managing operations and maintenance (O&M) costs threaten the ability to operate offshore wind farms profitably, diversify the energy supply, and reduce dependence on imported fuels. Grounded in the frameworks of Lean Six Sigma and McKinsey 7-S, the purpose of this qualitative multi-case study was to explore offshore wind farm leaders’ strategies to manage O&M costs in Europe. The participants were six offshore wind leaders who implemented strategies to successfully manage O&M costs for offshore wind farms located in Europe. Data were collected using semistructured interviews, participant observation, and reviewing public and participant-supplied documents. …