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The AAPG/Datapages Combined Publications Database
Showing 1,445 Results. Searched 200,636 documents.
Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)
Kristof De Meersman and Marcelo Roizman
Search and Discovery.com
..., the conversion occurs at the base of, or at some internal interface within, the weathered zone. Second, we can assume near-vertical rays so...
2013
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
..., 1978) or maximum energy rays (Nichols, 1996) for example, or any other subset of the multimode wavefield. This ability is similar to that of finite...
2013
ABSTRACT CO2 Sequestration Monitoring in a Low Salinity Formation Water Environment, #90103 (2010)
Yang Xing Wang, Doug Murray, Tadashi Horie, Tukasa Yoshimura
Search and Discovery.com
... the rate of decay of thermal neutron capture gamma rays. High sigma indicates saline water and low sigma fresh water or hydrocarbon. As long as formation...
2010
TTI Wave-equation Migration of A 3-D Canadian Foothills Dataset
Search and Discovery.com
... wavefield, whereas Kirchhoff migration relies upon ray-paths which may have “shadows” (i.e. areas the rays don’t reach). This expectation seems to be borne...
2013
Abstract: Geosteering Techniques in Thin Coal Reservoirs; #90171 (2013)
Christine Burinda, Jason Pitcher, and Dennis Lee
Search and Discovery.com
... and well placement can be mapped. The SS3D combines the resistivities, gamma rays, images, geology, and well bore placement into one screen making a powerful...
2013
Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)
Kristof De Meersman and Marcelo Roizman
Search and Discovery.com
..., the conversion occurs at the base of, or at some internal interface within, the weathered zone. Second, we can assume near-vertical rays so...
2013
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
..., 1978) or maximum energy rays (Nichols, 1996) for example, or any other subset of the multimode wavefield. This ability is similar to that of finite...
2013
Abstract: Accurate and Automatic Computation of Refraction Statics in Large 3D Seismic Datasets; #90171 (2013)
Atul Jhajhria and Igor B. Morozov
Search and Discovery.com
... smoothed in the model (Figure 4). After the depth model was obtained, we derived surface-consistent statics by tracing vertically-propagating rays...
2013
Abstract: Separation of Geometric Spreading, Scattering and Intrinsic Attenuation in VSP data; #90187 (2014)
Amin Baharvand Ahmadi and Igor Morozov
Search and Discovery.com
... 28 *) V and V are the attenuation parameters in eq. (1) for vertical rays, s and s are the corresponding parameters for scattering, GS...
2014
Abstract: The Benefits of S-waves and Multicomponent Data for Surface Monitoring; #90187 (2014)
en Dando, Kit Chambers, Raquel Velasco, and Stephen Wilson
Search and Discovery.com
... components prior to stacking, where the projection weights depend on ray traced parameters for rays leaving the receivers that are incident upon the image...
2014
Abstracts: Determining Microseismic Event Locations by Semblance-weighted Stacking; #90173 (2015)
David W. Eaton, Jubran Akram, Andy St-Onge, and Farshid Forouhideh
Search and Discovery.com
... (Figure 1) and the lookup table is parameterized according to depth (z) and radial distance from the observation well (r). Note that most rays...
2015
Sub-Basalt Geology, Deepwater Offshore India; #41008 (2012)
Roberto Fainstein, Rajesh Kalra, S. Chandrashekkar, and C. Visweswara Rao
Search and Discovery.com
... due to near vertical rays penetrating the high-velocity basalt Wave propagation through basalt attenuates bandwidth Many sub-basalt reflections...
2012
Reservoir and Seal Potential in a Young Oceanic Basin: The Vavilov Basin (Central Tyrrhenian Sea), #50546 (2012)
Marzia Rovere, Fabiano Gamberi, Michael P. Marani, Federico Pittaluga, Elisa Leidi, Alessandra Mercorella
Search and Discovery.com
... as muddy turbidites. The TORB unit is composed of several thin (20 cm average) sandy turbidites (very fine to fine, occasionally medium sand, X-rays in Fig...
