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 17 of 17 for “"Seismic profile"”.
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The vertical seismic profile : imaging heterogeneous media
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1986.
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A Multicomponent Walkaway Vertical Seismic Profile Experiment in a Heavy Oil Reservoir
A multicomponent walkaway VSP experiment was successfully processed and used to predict rock properties in a heavy oil reservoir. Post-stack image and pre-stack gathers were made for inversion and AVO analysis. A common shot reflectivity gather was also created for AVO study at the VSP well …
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Crustal structure of the Eratosthenes Seamount, Cyprus and S. Turkey from an amphibian wide-angle seismic profile
… recorded a 650 km long amphibian N-S wide-angle seismic profile, extending from the Eratosthenes Seamount (ESM) across Cyprus and southern Turkey to the Anatolian plateau. The aim of the project is to reveal the impact of the transition from subduction to continent-continent collision of the …
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Late Quaternary Louisiana Shelf-Margin Deltaic Deposition, North-Central Gulf of Mexico
… unanalyzed two-dimensional, highresolution seismic profile records (Acadiana 86 and Acadiana 89), geotechnical foundation boring data (Coleman and Roberts, 1988a), and an industry lease block survey report (Cole, 1983). Seismic sequence stratigraphic methods are employed in this study to …
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Reservoir characterization using intelligent seismic inversion
… challenge in reservoir characterization studies. Seismic data is among those different types of data, which is usually used by geoscientists for structural mapping of the subsurface and making interpretations of the reservoir's facies distribution. Yet, it has been a common aim of geoscientists to …
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Modeling velocity dispersion In Gypsy site, Oklahoma
… combined. The data used are acquired from three seismic sources; Full Wave Sonic (FWS), Bender log, and Vertical Seismic Profile (VSP) with estimated central frequencies 10kHz, 1kHz, and 100Hz, respectively. The modeling was done using the Discrete Wavenumber (DWN) method and the Logarithmic …
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Full wavefield inversion methods for monitoring time-lapse subsurface velocity changes
Quantitative measurements of seismic velocity changes from time-lapse seismic experiments provide dynamic information about the subsurface that improves the understanding of the geology and reservoir properties. In this thesis, we propose to achieve the quantitative analysis using full wavefield …
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High-Resolution Seismic Characterization of Shallow Sedimentary Structure for Freshwater Resources and Karstic Voids
… encompasses a comprehensive exploration of seismic source evaluation, high-resolution characterization of near-surface coastal sediments, and the development of novel methodologies for subsurface void detection. The research integrates various geophysical measurements and numerical modeling …
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Teleseismic imaging of the Slave craton and implications for the assembly of cratonic lithosphere
… of the cratonic lithosphere. Secondly, I image seismic discontinuities in the lithosphere using receiver-function analysis of converted P-to-S waves. The resulting seismic profile shows a pronounced low velocity discontinuity at -100 km depth beneath the central Slave craton. This seismic …
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Subsurface imaging with reverse vertical seismic profiles
… imaging results from a 3D reverse vertical seismic profile (RVSP) dataset measured at a hydrocarbon bearing pinnacle reef in northern Michigan. The study presented many challenges in seismic data processing and imaging, as the survey geometry was unique in several ways. Reverse VSP, which …
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Well log petrophysics and re-interpretation of the exploration target intervals in the southern Walvis basin
… with focus on reservoir unit’s prognoses from seismic profile and comparing them to those of volcanics. Characterization and differentiation of turbidite reservoir units from volcanic intervals involved observing actual petrophysical characteristics and relating those characteristic to seismic …
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A Conceptual Model of Groundwater Flow at the Midway, Utah Fish Hatchery as Constrained by Geochemical, Physical Hydrogeological, and Geophysical Methods
… Two orthogonal shallow high-resolution seismic reflection profiles indicate substantial heterogeneity in the subsurface at the level of the confined systems at the hatchery. Several north-south trending normal discontinuities were interpreted as possible faults from the seismic profile …
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Full waveform inversion combining rock physics for seismic reservoir characterization and monitoring
… part of reservoir characterization. Most current seismic workflows in this field are based on amplitude variation with offset (AVO). Full waveform inversion (FWI) methods, although computationally more complex than AVO approaches, can produce more accurate elastic models by extracting the full …
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Seismic characterization of geothermal reservoirs by application of the common-reflection-surface stack method and attribute analysis
… in the first phase. With the help of active seismic methods high-resolution images of the geothermal reservoir can be delivered. This allows potential transport routes for fluids to be identified as well as regions with high potential of heat extraction to be mapped, which indicates favorable …
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Surface heat flow and lithospheric thermal structure of the northwestern Arabian Plate
… along an E-W traverse based on the DESIRE seismic profile (Mechie et al., 2009). The model comprises the entire lithosphere down to the lithosphere–asthenosphere boundary (LAB) involving the most recent knowledge of the lithosphere in pre-Oligocene time, i.e., prior to the onset of rifting …
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Elastic Properties of Rock Salt: Lab Measurements, Numerical and Physical Modeling, and Gulf of Mexico Well Logs and VSP
To achieve high-resolution subsurface imaging and lithology description, the elastic properties of rock salt are investigated using ultrasonic lab measurements, well logs, and a salt proximity VSP survey. In the lab, I analyzed the effects of composition, crystalline structure, pressure, and …
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New Constraints On the Age and Magnitude of Reactivation of the Camden Fault, South Carolina
<p>Integration of 2-D high-resolution shallow seismic reflection and refraction, gravity, 2-D electrical resistivity, Ground Penetrating Radar, and borehole data were used to image the shallow subsurface expression of the Camden fault. The preferred model for the fault geometry suggests at least 28 …