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 43 for “"rock formations"”.
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Joint inversion of density and resistivity logs for the improved petrophysical assessment of thinly-bedded clastic rock formations
… in log interpretation across interbedded rock formations. This situation routinely gives rise to inaccurate assessments of in-place hydrocarbon reserves. To gain better understanding of tool measurement behavior in interbedded sequences due to limitations of vertical resolution (resolution …
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Rock Features of the Upper Klamath Basin: An Integrated Approach to Identification
Rock features are human-made rock structures, often created by native peoples in the past and currently recorded as archaeological sites. In the Upper Klamath Basin of Oregon/California, these features are often difficult to identify. As a result, some features are left unrecorded and unprotected …
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Numerical modeling of tool-rock interaction in laminated formations
… model of the chip formation process in laminated rock formations has been developed. The model uses a finite element approach to simulate the anisotropic behavior of laminated rock formations. The finite element program has been developed with the assumption of two-dimensional plane strain. …
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Estratégias baseadas em reticulação de polímeros para evitar perdas de circulação em poços de petróleo
… avoid fluid influx, such as gas or oil, from the rock formation into the well. The need for a high hydrostatic pressure can lead to fractures in the rock formations, or they can be originally fractured, leading to a loss of drilling fluid into the formation and therefore the reduction of the …
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in :: out
… project began with the horizontal lines of the rock formations located throughout the site, and through utilization of the characteristics of the five elements of Feng Shui, innumerous decisions were made concerning orientation, material, and sense of place; allowing one to experience a sense of …
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Geology of the Poplar Hill area Giles County, Virginia
… County, Virginia and contains marine sedimentary rocks that range in age from Middle Cambrian to Middle Bilurian. The formations trend northeast in narrow outcrop belts. The summit of Walker Mountain is the southeastern boundary of the area and the southern slopes of Brushy and Buckeye Mountains …
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NMR studies of carbon dioxide sequestration in porous media
… the behaviour of CO2 stored in geological rock formations over a range of length- and time-scales is crucial. The work presented in this dissertation contributes to the knowledge in this field by investigating the two-phase flow and entrapment processes of CO2, as well as other relevant …
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Acoustic analysis of rock cutting process for impregnated diamond drilling
The rock cutting industry has experienced important changes with the introduction of diamond-based drilling tools in the last few decades. Impregnated diamond (ID) bits are part of that introduction and their main use is to drill hard and abrasive rock formations. ID core drilling has emerged as …
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Electrical noise model for detection circuitry of an NMR-based formation evaluation Tool
… of NMR to evaluate the porosity of the earth's rock formations. Although the tool boosts the signal-to-noise ratio (SNR) to a level sufficient for productivity analysis, SNR improvement is a continuing goal to improve signal quality and provide better results to help optimize the drilling …
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The Analysis of Weak Rock Using the Pressuremeter
… range of materials from very soft clay to weak rock. Due to limitations of other testing devices, the pressuremeter is one of the few instruments capable of capturing stiffness and strength properties of weak rock. However, data collected is only useful if the material tested is properly modeled …
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The geology of the Scotia Gold Property number two
… based on the study of both, the thin sections of rock and the polished opaque sections of the ore. The property or the company described in this report is situated in southeastern Manitoba, in the Rice Lake Mining Area, approximately 150 miles northeast of the city of Winnipeg and within ten miles …
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Home range, habitat use, behavior, and morphology of the Gettysburg vultures
… vultures only used caves within forested diabase rock formations. While feeding, birds preferred pasture and cropland and avoided forest and urban areas. Farm carrion was an important food resource for both species. Black vultures fed more on carrion greater than 15 kg in size than did turkey …
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Hydrogeology of the Penoyer Valley region, Central Nevada
… This connection is facilitated by carbonate rock formations found in the Worthington Mountains and the Timpahute Range, located on the eastern and southern perimeter of Penoyer Valley. Although Penoyer Valley and Garden Valley are hydraulically connected, it is likely that groundwater does …
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Characterization of the binders in the rock art of Cueva La Conga, Nicaragua
… which little is known archaeologically. The rock art, which includes carved rock formations as well as paintings and handprints, may provide clues about the past people and culture of this area. Archaeologists want to know if the paintings were influenced by the Maya to the north, or the …
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Geology of the New Castle area, Craig County, Virginia
… 2) The study and descriptions of the rock formations, with detailed measurements of several stratigraphic sections; 3) An analysis of the geologic structure, and; 4) An interpretation of the geologic history of the area. Methods of Study: Geologic mapping of the area on a scale of …
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Hydraulic Fracturing Water Recycle through Optimal Ultrafiltration and Nanofiltration Membranes System Design
… water, sand, and additives to create fissures in rock formations and discharge oil and gas to the surface. The average amount of water used per well is approximately 4.4 million gallons. The large water demand and the complexities involved in wastewater treatment make this process very expensive …
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Development of graphical user interface tools for optimal fluid management in shale oil and gas operations
… is a technique to extract oil and gas from shale rock formations that is characterized by the input of large quantities of pressurized water into horizontal wells. The high pressure fluid generates cracks in the shale formation that release the gas, oil, and other constituents into the fluid. The …
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Diversity and ecology of anurans at selected streams in Taman Negara Johor Endau Rompin, Malaysia
… 248 million years old based on the features of rock formations. This study was carried out only at Peta area, for nine months. This study only focused on three streams namely; Sungai (Sg.) Da'ah, Sg. Semawak, and Sg. Kawal using the Visual Encounter Survey (VES) method. Twenty species of …
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