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The AAPG/Datapages Combined Publications Database
Showing 28,873 Results. Searched 196,956 documents.
The Asteroidal Impact Theory and Some Geologic Evidence for Asteroidal Impacts on Earth: A discussion of Direct and Indirect Data of Extraterrestrial Bodies and Their Motions and How They May Have Affected Earth Structures
Robert E. Cohenour, Byron J. Sharp
Utah Geological Association
... Comparisons 114 Available Energy in Large High-Velocity Bodies 117 Phenomenology of Large Meteoritic and Asteroidal Impacts 117 Some Suspected...
1987
Palaeohydraulic Interpretation Using Mathematical Models of Contemporary Flow and Sedimentation in Meandering Channels
John S. Bridge
Dallas Geological Society
..., Velocity profiles and bed shear stress over various bed configurations in a river bend: Earth Surf. Proc., v. 2, p. 281-294. Coleman, J. M., 1969...
1977
Palaeohydraulic Interpretation Using Mathematical Models of Contemporary Flow and Sedimentation in Meandering Channels
John S. Bridge
CSPG Special Publications
..., Velocity profiles and bed shear stress over various bed configurations in a river bend: Earth Surf. Proc., v. 2, p. 281-294. Coleman, J. M., 1969...
1977
Flow substrate interactions in aggrading and degrading submarine channels
Anjali M. Fernandes, James Buttles, David Mohrig
Journal of Sedimentary Research (SEPM)
..., J.P., 2010, Normalized velocity profiles of field-measured turbidity currents: Geology, v. 38, p. 563– 566, doi:10.1130/G30582.1. Xu, J.P., Noble, M.A....
2020
Depositional Effects of Flow Nonuniformity and Stratification Within Turbidity Currents Approaching a Bounding Slope: Deflection, Reflection, and Facies Variation
Ben Kneller, William McCaffrey
Journal of Sedimentary Research (SEPM)
..., that is dependent upon flow velocity, the reciprocal of flow height, and the density stratification. Low values of Fi result in decoupling of the flow...
1999
High-Resolution Visualization of Flow Interference Between Frac Clusters (Part 1): Model Verification and Basic Cases
Ruud Weijermars, Arnaud van Harmelen, Lihua Zuo, Ibere Nascentes Alves, Wei Yu
Unconventional Resources Technology Conference (URTEC)
... plots streamlines, the time-of-flight for fluid to fracs, velocity contours and pressure distribution around fracked wells. Independent simulations...
2017
Seismic Characterization of the Fiordland Gas-hydrate Province, New Zealand
Miko Fohrmann, Andrew R. Gorman, Ingo A. Pecher
AAPG Special Volumes
... polarity, implying a decrease in acoustic impedance; (2) they crosscut strata; and (3) they have a variable amplitude-versus-offset response...
2009
Imaging in Complex Environments Common Reflection Angle Migration
Graham A. Winbow
Indonesian Petroleum Association
... amplitude or first arrival). Illumination is an issue because significant lateral velocity variation produces significant laterally varying ray...
2007
Plans for Drilling the Mohole
Willard Bascom, J. S. Brown
CSPG Bulletin
... crust and the mantle, called the "moho," was defined by Professor A. Mohorovicic in 1910 as a discontinuity at which the velocity of seismic waves...
1960
Application of Rock Physics Models to Predict Rock Properties Away from Well Control: Block B, Natuna Sea, Miocene Producing Reservoir Case Studies
Putri Wisman, Retno Wijayanti, Carl Fakaruddin, John Hughes
Indonesian Petroleum Association
.... Mapping porosity from velocity exhibited flat trends of little predictive value which implies variable sorting and clay content in reservoir sands...
2013
Permeability of Unconsolidated Rocks: GEOLOGICAL NOTES
Frederick G. Tickell
AAPG Bulletin
.... The airflow through the sample is viscous. This can be checked by knowing the critical velocity of the water meniscus between two given points...
1935
CSEM Application in Carbonate Environment: A Case Study (Paper P46)
A. S. Saleh, S. K. Chandola, P. K. Lee, T. Velayatham, P. Kumar, M. S. Wahid, J. Beenfeldt
Geological Society of Malaysia (GSM)
... of the EM data was the extremely high and variable resistivity values observed especially at the target level. The earth models for 3D inversion were...
