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The AAPG/Datapages Combined Publications Database

Showing 27,473 Results. Searched 190,755 documents.

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Large-Scale Pore Pressure Prediction After Pre-Stack Depth Migration in the Caspian Sea (Geophysics Paper 24)

Norbert van de Coevering, Hazim Hameed Al-Dabagh, Liau Min Hoe, Tony Jolly

Geological Society of Malaysia (GSM)

... are made in shales and measurements are in sands). Subsequently, various effective stress–velocity relationships predict pore pressure, which...


Fluid Flow

Gerard Middleton, John B. Southard

Special Publications of SEPM

... the speed of movement of the fluid is important, because this governs both fluid inertia and rates of A good variable of this kind is the mean velocity...


Abstract: The Role of Microbial Activity on Petrophysical Properties; #90153 (2012)

Gregor P. Eberli, Klaas Verwer, Giovanna Della Porta, Ralf J. Weger

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... deposits. As a result, microbialites are petrophysically characterized by high porosity and high velocity, although the pore types in microbialites...


Representation of Bed Configurations in Depth-Velocity-Size Diagrams

John B. Southard

Journal of Sedimentary Research (SEPM)

... variable. The sections in Figures 2 and 3 show that neither case is true of the depth-velocity-size diagrams. Figures 2A, 2B, and 2C show similar...


Abstract: A Southern North Sea Multi-Survey preSDM using Hybrid Gridded Tomography; #90211 (2015)

Ian Jones, Emma Evans, Darren Judd, Alan Campbell, and Steve Elam

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... used for North Sea type environments, where sedimentary interfaces delimit changes in the velocity field and the geology ‘lends itself’ to a layer-based...


Inferring Stratigraphy from Seismic Data

R. E. Sheriff

AAPG Bulletin

... and attitude of reflecting interfaces has been supplemented in recent years by measurements of velocity and amplitude for stratigraphic and lithologic...


Devonian Lithology Identification Utilizing Porosity Logs

G. F. Chambliss

Four Corners Geological Society

... in different manners. The Sonic log, for any given porosity, would indicate a higher formation velocity in limestone that it would in sandstone...


Characterization of a Sediment Core from Potential Gas-hydrate-bearing Reservoirs in the Sagavanirktok, Prince Creek, and Schrader Bluff Formations of Alaska's North Slope: Part 5Acoustic Velocity Core Studies

R. F. Sigal, C. Rai, C. Sondergeld, B. Spears, W. J. Ebanks Jr., W. D. Zogg, N. Emery, G. McCardle, R. Schweizer, W. G. McLeod, J. Van Eerde

AAPG Special Volumes

...% ice. The percentage of quartz is 60.4% minus the percentage of clay.Figure 8 shows the velocity bounds for a quartz-ice system for a variable...


Seismic Imaging through Outcropping Carbonates: An Example from the Canadian Rocky Mountains, , #41533 (2015).

Yong Hua, Don C. Lawton

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... inversion based upon the inverted GLI model was executed to obtain a detailed near-surface velocity model for the longwavelength statics calculation...


Flow velocity model for a coastal estuarine sandbar using multivariate regression

Edlic Sathiamurthy, Nurul Syamimi Pauzi

Geological Society of Malaysia (GSM)

...Flow velocity model for a coastal estuarine sandbar using multivariate regression Edlic Sathiamurthy, Nurul Syamimi Pauzi Bulletin of the Geological...


Behavior of Fluids

Gerard Middleton, John B. Southard

Special Publications of SEPM

...; for a sphere settling under its own weight, it's more natural to think of FD as an independent 6 1-7 variable and settling velocity as the dependent...


All that wobbles isnt necessarily azimuthal anisotropy

Helen Debenham, Jennifer Badry, Mohamed Megebry

Petroleum Exploration Society of Australia (PESA)

... of the acquired data during the PreSDM velocity model building, it was possible to correct for most of the variation simply with a laterally variable...


Incorporation of Geology, Wells, Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables True Earth ModelŽ, #40862 (2012)

Huyen Bui, Peck Hwa David Ng, Jenny Zhou, Chih-Wen Kue, Martiris Smith

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... to incorporate geology, well, and rock physics in anisotropy estimation for seismic depth imaging. As we all know, that the seismic velocity is an important...


Experimental Evaluation of a Generalized Suspended-Sediment Transport Theory

Guy Gelfenbaum, J. Dungan Smith

CSPG Special Publications

... produced by the following have recently been added to existing theories: multicomponent settling velocity distributions; suspendedsediment caused...


Evaluation of possible gas microseepage mechanisms

Alton Brown

AAPG Bulletin

... it cannot account for observed microseepage. In contrast, continuous gas-phase flow through frac tures can equal or exceed reported microseepage velocity...


Abstracts: An Investigation of Systematic Location Errors of Microseismic Events; #90173 (2015)

Martin E. Nicola, Bernd Milkereit, and Emmanuel Bongajum

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... since the velocity model is highly variable. Figure 7 below displays the location error as estimated by the “method of circles” diagram. The true...


RhoVe Method Empirical Pore Pressure Transform, #42301 (2018).

M. Czerniak,

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.... DOI:10.1306/42301Czerniak2018 1 GCS Solutions, Inc., The Woodlands, TX, United States ([email protected]) Abstract The rhob-velocity...


Kinematics of Sand Avalanches Using Particle-Image Velocimetry

Michael Tischer , Marcus I. Bursik , E. Bruce Pitman

Journal of Sedimentary Research (SEPM)

..., returning the slope angle of the granular material to its former value. The inclined plane was illuminated by a variable-speed strobelight. The 2-D velocity...


Geological Factors Influencing Porosity Estimates From Velocity Logs

Roberto Sarmiento

AAPG Bulletin

...Geological Factors Influencing Porosity Estimates From Velocity Logs Roberto Sarmiento 1961 633 644 45 5. (May) The close relation between acoustic...


Turbulence Modulation in Clay-Rich Sediment-Laden Flows and Some Implications for Sediment Deposition

Jaco H. Baas, James L. Best

Journal of Sedimentary Research (SEPM)

... in a distinct change in velocity and turbulence structure in flows transitional between Newtonian and non-Newtonian behavior. Such transitional flows develop...


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