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The AAPG/Datapages Combined Publications Database
Showing 34,503 Results. Searched 200,756 documents.
3D acoustic-elastic full-waveform inversion and migration of marine VSP data from Norway
Zhaolun Liu, Jrgen Hoffmann, Frederik J. Simons, Jeroen Tromp
International Meeting for Applied Geoscience and Energy (IMAGE)
...-component (4-C) data. In our study, we used only the three-component (3-C) geophone data, after 3-D rotation to the geographic orientation. The initial...
2022
Land FWI in the Sultanate of Oman: Challenges and advances on the road to high-resolution velocity
Mohammad Sheryar Farooqui, Yonghe Guo, Azza Al Hasni
International Meeting for Applied Geoscience and Energy (IMAGE)
... vibrator data was acquired in 2018 with a 1.5-86 Hz frequency sweep and simultaneous shooting with 25×50 m shot spacing and 25×200 m geophone node...
2024
Performance of elastic FWI for different wrapping angles of helical fiber in seafloor-deployed DAS
Shogo Masaya, Masanori Tani
International Meeting for Applied Geoscience and Energy (IMAGE)
... to focus on the effect of wrapping angles of HWF in DAS measurement. Therefore, we neglect the relation of Eq. (2) and then assume the following...
2024
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
...-wave data, it is first necessary to verify the vector orientation and fidelity of the OBC detectors, as recorded by the individual geophone...
Unknown
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
...-wave data, it is first necessary to verify the vector orientation and fidelity of the OBC detectors, as recorded by the individual geophone...
Unknown
Physical Properties of Carbonate Reservoirs in South Sumatra
B. Sudewo, A. R. Suhendan, S. Chacko
Indonesian Petroleum Association
... of porosity occurrence, and by corollary, its absence. In order to do this, there needs to be a good understanding of the effect of porosity change...
1987
From Arrhenius to CO2 Storage: Part XII: Model for Radiative Transfer of Fluxes in the Temperature-Stratified Atmosphere
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... a spherical cow in a vacuum …” A popular joke about modeling. NASA/ JSC the equation of radiative transfer which describes mathematically how...
2021
Evaluation of Wave-Generated Longshore Current Velocities and Sand Transport Rates on Beaches
Paul D. Komar
Special Publications of SEPM
... that equation 5 offers so zone Bowen Thornton 1971 1969a 1970b Longuet Higgins Komar 1975 These include a horizontal eddy mixing effect which...
1987
Abstract: Regular Grids Travel Time Calculation Fast Marching with an Adaptive Stencils Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... to demonstrate the effect of this algorithm. A numerical error analysis with a simple example The 2-D Eikonal equation, governing the traveltimes from...
2014
Estimating Drilling Direction for Optimum Production in a Fractured Reservoir
Richard C. Nolen-Hoeksema , J. H. Howard
AAPG Bulletin
... is then given by EQUATION (19) In effect, the fracture-flow interception rate for the two-dimensional case (equation 14) is multiplied by the constant...
1987
Abstract: Pseudo ARMA FX Deconvolution for Seismic Data Noise Reduction; #90174 (2014)
Mike Galbraith and Zhengsheng Yao
Search and Discovery.com
... by solving equation (1) and secondly, apply the filter to each frequency slice. Applying this filter is based on the assumption that seismic events...
2014
Application of Seismic Shear Wave Refraction for Subsurface Soil Dynamic Investigation at Bukit Changgang, Banting, Selangor
Abdul Rahim Samsudin, Khairul Anuar Mohd. Nayan, Umar Hamzah
Geological Society of Malaysia (GSM)
... for the survey was similar to the conventional P-wave seismic refraction with close geophone spacing of 1 metre. The seismic source was a weighted...
1997
Abstract: A Generic Procedure for Noise Suppression in Microseismic Data; #90187 (2014)
Yessika Blunda and Kit Chambers
Search and Discovery.com
... the procedure produces fairly modest gains in signal to noise ratio (typically 4-12 dB) both geophone ringing and correlated noise from tube waves...
2014
The Time Value of Money: Part 2. Economics and Risk Assessment
Robert S. Thompson
AAPG Special Volumes
... now, and $1.33 three years from now. The following equation represents the future value of a lump sum investment compounded annually: [EQUATION (1...
1992
Rock Properties Computed from Random Pore Size Distribution
A. W. Talash, Paul B. Crawford
Journal of Sedimentary Research (SEPM)
... across each pore and opening. The procedure uses a digital computer, random number generator, and an approximate range of pore diameters. The effect...
1965
Abstract: Research and Application of Rigless Radial Drilling Technologies in China and Middle East; #91210 (2025)
Chen Chen, Li Yingguang, Zhang Zhenyou, Diao Shunong, Zhang Guobin, Zhao Shufen, Liu Shanshan, Fu Jin
Search and Discovery.com
.... In addition, the bottom hole assembly (BHA) was optimized using the circle equation, and components such as the cutter blade, material, and PDM were...
2025
Bottom Photographs of Black Sea
Allyn C. Vine
AAPG Special Volumes
...------------------------ but the camera must have been close to bottom because the unique coil mark was not seen on the photograph taken by the second camera, which...
1974
Abstracts of Theses: Shallow-Water Ripple Marks at Pinery Park, Lake Huron, Ontario
Risk, M. J.
CSPG Bulletin
... curves suggests both settling and scouring processes modify the sediment. (Scour is the effect of a moving current on sediment grains at rest...
1968
High-order viscoelastic prestack seismic nonlinear frequency-dependent inversion method based on scattering matrix
Tianjun Lan, Zhaoyun Zong
International Meeting for Applied Geoscience and Energy (IMAGE)
... equation based on scattering matrix is derived. Through accuracy analysis, it is verified that the newly obtained second-order viscoelastic reflection...
2022
Calibration Equations for Settling Tubes: RESEARCH-METHOD PAPER
Richard E. Chapman
Journal of Sedimentary Research (SEPM)
...., 1851, On the effect of the internal friction of fluids on the motion of pendulums: Trans. Cambridge Philosophical Soc., v. 9, p. 8-106. (Not seen...
1981
Role of Temperature and Time on Organic Metamorphism: GEOLOGIC NOTES
P. E. Gretener , C. D. Curtis
AAPG Bulletin
... metamorphism--kerogen-to-hydrocarbon transformation--is a function of both temperature and exposure time. The effect of temperature is exponential...
1982
Application of Electrical Resistivity Measurements to Problem of Fluid Flow in Porous Media
M. R. J. Wyllie , M. B. Spangler
AAPG Bulletin
.... (February) The Kozeny equation for fluid flow through isotropic unconsolidated porous media is developed. It is shown that the utility and application...
1952
Equivalent reflection coefficient and AVO characteristics of the thin bed
Zhengyang Kuai, Danping Cao, Chao Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the equation will overlook the effect of all the internal multiples, 13 12 (5) rpp rpp B1t12 B2t12 . pp ps Equation 5 is the occasion...
2022
Seismic Survey in the North East Java Basin
Gatot Kariyoso, Ruslan Effendi, Sugijanto
Indonesian Petroleum Association
... of geophones per group : 24 in-line, 5 metres apart, 115 metres total geophone pattern length Spread length : split spread 2800 metres, with 300 metres...
1977
How Should We Measure Residual-Oil Saturation?
R. E. Wyman
CSPG Bulletin
...., 1961, Effect of reservoir environment on water-oil displacements: J. Petroleum Technology, v. 13, p. 579, June. 11Mungan, N., 1966, Certain Wettability...
1977