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The AAPG/Datapages Combined Publications Database
Showing 58,755 Results. Searched 195,364 documents.
Interpretation of storage and retrieval major-ion chemistry, with emphasis on significant sulfate and sodium concentrations in the White River watershed, northwestern Nebraska, United States
Jon C. Atkinson
Environmental Geosciences (DEG)
... of the White River that generally lack even small groundwater reservoirs. The soils are compact and clayey, and infiltration is low, hence promoting...
2019
Correlation of the Bishop Ash, a Pleistocene Marker Bed, Using Instrumental Neutron Activation Analysis
G. A. Borchardt , P. J. Aruscavage, H. T. Millard, Jr.
Journal of Sedimentary Research (SEPM)
.... T. Millard, Jr. 1972 Vol. 42 No. 2. (June), Neutron activation analyses confirmed a previous correlation of a white rhyolitic volcanic ash bed...
1972
Chapter Five: Reservoir Identification
Alistair R. Brown
AAPG Special Volumes
... of Mexico: The Leading Edge, v. 22, p. 300–309. Ostrander, W. J., 1984, Plane-wave reflection coefficients for gas sands at non-normal angles...
2011
Abstract: Characterizing Dipping Fractures from P-wave Amplitude Versus Azimuth Studies; #90187 (2014)
Jon Downton and Hampson Russell
Search and Discovery.com
... as a function of dip. The 2nd FC equation (10) is a weighted sum of the w12 and w22 coefficients (equations 19 and 20). For small angles of incidence...
Unknown
Repeatability of Three Instruments Used to Determine the Undrained Shear Strength of Extremely Weak, Saturated, Cohesive Sediments
Joseph H. Kravitz
Journal of Sedimentary Research (SEPM)
... rarely exceeds an activity level of 0.41 (White, 1955); however, the samples contain small amounts of vermiculite and illite End_Page 1031...
1970
Chapter Eight: Horizon and Formation Attributes
Alistair R. Brown
AAPG Special Volumes
... values at the crest of a reflection with a precision of about a quarter of a millisecond. The horizon attribute extracted at the crestal time carries...
2011
Seismic signatures of pore fluid mobility in heterogeneous reservoirs
Qiuzi Li, Brent Wheelock, Tuan Tran, Fadil Santosa
International Meeting for Applied Geoscience and Energy (IMAGE)
...al and analytical results of reflection coefficients for Third International Meeting for Applied Geoscience & Energy 10.1190/image2023-3908530.1 Page 872 © 20...
2023
Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)
Jon Downton and Benjamin Roure
Search and Discovery.com
..., the coefficients A, B and C are also a function of the normal and tangential weaknesses. For small angles 2 of incidence, the n = 2 F.C....
2014
Effect of Anisotropy on Apparent Resistivity Curves
Sylvain J. Pirson
AAPG Bulletin
... to the bedding plane: 204 ohm feet Another series of measurements was made at the same location on a laminated fine white sandstone (Benton formation...
1935
Post Migration Processing of Seismic Data
Dashuki Mohd.
Geological Society of Malaysia (GSM)
... as a convolution of the source wavelet with a series of reflection coefficients. N-l x(n) = r(n) * wen) + n(n) = L r(n)w(n - k) + n(n) (1) k=O n = 0...
1994
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
The Use of Back-Scattered Electron Imaging for the Petrographic Study of Sandstones and Shales
S. H. White, H. F. Shaw, J. M. Huggett
Journal of Sedimentary Research (SEPM)
... and White 1982). The JXA 733, with its small-probe diameter and high-resolution electron optics, especially in the back-scattered mode of operation...
1984
Peusangan–C1 Reef Interpretation with Top Reef Transparent to Seismic
L. B. Hinton, W. S. Atmadja, Suryo Suwito P.
Indonesian Petroleum Association
... shows a sequence of reflection coefficients of some magnitude at the top of the reef, however the reflection amplitude at the top of the reef...
1987
A Polynomial Model for Lateral Thickness Decay of Submarine Channel–Levees
Hesham Ezz, Alessandro Cantelli, Jasim Imran
Journal of Sedimentary Research (SEPM)
...-law gives rather small values. The high regression coefficients notwithstanding, the plots of the logarithmic and exponential models in Figure 3 show...
2014
Gas Hydrate Offshore Vancouver Island, Northern Cascadia Margin
M. Riedel, Eleanor C. Willoughby, Nigel Edwards, Roy D. Hyndman, George D. Spence, Ross Chapman, Marc-Andre Chen, Ivana Novosel, Katrin Schwalenberg
AAPG Special Volumes
..., and detection: AGU Monograph 124, p. 4165.Warner, M., 1990, Absolute reflection coefficients from deep seismic reflections: Tectonophysics, v. 173, p...
2009
Base of the Crust: Seismological Expression, Geological Evolution, and Basin Controls: Chapter 4: Concepts
J. Hall
AAPG Special Volumes
... and non-porous strata can produce the required reflection coefficients provided the porosity difference is around 1%; the presence of brines in such p...
1989
Review: Geophysical Methods for Karst Detection and Mapping
T. L. Dobecki
Houston Geological Society Bulletin
... rock. A void/rock interface creates a significant acoustic impedance contrast which results in large reflection coefficients (nearly 100% of the seismic...
1990
An Effective Thin Reservoir Prediction Method Which Combines Spectral Inversion and Wide-Band Ricker Wavelet Filtering
Search and Discovery.com
N/A
AVO Inversion in Marine Gas Hydrate Studies; #41603 (2015)
Marc-André Chen, Stan Dosso, George Spence, Michael Riedel, Roy Hyndman
Search and Discovery.com
... reflection coefficients as a function of BSR incidence angles are required, and a true amplitude data processing scheme was implemented. The AVO data...
2015
Seismic and Structural Analysis of a Trenton-Black River Hydrothermal Dolomite Reservoir, by Justine Sagan and Bruce Hart, #40129 (2004).
Search and Discovery.com
2004
Paleostructure and Lithologic-Variation Coefficients: REPLY
S. T. Ovnatanov , G. P. Tamrazyan
AAPG Bulletin
...Paleostructure and Lithologic-Variation Coefficients: REPLY S. T. Ovnatanov , G. P. Tamrazyan 1971 1358 1360 55 8. (August) Jones, T. A., 1970...
1971
Marchenko redatuming and seismic interferometry based internal multiple prediction for salt structures
Zhiwei Gu, Jianhua Geng, Ru-Shan Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... (SI). The second method emphasizes primary reflection retrieval (PRR) by capturing primary reflections without adaptive subtraction. It is derived from...
2023
An Exact Method for Characterization of Grain Shape
Robert Ehrlich, Bernhard Weinberg
Journal of Sedimentary Research (SEPM)
... greatly with increasing harmonic number, the first few coefficients account for the bulk of roughness coefficient but occupy only a small space...
1970
Influence of Organic Matter in Soils on Radar-Wave Reflection: Sedimentological Implications
Remke L. van Dam,, Elmer H. van den Berg, Sytze van Heteren, C. Kasse, Jeroen A.M. Kenter, Koos Groen
Journal of Sedimentary Research (SEPM)
... reflection coefficients are small. When the various soils are closely spaced it is best to measure in saturated sediment such that reflected pulses do...
2002
Workflow for Nonlinear AVO Inversion to Estimate Seismic Anisotropy and Geomechanical Properties of Shale
Un Young Lim, Richard L. Gibson Jr., Nurul Kabir
Unconventional Resources Technology Conference (URTEC)
... estimates of anisotropy of geomechanical properties. We first reformulate the exact Zoeppritz equations for reflection coefficients in terms of four...
2019