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The AAPG/Datapages Combined Publications Database
Showing 19,696 Results. Searched 195,452 documents.
High Performance Seismic Data Migration for High Resolution Interpretation
C. N. Chernoff
Indonesian Petroleum Association
...., 1980, Wave equation migration with the accurate space derivative method: Geophysical Prospecting, v. 28, p. 60-70. Judson, D. R., Lin, J., Schultz...
1983
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
..., A new class of propagation models based on a factorization of the Helmholtz equation: Geophys. J. Roy. Astr. Soc., 80, 439-461. Gazdag, J., 1978, Wave...
Unknown
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
..., A new class of propagation models based on a factorization of the Helmholtz equation: Geophys. J. Roy. Astr. Soc., 80, 439-461. Gazdag, J., 1978, Wave...
Unknown
Rock-Fluid Interaction Impact on Geomechanical and Acoustic Properties in Shale Reservoirs: Anisotropic Grain Contact Adhesion Model
Binh T. Bui, Azra N. Tutuncu
Unconventional Resources Technology Conference (URTEC)
... equation. The tortuosity, τ, is used to account for the tortuous form of the pore. Comiti and Renaud (1989) determined the tortuosity of spherical...
2014
Mathematical modeling of microcrack growth in source rock during kerogen thermal maturation
Yunfei Yang, and Gary Mavko
AAPG Bulletin
...., and W. Proffer, 1984, Engineering formulas for fractures emanating from cylindrical and spherical holes: Journal of Applied Mechanics, v. 51, no. 4, p...
2018
Flexural and Full Wave Logging Using the Low-Frequency Dipole Sonic
David E. Sharbak
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
.... The transmitter emits a cylindrical compressional wave that travels away from its source. The compressional wave strikes the borehole wall where both...
1994
The Movement of Gravel by the Alga Fucus Vesiculosus (L.) on an Arctic Intertidal Flat
Robert Gilbert
Journal of Sedimentary Research (SEPM)
..., and the plant is increasingly affected by wave and current action. Windrows of Fucus debris at the high tide line were examined in a 1-km section of beach...
1984
Seismic Modelling in 3D for Migration Testing
Search and Discovery.com
...-Interscience, ISBN-10: 0-471-23816-3, 413 pages. Gazdag, J., 1981, Modeling of the acoustic wave equation with transform methods: Geophysics, 46...
2013
Pulsed Power Plasma Stimulation Technique Experimental Study on Single Pulse Test for Fractures Initiation
Yue Xiao, Waylon House, Ebru Unal, Mohamed Soliman
Unconventional Resources Technology Conference (URTEC)
... direction. In both cylindrical and spherical coordinate systems, the created B field in homogeneous media would be in the angular (ϕ) direction...
2018
The Threshold of Grain Motion Under Oscillatory Flow in a Laboratory Wave Channel
John R. Dingler
Journal of Sedimentary Research (SEPM)
... is the fluid density, g is the acceleration of gravity, and do is the near-bottom orbital diameter. The equation um = d0/T, (2) where T is the wave...
1979
A new technology for the characterization of microfractured reservoirs (test case: Unayzah reservoir, Wudayhi field, Saudi Arabia)
Mohammed S. Ameen, Ernest A. Hailwood
AAPG Bulletin
..., borehole images, full-wave sonic logs, and vertical seismic profile (VSP) logs offers comprehensive characterization and considerably reduces...
2008
Geological Factors Influencing Porosity Estimates From Velocity Logs
Roberto Sarmiento
AAPG Bulletin
... the variables mentioned. The resulting equations give more accurate porosity estimates than the time-average equation, which is in widespread use...
1961
Abstract: Multi-component or Vector Dip Filtering Using the S-transform; #90187 (2014)
Kristof De Meersman and Majda Mihoub
Search and Discovery.com
... the dominant local (in time, frequency and spatial coordinates) polarization and dip properties in multi-component seismic data. We then adapt this method...
2014
Geotechnical Applications in Soft Sediments: Section 2
Wayne A. Dunlap
AAPG Special Volumes
.... and P. Arnold (1973). Movements and Forces Developed by Wave-induced Slides in Soft Clays, Proceedings, 5th. Offshore Technology Conference, Houston...
1981
-- no title --
Ehsan, Athar
Search and Discovery.com
... are the position in the regular-grid coordinates. We obtained the second derivative of the modified acoustic wave equation incorporating the variable...
Unknown
Abstract: 3D Time Domain Full Waveform Inversion Based on Multiscale Adapted Variable Grid Method Case Study Majunga Basin East African Coast; #91204 (2023)
Mukiibi Ssewannyaga Ivan, Jian-Ping Huang, Zi-Ying Wang, Jidong Yang, Jin Keji
Search and Discovery.com
... grids results into inaccurate solution of the wave equation; also it results into redundancy mainly in the deep high velocity zones resulting...
2023
Prediction of Reservoir Rock Permeability Reduction by Using Laboratory Acoustic Measurement
Bambang Widarsono, Fakhriyadi Saptono
Indonesian Petroleum Association
... was taken as minimum below which difficulties were encountered in picking P-wave and S-wave first arrivals). Results of calculation using Equation 10 testify...
1998
Abstract: Two Prestack Anisotropic Depth Migration Methods for Tilted TI Media; #90211 (2015)
Xiang Du, John Bancroft, Don Lawton, and Larry Lines
Search and Discovery.com
... continuation methods that use one-way wave equation to extrapolate wavefields, while ART is a full wave equation method. We focus our research...
2015
ABSTRACT: Time Extrapolation of the Double-Square-Root Equation: Prestack Exploding Reflector Modeling and Migration, by Alkhalifah, Tariq A.; Fomel, Sergey; #90141 (2012)
Search and Discovery.com
2012
Acoustic modelling with elastic AVA effects
Robin P. Fletcher, James Hobro, James Rickett
International Meeting for Applied Geoscience and Energy (IMAGE)
...-free shear wave propagation. In this paper we propose a new acoustic wave equation, derived using linearized plane-wave reflection coefficient theory...
2023
Permeability prediction in chalks
M. Monzurul Alam, Ida Lykke Fabricius, Manika Prasad
AAPG Bulletin
... permeability and porosity from core data were first examined using Kozeny's equation. The data were analyzed for any correlations to the specific surface...
2011
Imaging in Complex Environments Common Reflection Angle Migration
Graham A. Winbow
Indonesian Petroleum Association
... from the form of a typical velocity model. Thus more computationally intensive approaches such as Wave Equation Migration are not necessarily required...
2007
Acoustic Properties of "Young" Carbonate Rocks, Odp Leg 166 and Boreholes Clino and Unda, Western Great Bahama Bank
J.A.M. Kenter, F.S. Anselmetti, P.H. Kramer, H. Westphal,, M.G.M. Vandamme
Journal of Sedimentary Research (SEPM)
... cemented to uncemented and compacted background sediments have velocities that, at a given porosity, fall below the time-average equation for calcite...
2002
Field Experiments on Vertical Mixing of Sand in the Surf Zone
Nicholas C. Kraus
Journal of Sedimentary Research (SEPM)
... to account for breaker type or grain size (King 1951). The above relation holds for moderate wave conditions; it is not obvious that Equation 5...
1985
Mainstream Mantle Convection: a Geologic Analysis of Plate Motion: DISCUSSION
Z. F. Danes
AAPG Bulletin
.... The wave length of the perturbation, EQUATION (2) is equal to one-half of the earth's circumference, 20,000 km. Considering only the horizontal...
1973