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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

TAU Migration and Velocity Analysis

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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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

Seismic Attributes Analyses In Pre-Production Geothermal Reservoir Simulation

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