2012
Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods
Allan T. Long, R. C. Anderson
AAPG Special Volumes
... to amplitude and waveform changes concurrently. Feasibility modeling requires the following: (1) a depth-velocity model, (2) density and velocity...
1992
Production Logging: Part 9. Production Engineering Methods
James J. Smolen
AAPG Special Volumes
... be encountered, are evaluated using flowmeters with fluid identification devices. The most effective technique with radioactive tracers is the velocity shot...
1992
Foredeep: Wolfcamp Biohermal Mounds, Upton County, Texas
Charles Leung
AAPG Special Volumes
... in contact with the underlying Devonian carbonate (see velocity log; Figure 1). A good subregional seismic marker is the middle Wolfcamp shale. However...
1987
Stress vs. Strain Understandings and Misconceptions in their Application to Hydraulic Fracturing; #80261 (2012)
Randy Koepsell
Search and Discovery.com
.... These structures may generate significant local strain. • Production results between wells and profile within a single well are highly variable...
2012
Following Seismic Depth Imaging Technology for the Mexican Oil Industry: Experiences and Lessons Learned; #70232 (2016)
Sergio Chávez-Pérez, Mario A. Centeno-Miranda, Douglas A. Gómez-Reyes, Liliana Vargas-Meleza
Search and Discovery.com
... Academic Research Consortia SEP Stanford Exploration Project Stanford University, CA, USA Velocity Model Estimation, Seismic Modeling, RTM, FWI...
2016
The Makran Continental Margin: Structure of a Thickly Sedimented Convergent Plate Boundary: Convergent Margins: Field Investigations of Margin Structure and Stratigraphy
Robert S. White, Keith E. Louden
AAPG Special Volumes
... the first arrivals (see solid lines in Figure 5), which are overlain by unconsolidated sediment with a velocity gradient measured from several variable...
1982
GPU-based 3D anisotropic elastic modeling using mimetic finite differences
Harpreet Singh, Jeffrey Shragge, Ilya Tsvankin, Fatmir Hoxha
International Meeting for Applied Geoscience and Energy (IMAGE)
...: Updates of the stress variables obtained from the velocity variables defined on four different SSGs using cyclic MFD operators. Updated variable v [v...
2022
Quantitative Assessment of Hydrocarbon Charge Risk in New Ventures Exploration: Are We Fooling Ourselves?
Noelle B. Schoellkopf
AAPG Special Volumes
... of the work team. For example, a basin modeler working in isolation may need to resolve issues related to seismic interpretation or velocity functions...
2012
Abstract: Adaptive f-xy Hankel Matrix Rank Reduction Filter to Attenuate Coherent Noise; #90174 (2014)
Nirupama (Pam) Nagarajappa
Search and Discovery.com
... of offsets which renders the signal underneath un-useable. In addition, the noise can be aliased and have variable properties in terms of velocity, strength...
2014
Abstract: Resolution and Location Uncertainties in Surface Microseismic Monitoring; #90174 (2014)
Michael Thornton
Search and Discovery.com
... imaging with only compressional waves, significantly reducing the sensitivity to velocity model assumptions. While the surface arrays offer several...
2014
Experimental Study of a Coupled River and River-plume System: Backwater Controls on Source-to-sink Sediment 75 Transfer; #50712 (2012)
Phairot Chatanantavet and Michael Lamb
Search and Discovery.com
..., Spatial and temporal trends for water-flow velocity and bed-material sediment transport in the lower Mississippi River: GSA Bulletin, v. 124/3-4, p...
2012
2. Channel Morphology
Andrew D. Miall
AAPG Special Volumes
...), sediment load (amount and grain size), width, depth, velocity, slope, bed roughness and bank vegetation density (Leopold and Wolman, 1957; Schumm...
1981
Modeling Floodplain Deposits; #50628 (2012)
Irina Overeem, James Syvitski, and Albert Kettner
Search and Discovery.com
... as in the lateral direction into the floodplain depends on the local stream velocity, and on grain-dependent settling rates. Lateral depositional patterns...
2012