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The AAPG/Datapages Combined Publications Database

Showing 28,873 Results. Searched 196,956 documents.

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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

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