2012
Microseismic, 3D, and Log Image Data for Unconventional Targeted Drilling and Treatment; #41135 (2013)
Mark Houston
Search and Discovery.com
... Brittleness, Silica, Sand, Carbonate, Shale while Drilling GR1 • Fast neutron activation of Silicon emits gamma rays • Acquired at 10, 15, or 20 ft...
2013
Structure of the South-Eastern Nechako Basin, British Columbia: Results of Seismic Interpretation and First-Arrival Tomographic Inversion; #10717 (2015)
Nathan Hayward, Andrew Calvert
Search and Discovery.com
... on the structure and velocity of the nearsurface volcanic rocks. The focusing of model rays allows for estimation of the thickness of the Endako Group...
2015
Shallow VSP for Near-Surface Structure and Statics, #41535 (2015).
Soo-Kyung Miong, Robert R. Stewart, Joe Wong
Search and Discovery.com
... offset 15 m from the Lodge Well. Synthetic VSP Seismogram The P-velocity model used for creating the synthetic seismogram is developed by tracing rays...
2015
In-Situ Analysis of Traces, Minor and Major Elements in Rocks and Soils with a Portable XRF Spectrometer; #41836 (2016)
Anthony Thomas, Joachim Heckel, Dirk Wissmann
Search and Discovery.com
..., Scattered X-Rays as Internal Standards in X-Ray Emission spectroscopy: Analytical Chemistry, V. 30/8, p. 1306-1309. Figure 1. Calibrated mass...
2016
Living on the Moon: Lessons for Mars , #70279 (2017).
William A. Ambrose, Bruce L. Cutright
Search and Discovery.com
... M117752970ME Yamashita (2009) Surface Radiation Risks RAD on Mars Curiosity Galactic Cosmic Rays, Solar Particle Events Radiation equivalent to whole...
2017
Integrated Seismic Processing Challenges in Karstified Terrain of Papua New Guinea Fold Belt, #42521 (2020).
Subhash Chandra, Michael Szczepaniak, Patrick Haltmeier,
Search and Discovery.com
..., p. 378385. Ammon, C.J., and J.E. Vidale, 1993, Tomography without rays: Bulletin of the Seismological Society of America, v. 83, p. 509-528. Muller...
2020
Interpretation of Gamma-Ray Logs
James K. Hallenburg
Earth Science Bulletin (WGA)
.... That is to say, by counting the number of gamma pulses per second we can determine the amount of radioactive material present, emitting gamma rays. We can...
1973
Cased Hole Three Phase Oil Saturation Calculation Using Combination of PNC Sigma and C/O Logs: A Case Study in Duri Area 1 Steam Flood
Devi Muldi, Thomas A. Zalan, Subagio
Indonesian Petroleum Association
... of carbon/oxygen logs is gamma ray counts versus energy. It refers to the fact that high energy neutrons produce gamma rays when they collide with the nuclei...
2007
Carbon/Oxygen Logging in Indonesia
H. D. Smith Jr., W. E. Schultz
Indonesian Petroleum Association
.... The C/O technique uses inelastic gamma rays produced by bursts of fast neutrons into the formation to directly indicate the presence of liquid...
1977
Succesfull Heavy Oil and Extra Heavy Oil Prodution Testing Using Phasetester Vx* on Castilla for ECOPETROL
Imed Benlizidia
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... fractions. A single radioactive chemical source emits gamma rays at numerous energy levels. The attenuation of the gamma rays by the fluid is measured at two...
2009
Modeling Tectonic Structures by Synthetic Seismic Construction: Comparison with Local Fold and Thrust Front Development in the Permian Basin Province
Richard J. Erdlac, Jr., Douglas B. Swift
West Texas Geological Society
... or Zero Offset method, applies rays traced upward at 90° from each body and diffracting at intersecting bodies or layers in accordance with Snell...
2000
Hudson Bay Sea-Floor Photographs
F. G. Barber, E. H. Grainger, B. R. Pelletier
Atlantic Geology
... of their rays. An interesting posture shown by some crabs, with anterior body raised and forward legs slightly uplifted is apparent in some of the photographs...
1980