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Showing 1 to 20 of 38 for “"AVO"”.
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Reflection coefficients and azimuthal AVO analysis in anisotropic media
Includes bibliographical references (pages 140-147).
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Investigation into the applicability of AVO techniques to coal mine exploration
AVO (for Amplitude Versus Offset) is a seismic technology known in the oil industry for its ability to differentiate gas sands (over oil producing reservoirs) from wet sands (over non-producing reservoirs) in the Gulf of Mexico. Its applicability to a broad range of exploration fields has led to …
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Anisotropic geometrical-spreading correction and its application in azimuthal AVO analysis
Includes bibliographical references.
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Detection of fracture oreientation using azimuthal variation of P-wave AVO responses
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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Processing Case Study with AVO and Pore Pressure Analyses: Eugene Island, Gulf of Mexico
… attributes, well-log calibration, and AVO (Amplitude Versus Offset) and pore pressure analyses. While the supporting theory for each method has been well established, an integration of the methods to a real exploration project can be confusing for the uninitiated. Given a seismic …
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USING AVO ANALYSIS TO DETERMINE THE GAS RESERVOIRS IN THE SOUTH THRACE BASIN, NORTHWEST TURKEY
This study investigates gas reservoirs using AVO modeling and analysis for 3D pre-stack seismic data acquired by Turkish Petroleum Corporation in the Thrace Basin located in the northwest part of Turkey. The Thrace Basin is Turkey’s the most productive onshore gas province, and is the largest and …
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Accurate AVO modelling and reservoir characterisation of the upper cretaceous deepwater reservoirs in the Vøring Basin.
… brine and sand from shale. Amplitude vs offset (AVO) is a fundamental technique used for this purpose. AVO occurs when seismic sound waves encounter compressible Gas or Oil which reduces the compressional velocity or P-Velocity of the rock. Other properties, such as high porosity, can also cause …
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A Multicomponent Walkaway Vertical Seismic Profile Experiment in a Heavy Oil Reservoir
… 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 location. P and S-wave impedance, reflectivity, Vp/Vs and density were studied. AVO attributes and their crossplots were analyzed. Furthermore, AVO …
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A Theoretical Framework for Seismic Time-lapse Difference AVO Analysis with Validation on Physical Modelling and Field Data
… nonlinear theoretical results for the time-lapse AVO. The results show that the nonlinear components of the difference data interpretation scheme do not contribute significantly to estimate time-lapse AVO difference. This is consistent with the fact that the Pouce Coupe data set has a low baseline …
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Modeling Offset-Dependent Reflectivity for Time-Lapse Monitoring of Water-Flood Production in Thin-Layered Reservoirs
… (or amplitude) as a function of offset (AVO) which strongly depends on material properties, and hence, on the pore fluid. Repeat surveys, however, are very costly. To reduce the risks, the repeat survey is simulated on a computer for a number of different scenarios. Hence, the objectives …
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Reservoir characterization of the Hartselle Sandstone in the vicinity of Gorgas Power Plant, using amplitude variation with offset (avo)
… exhibit classic amplitude variation with offset (AVO) responses along the Hartselle Sandstone unit. Using an AVO intercept-gradient analysis along the target horizon (Hartselle Sandstone) across the seismic reflection profiles, the lateral extent of the hydrocarbon resource was mapped up to 1.3 km …
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Pore fluid pressure detection within the plate boundary fault interface of the Costa Rica convergent margin using AVO attributes
I conducted an amplitude vs. offset (AVO) analysis on newly acquired 3D seismic reflection data to detect elevated pore fluid content and pore fluid pressure along the Costa Rica convergent margin to address dewatering processes of subduction zone sediments. These data provide the highest quality …
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POROELASTIC AND SEISMIC CHARACTERIZATION OF HETEROGENEOUS RESERVOIR ROCKS
… properties. I further demonstrate that the AVO response at the interface is strongly impacted by the reflection dispersion behavior: the bright spot (Class III AVO) gets brighter at lower frequency, the dim spot (Class I AVO) gets dimmer at lower frequency, and the Class II AVO reservoir …
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Seismic characterization of fractured reservoirs (part I) ; Crustal deformation in the Tibetan Plateau (part II)
… media on the NMO velocities and azimuthal AVO responses in homogeneously fractured reservoirs, (2) to investigate the scattering characteristics in heterogeneously fractured reservoirs and the diagnostic ability of these characteristics to recover fracture density information, (3) to apply …
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Investigation of and correction for waveform changes arising from NMO stretch
… difficulty in extracting the exact wavelet for AVO analysis and seismic inversion. In order to quantitatively study waveform changes arising from NMO-stretch, two synthetic convolution models are generated with the Zoeppritz equations. For both models, the amount of frequency shift, called …
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Three-dimensional AVO analysis and anisotropic modeling applied to fracture characterization in coalbed methane reservoirs, Cedar Hill field, San Juan Basin, New Mexico
Includes bibliographical references (pages 227-234).
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Scattering of Seismic Waves from Arbitrary Viscoelastic-Isotropic and Anisotropic Structures with Applications to Data Modelling, FWI Sensitivities and Linearized AVO-AVAz Analysis
… on amplitude-variation-with-offset or azimuth (AVO/AVAz) analysis. By decomposition of the scattering potentials into isotropic, viscoelastic and anisotropic components, we specify the effects of anelasticity, inhomogeneity of wave and anisotropy on radiation patterns and the linearized AVO/AVAz …
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Estimation of seismic parameters from multifold reflection seismic data by generalized linear inversion of Zoeppritz equations
… from P-wave reflection amplitude-versus-offset (AVO) data recorded at the surface. The method has for its basis the inversion of the plane wave Zoeppritz. equations by generalized linear inversion (GLI) and bootstrapping. The Zoeppritz equations are converted into the time-offset domain by using …
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