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The AAPG/Datapages Combined Publications Database
Showing 16,606 Results. Searched 200,663 documents.
Convolution model theory-based intelligent AVO inversion method for VTI media
Yuhang Sun, Yang Liu, Hongli Dong
International Meeting for Applied Geoscience and Energy (IMAGE)
... based on Bayes theorem: Applied Geophysics, 8, 293–302, doi: https:// doi.org/10.1007/s11770-010-0306-0. Rüger, A., 1996, Reflection coefficients...
2023
Drilling Using AvO to Reduce Uncertainties in D35 Infill
Meh Jabeen Zainuddin
Geological Society of Malaysia (GSM)
.... transmission coefficients of plane longitudinal and The AvO results, particularly the separation transverse waves. Geophys. Prosp., 9, 485-503...
1998
Ultrasonic wave velocities measurements and seismic anisotropy at Karari gold deposit: Implications for gold exploration
Andre Eduardo C. M. de Souza, Stephanie Vialle, Andrej Bona
Petroleum Exploration Society of Australia (PESA)
... the reflection coefficients between each rock group. To obtain these reflection coefficients (displayed in Table 1), we considered normalincidence of P...
2019
Seismic Anisotropy Modeling from Well Log in Talang Akar Formation, South Sumatra, Indonesia; #41360 (2014)
Thariq Guntoro, Intan Andriani Putri1, and Dwa Desa Warnana
Search and Discovery.com
... on Seismic Anisotropy, Proceedings 15, Dhahran Geoscience Society, Manama, Bahrain, pp. 107-111. Ruger, A., 1997, P-wave reflection coefficients...
2014
Joint inversion of AVO and time-shift for geomechanical strain evaluation in a UKCS field
Samarth Bachkheti, Colin MacBeth
International Meeting for Applied Geoscience and Energy (IMAGE)
... an approximate expression for P-wave reflection coefficients across an interface in weakly anisotropic media with small discontinuities in elastic properties...
2022
DAS noise attenuation using wavelet stack
Zhou Yu, Zhaojun Liu, Ge Zhan, Peng Cheng, Bin Wang, Weihong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
... subsurface information. It is the noise for reflection seismology and can significantly degrade the quality of the image. This noise is high amplitude...
2022
Synthetic Seismograms: Part 7. Geophysical Methods
Kari Rekoske, David Hicks
AAPG Special Volumes
... by the program to compute reflection coefficients at each interface between contrasting velocities. 4. A wavelet is chosen that has a frequency...
1992
AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction
David W. Bell
AAPG Special Volumes
... accurate time-to-depth information. Check shots are direct transmission measurements at seismic frequencies of traveltime from a surface source...
2001
Bottom Currents And Sediment Transport on San Pedro Shelf, California
David E. Drake, David A. Cacchione, Herman A. Karl
Journal of Sedimentary Research (SEPM)
...), GEOPROBE (Geological Processes Bottom Environmental) tripods were used to measure bottom currents, pressure, and light transmission and scattering...
1985
Estimation of Total Organic Carbon (TOC) Content of Shale from AVO Inversion: A New Crossplot Approach Based on Zoeppritz Equations
Un Young Lim, Richard Gibson Jr., Nurul Kabir
Unconventional Resources Technology Conference (URTEC)
... content (TOC) in shale increases. Although Rüger (1997) proposed an equation for P-wave reflection coefficients in anisotropic media, it only provides...
2019
Current Trends in Geophysics
H. E. Stommel, J. M. Graul
Indonesian Petroleum Association
... an "impedance" log. The contrasts in impedance values yield a set of reflection coefficients (the "stickogram"). Using an estimate of a seismic wavelet (perhaps...
1978
Seismic Stratigraphy and Global Changes of Sea Level: Part 6. Stratigraphic Interpretation of Seismic Reflection Patterns in Depositional Sequences: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation
R. M. Mitchum Jr., P. R. Vail , J. B. Sangree
AAPG Special Volumes
... reflection will be continuous if the reflection coefficient of the unconformity is significantly greater than the reflec ion coefficients of the underlying...
1977
Abstracts: Brine-methane Substitution: The Seismic Response of Coalbeds; #90173 (2015)
Diane J. Lespinasse and Robert J. Ferguson
Search and Discovery.com
... of the reflection coefficients with the incidence angle using the Zoeppritz equation. We also use the Zoeppritz equation to evaluate the variations...
2015
3-D AVO Analysis and Modeling Applied to Fracture Detection in Coalbed Methane Reservoirs
Antonio C.B. Ramos, T.L. Davis
Rocky Mountain Association of Geologists
.... However, reflection coefficients derived for isotropiJisotropic and isotropidanisotropic interfaces are not significantly different when velocity...
1997
Seismic Stratigraphy and Global Changes of Sea Level: Part 5. Chronostratigraphic Significance of Seismic Reflections: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation
P. R. Vail, R. G. Todd , J. B. Sangree
AAPG Special Volumes
... coefficients and spacing of the stratal surfaces change laterally. Commonly, a given seismic reflection character transgresses reflection continuity as a rock...
1977
Creating Singularity Order Attribute of Seismic Signals Using Continuous Wavelet Transform (CWT) for Stratigraphic Interpretation Tools
A.M. Ustad, M.S. Jaya, F.J. Herrman
Indonesian Petroleum Association
... as dis (appearance) of local maxima in wavelet transform coefficients. The output of this attribute produces a map of singularity structure. It can...
2007
The Petrology of Some Pennsylvanian Black "Shales"
Charles E. Payton, Leo A. Thomas
Journal of Sedimentary Research (SEPM)
.... The siltstones have an average mineral composition within the range of sub-graywacke to graywacke. Sorting coefficients range from 1.9 to 4.3...
1959
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Vertical Seismic Profiling--A Measurement that Transfers Geology to Geophysics: Chapter 2
B. A. Hardage
AAPG Special Volumes
... subsurface impeda ce contrasts, to verify the accuracy of reflection coefficients derived from log data; (4) using the measured frequency losses that occur...
1985
Genesis 4D Project — Design and Execution Overview
Bernard Regel, Tom Hudson, John Bretches, Phil Inderwiesen, Pat Condon, James Rickett, Frank Descant
GCAGS Transactions
... darcies), excellent net sand (.95 average), and large reflection coefficients (.18 average). The lesser quality "C" facies is made up of laminated...
2005
Deterministic and Statistical Wavelet Processing
Lee Lu
Southeast Asia Petroleum Exploration Society (SEAPEX)
... by the following examples: Example 1 A record of synthetic data representing reflection coefficients is generated (Figure 7a (a)). A non-minimum phase wavelet...
1980
Physical Properties of Carbonate Reservoirs in South Sumatra
B. Sudewo, A. R. Suhendan, S. Chacko
Indonesian Petroleum Association
... overlying them. This means that zero-to-negative reflection coefficients would exist at the interfaces between them, causing "dim spots" or "polarity...
1987
Radio Transmission and Geology: GEOLOGICAL NOTES
Edmund M. Spieker
AAPG Bulletin
...------------------------------ which separates the state into four zones graded as to effectiveness of transmission, is a generalized reflection of the geologic map...
1936
Abstract: Recent Advances in the Characterization of Unconventional Reservoirs with Wide-azimuth Seismic Data; #90187 (2014)
Ran Bachrach, Sagnik Dasgupta, Colin Sayers, Josimar Silva, and Stefano Volterrani
Search and Discovery.com
... of Geophysical Research, Vol. 105, p. 2981-3000. Psencik, I. , and J. Martins, 2001. Properties of weak contrast PP reflection/Transmission coefficients...
2014