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The AAPG/Datapages Combined Publications Database
Showing 29,660 Results. Searched 196,431 documents.
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
Sedimentologic and Physical Oceanographic Evidence of a Shelf Edge Counter Current Off Guinea Bissau, Guinea and Sierra Leone
David W. McGrail
Journal of Sedimentary Research (SEPM)
... to obtain a velocity profile. Coherence between the calculated flow pattern and distribution of sediment assumed to be under the influence of modern...
1977
Settling Velocities of Irregular Grains at Low Reynolds Numbers
Jumpei Baba, Paul D. Komar
Journal of Sedimentary Research (SEPM)
... such as oscillations but generally maintained their maximum projection areas oriented perpendicular to the fall direction. Analysis of the data...
1981
Combining Petrophysical Properties and Ultrasonic Velocity for Improved Prediction of Tight Carbonate Reservoir
Abdallah Abdelkarim, Osman Abdullatif
Unconventional Resources Technology Conference (URTEC)
... for porosity, permeability, and ultrasonic P-wave velocity to show the distribution of these properties. Further analyses were conducted on the samples...
2017
Crustal Structure and Evolution of an Explosive Silicic Volcanic System at Yellowstone National Park
Robert B. Smith, Lawrence W. Braile
Wyoming Geological Association
... structures (Schilly et al., 1982). Three-dimensional velocity distributions of the upper crust were determined from delay-time analyses (Lehman et al...
1982
The Influence of Flocculation on Cohesive Sediment Transport in a Microtidal Estuary
Morten Pejrup
CSPG Special Publications
... inlet to estuary head. D expresses the influence of the wind direction and ΔU2 expresses the influence of the excessive bottom shear stress on suspended...
1991
ABSTRACT: Understanding the Stress Dependence of Velocity in Unconsolidated Sands; #90061 (2006)
Michael T. Myers and Lori A. Hathon
Search and Discovery.com
..., weakening it and causing a large stress dependence in velocity. Authigenic clays precipitated in primary pores influence in-situ velocity but not its...
2006
Permeability Multiplier Prediction Utilizing Wide Azimuth 3D OBC Seismic Data; #41349 (2014)
T. Matarid
Search and Discovery.com
... to an ellipse to find out the fast and slow velocity direction and the difference between those velocities. The Interval Velocity is sensitive to Lithology...
2014
Particle Roundness and Surface Texture Effects on Fall Velocity: NOTES
Garnett P. Williams
Journal of Sedimentary Research (SEPM)
...., 1954, Influence of Shape on the Fall Velocity of Sedimentary Particles U. S. Army, Corps of Engineers, Missouri River Div., Sediment Series No. 5, Fort...
1966
Three-Dimensional Seismic-Reflection Techniques
Hermann Buchholtz
Circum Pacific Council Publications
... ellipse, probably due to the influence of overburden. Velocity analyses in 3-D work are normally conducted on a grid of about 500 x 500 m. In marine 3-D...
1989
Effects of Seagrass Beds on Tidal Flat Sedimentation, Corner Inlet, Southeast Australia
Wu-Yi Zhuang, John Chappell
CSPG Special Publications
... of this process have been carried out on tidal flats. Field monitoring of current velocity and suspended sediment concentrations (SSC) over the seagrass beds...
1991
Concepts of Fluid Mechanics Provided by Primary Sedimentary Structures
John E. Sanders
Journal of Sedimentary Research (SEPM)
... effects which are brought about by the distinctive paths followed by particles which move under the influence of each mechanism; 2) The effects of grain...
1963
The Isolation of Settling-Velocity Fractions of Sand-Size Material: New Possibilities for the Settling Tube Technique: RESEARCH METHOD PAPER
Reinhard Oehmig , Klaus H. Michels
Journal of Sedimentary Research (SEPM)
... of component or by the influence of currents. By separating the marked settling-velocity ranges, similarities and differences between the two distributions can...
1994
TAU Migration and Velocity Analysis
Search and Discovery.com
N/A
Reservoir Description by Interferometric Imaging of VSP Data in Transition Zones
Thomas Radford, Martin Karrenbach, Ferry Yustiana, Willi Brianno, Dhea Wachju
Indonesian Petroleum Association
... aspects, we focused on the value of information obtained by using advanced processing flows, such as a 3D depth-tied velocity model construction using...
2013
Deposition and Stratification of Oblique Dunes, South Padre Island, Texas: ABSTRACT
Stephen Paul Weiner
AAPG Bulletin
... the influence of prevailing onshore winds. High-velocity northerly winds associated with the passage of winter frontal systems (November through February...
1982
The Effects of Porestructure on Sonic Velocity in Carbonates: Examples from Gunung Rapat Limestone, Ipoh
Muhammad Hafiz Izuddin, Chow Weng Sum, Mohd Shafeea Leman, Khor Wei Chung
Geological Society of Malaysia (GSM)
...The Effects of Porestructure on Sonic Velocity in Carbonates: Examples from Gunung Rapat Limestone, Ipoh Muhammad Hafiz Izuddin, Chow Weng Sum, Mohd...
2016
Simple Models for the Stress-Dependence of Anisotropic Seismic Velocities in Fractured Rock; #120053 (2012)
Richard L. Gibson, Jr. and Kai Gao
Search and Discovery.com
.... Furthermore, the influence of these fractures will depend on changes in stress in the reservoir during fluid movement, and the magnitude of the seismic...
2012
Properties of Turbidity Currents of High Density
Ph. H. Kuenen
Special Publications of SEPM
... and the velocity of the flows was measured by stop watch. By varying the density, slope, volume, and viscosity, CURRENTS OF HIGH DENSITY the influence...
1951
Porosity Variation Detection using Seismic Velocity in Unconventional Shale Reservoirs: Antrim, Marcellus and Collingwood Shales, #90116 (2010)
Jerome B. Blaxton
Search and Discovery.com
.... The velocity anomalies are easily mapped using both 2D and 3D seismic data. Azimuthal anisotropy can influence results if fracture porosity is the dominate...
2010
Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf: Discussion
Peter Japsen
AAPG Bulletin
... that no general velocity-depth function can be used when performing more accurate analyses like depth conversion of seismic data, pore-pressure...
2006
Distinguishing Natural Reactivated Fractures from Hydraulic Induced Fractures using Microseismic Event Analysis, #41306 (2014)
Sherilyn Williams-Stroud, William Barker, Kevin Smith
Search and Discovery.com
... trends of microseismicity, the trends were not parallel to the regional maximum horizontal stress direction as indicated both by the source mechanisms...
2014
Transportation of Detritus by Moving Water
Filip Hjulstrom
Special Publications of SEPM
.... Such a study, however, is difficult because the rapid fluctuations in velocity and direction of flow must also be considered; the momentary extremes...
1955
An Analysis of Factors Controlling Deviations in Hydraulic Equivalence in Some Modern Sands
Richard Lowright, E. G. Williams, Frank Dachille
Journal of Sedimentary Research (SEPM)
... equilibrium; as grain size increases, the heavy: light settling velocity ratio decreases, a condition which can be predicted from pickup equations...
1972
Some Principles and Techniques Used in Reconstructing the Hydraulic Parameters of a Paleo-Flow Regime
Alan V. Jopling
Journal of Sedimentary Research (SEPM)
... are given in table 2, where D84, D50, D46 and the gradation coefficient r are based on sieve analyses and not on settling velocity analyses. The gradation...
1966