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The AAPG/Datapages Combined Publications Database
Showing 29,356 Results. Searched 195,364 documents.
AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction
David W. Bell
AAPG Special Volumes
... to infer pressure anomalies. Knowing the influence of overpressure on average velocity aids in picking and quality control of stacking velocities...
2001
Migration Velocity Analysis by Migration of Velocity Spectra
Craig J. Beasley, Rolf Klotz
Southeast Asia Petroleum Exploration Society (SEAPEX)
... for detailed analysis of large 3-D surveys. An approach used routinely to improve estimation of migration velocity is to minimize the influence of dip...
1992
Velocity Logging and Its Geological and Geophysical Applications
H. R. Breck, S. W. Schoellhorn, R. B. Baum
AAPG Bulletin
...------------------------------ formation exerts great influence on the apparent velocity through the formation. Velocity logs showing geologic correlations...
1957
Abstract: Seismic Expression of Normal Faults and Associated Structures
Martha O. Withjack
Houston Geological Society Bulletin
...-reflection profiles show that each of these structural variables, as well as rock velocity, influence the seismic expression of rift-related structures...
1986
Mainstream Mantle Convection: A Geologic Analysis of Plate Motion
T. H. Nelson , P. G. Temple
AAPG Bulletin
... migrate in the direction of mainstream flow. However, as the symmetry of the cell pair has not been altered by the influence of the mainstream, spreading...
1972
The effect of morphology on postmortem transportation of bivalves and its taphonomic implications
Devapriya Chattopadhyay, Ashish Rathie, Anirban Das
PALAIOS
... demonstrated the influence of surface roughness on the entrainment velocity of bivalve shells. Dey (2003) also found variation in hydrodynamic...
2013
Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia
Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith
AAPG Bulletin
... processes controlling porosity loss (and hence sonic velocity increase), then sediment age would be expected to have an influence. Cementation...
2002
A New Approach to Time Depth Conversion and Depth Error Estimation for 2D Interpretation Using Seismic Velocities
Rosidah Hardiani, Sanisah Soed, Lothar Schulte
Indonesian Petroleum Association
... the velocities along the 2D lines and consequently the velocity interpolation has no influence on the depth conversion. Figure 4 - Difference between...
2013
Abstract: Comprehensive Technology for Complex Targets Research with Electromagnetic, Gravity, Magnetic and Seismic Data and its Applications; #90319 (2018)
Zhi Zhao, Dechun Li, Zhao Li
Search and Discovery.com
... on the pre-stacking depth migration of seismic data, greatly limiting the influence from the high velocity layers and decreasing the error...
2018
Transportation of Detritus by Moving Water: Part 1. Transportation
Filip Hjulstrom
AAPG Special Volumes
...., Irrigation Pocket Book. London, 1928. 6. BUCKLEY, A. B., "The Influence of Silt on the Velocity of Water Flowing in Open Channels," Min. of Proc. Inst...
1939
ABSTRACT: Discussion for Some Problems of Multiple Disciplines Research on Narrow & Thin Sand Oil Reservoir, by Fang, Baocai; #90026 (2004)
Search and Discovery.com
2004
Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China
Gang Yu, Yusheng Zhang, Ximing Wang, Xing Liang, Uwe Strecker, Maggie Smith
Unconventional Resources Technology Conference (URTEC)
... moveout analysis for each sector and used in elliptical velocity inversion to determine degree and direction of anisotropy. A simultaneous inversion...
2016
Quantification of pore structure and its effect on sonic velocity and permeability in carbonates
Ralf J. Weger, Gregor P. Eberli, Gregor T. Baechle, Jose L. Massaferro, Yue-Feng Sun
AAPG Bulletin
... that is needed to quantitatively evaluate the influence of pore geometry on acoustic velocity and other petrophysical properties.The here-described...
2009
In Situ Stress Prediction Using Differential Strain Analysis and Ultrasonic Shear-Wave Splitting
B. Widarsono, J. R. Marsden, M. S. King
Indonesian Petroleum Association
... not, in these cases, strongly influence on the velocity anisotropy for the horizontal direction, and hence do not confuse the subsequent interpretation of USWS...
1996
Seismic Shear Waves for Discriminating Lithology from Saturation Changes
T. L. Dobecki
Houston Geological Society Bulletin
... in an unconfined aquifer is an ideal and simple task for standard seismic refraction surveying. Typically, the compressional wave velocity variation is less than...
1989
The Effects of Sediment Concentration and Tube-Diameter on Particle Settling Velocity Measured Beyond Stokes' Range: Experiment and Theory
C. J. Lovell , C. W. Rose
Journal of Sedimentary Research (SEPM)
... in velocity that occur at higher Rn because particles exhibit a sphere of influence proportional to 1/Rn and theory derived for Rn < 0.1 predicts this sphere...
1991
Abstract: Ultrasonic P and S – Wave Velocity Anisotropy Measurements of Barnett Shale, by Nikolay I. Dyaur, Victor Pena, Mike Ammerman, and Evgeni Chesnokov; #90065 (2007)
Search and Discovery.com
2007
Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China; #41829 (2016)
Gang Yu, Yusheng Zhang, Uwe Strecker, Maggie Smith
Search and Discovery.com
...). Wide azimuth 3D seismic data is divided into azimuthal sectors and independent velocity analyses run on each. An ellipse is fitted to the sector...
2016
Stress Directions in Cretaceous Frontier Formation, Green River Basin, Wyoming
S. E. Laubach, S. J. Clift, R. E. Hill, J. Fix
Wyoming Geological Association
... is parallel to microfracture strike. Velocity analyses were carried out by TerraTek (Hyman and others, 1991). The direction of fastest acoustic travel...
1992
Inferring Maximum Geostrophic Current Velocities in the Norwegian-Greenland Sea from Settling-Velocity Measurements of Sediment Surface Samples: Methods, Application, and Results
Klaus H. Michels
Journal of Sedimentary Research (SEPM)
... Characterisation, Nurnberg, reprint of presentation, 45 p. COREY, A.T., 1949, Influence of shape on the fall velocity of sand grains [unpublished...
2000
Sonic Velocity in Carbonates„A Combined Product of Depositional Lithology and Diagenetic Alterations
Flavio S. Anselmetti, Gregor P. Eberli
Special Publications of SEPM
... analyses takes account of this ray porosity The cutoffs of the In addition to the velocity determinations several other analy ses were Dry bulk...
2001
ABSTRACT: How Do Fractures, Stress, and Rock Fabric Influence Velocity of the Marcellus Shale?, by Perry, Andrew; Wilkins, Scott; #90142 (2012)
Search and Discovery.com
2012
Impact of Velocity Field on AVA Analysis; #42363 (2019)
Ritesh Kumar Sharma, Satinder Chopra
Search and Discovery.com
...Impact of Velocity Field on AVA Analysis; #42363 (2019) Ritesh Kumar Sharma, Satinder Chopra GC Impact of Velocity Field on AVA Analysis* Ritesh...
2019
Rapid Method of Mechanical Analysis of Sands
K. O. Emery
Journal of Sedimentary Research (SEPM)
... velocity equal to that of quartz grains of much larger diameter. B. Histograms comparing sieve and tube analyses of a sand which contains a high...
1938
The Geophysical Aspects of Abnormal Fluid Pressures
Edward B. Reynolds, John E. May, Alf Klaveness
Houston Geological Society
... of reflection geometry for a velocity analysis. 34 Figure 1c. Examples of velocity analyses from two offshore Louisiana areas. 35 Figure 2. Effect...
1971