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The AAPG/Datapages Combined Publications Database

Showing 3,212 Results. Searched 200,357 documents.

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Defining a Steeply-Dipping Salt Flank in Mississippi with a New High-Certainty 3D Method

Nicholas Brooks, Pat Donais, Werner Heigl, Jakob Haldorsen, Fred Li

GCAGS Transactions

... of the shear wave is perpendicular to this ray. An impulsive source in a homogenous, isotropic medium generates a uniformly expanding spherical wave front...

2015

Depth of Disturbance of Sand on Sea Beaches by Waves

C. A. M. King

Journal of Sedimentary Research (SEPM)

... correlation was found between the depth of disturbance of the sand and the wave height, and the results have been analyzed statistically. The depth...

1951

The Axial Ratio C/B as an Indicator of shape Selective Transportation

Luis A. Spalletti

Journal of Sedimentary Research (SEPM)

... significance of the axial ratio C/B and the geometricity ratio were analyzed. C/B is a parameter used by Zingg (1935) to differentiate spherical and rod clasts...

1976

Abstract: Microbialites in Zechstein Cycle 2 Carbonates (NE England and Poland): Types and Source Rock Perspectives; #90153 (2012)

Mirosław Słowakiewicz and Maurice E. Tucker

Search and Discovery.com

... that appear peaked or rounded in cross-section. They display the same relative orientation and are believed to have originated as wave-generated...

2012

Abstract: Shallow VSP Survey using a Small Vibrator Source; #90171 (2013)

Joe Wong, Soo K. Miong, Robert R. Stewart, Eric V. Gallant, and Kevin W. Hall

Search and Discovery.com

... component data were subjected to wavefield separation to remove down-going P-wave and S-wave events, as well as other up-going and down-going low-velocity...

2013

II. Information Content and Resolution Potential of Seismic Data.

Norman S. Neidell

AAPG Special Volumes

... motion within this region. Fig. Spherical wave motion encountering a flat reflector illustrating Fresnel zone region which is principally responsible...

1979

Petrophysical Relationship to Predict Synthetic Porosity Log; #41124 (2013)

Thariq Guntoro, Intan Putri, and Ayi Syaeful Bahri

Search and Discovery.com

... of hydrocarbon either gas or oil. By petrophysical relationship, the synthetic log can be estimated. Faust's equation was used to obtain P-wave velocity...

2013

Cross-Shore Distribution of Sediment Texture Under Breaking Waves Along Low-Wave-Energy Coasts

Ping Wang , Richard A. Davis, Jr. , Nicholas C. Kraus

Journal of Sedimentary Research (SEPM)

...Cross-Shore Distribution of Sediment Texture Under Breaking Waves Along Low-Wave-Energy Coasts Ping Wang , Richard A. Davis, Jr. , Nicholas C. Kraus...

1998

Pebbles from a Pothole: A Study in Shape and Roundness

Dorothy Carroll

Journal of Sedimentary Research (SEPM)

... on the scarcity of spherical pebbles in the natural material available to him. In order to obtain some information about the occurrence of pebbles in potholes...

1951

The Wedge Model Revisited; #41545 (2015)

Joanna K. Cooper, Don C. Lawton

Search and Discovery.com

... complications for migration. The study suggests that pure-mode and converted-wave multiples can be significant recorded events in the presence of high velocity...

2015

CRS-Stack and NIP-Wave Tomography Implemented to the SH-Wave Reflection Seismic Data for Shallow Hydrocarbon Prospecting (Paper P30)

M. R. Sule, A. A. Valencia, A. Hendriyana, U. Polom, C. M. Krawczyk

Geological Society of Malaysia (GSM)

..., such as low cut detected. The use of CRS-Stack and NIP-wave tomography filtering to reduce ground roll, spherical divergence correction, methods...

2012

Abstract: Regular Grids Travel Time Calculation … Fast Marching with an Adaptive Stencils Approach; #90187 (2014)

Zhengsheng Yao, Mike Galbraith, and Randy Kolesar

Search and Discovery.com

...daptive stencils’ result Conclusions During wave propagation, the wavefront is in general neither flat nor circular/spherical and therefore, there is no s...

2014

Abstract: Joint OBN and 3-D DAS-VSP Data Acquisition and Processing in East China Sea; #91204 (2023)

Gang Yu1, Haibo Liu, Zhonglin Cao, Junjian Li, Jianguo Li, Yuanzhong Chen, Guangming He, Junjun Wu, Ximing Wang

Search and Discovery.com

... quality. The 3-D DAS-VSP downgoing multiple reflection wave imaging shows significant imaging quality improvement in comparison with the vintage 3-D...

2023

Mudstone Geophysical Properties for Pressure Prediction

Dan Ebrom

GCAGS Transactions

... geophysical properties to start with are total porosity (or equivalently, density), P-wave velocity, and S-wave velocity. Earlier model...

2008

Technical Article: Finding Subtle Traps with Seismic: Interpretative Criteria Clarified

A. Easton Wren

Petroleum Exploration Society of Australia (PESA)

... for natural amplitude decay as a function of transmission, spherical divergence, and others also were introduced. Now waiting in the wings is the spectre...

1986

Utilization of Existing Wells in Seismograph Work

Burton McCollum , Wilton W. Larue

AAPG Bulletin

... is several miles away from the dome, experience has sh wn that under these conditions the wave front, instead of being spherical, becomes somewhat ellipsoidal...

1931

Abstracts: Determining Elastic Constants of an Orthorhombic Material by Physical Seismic Modeling; #90173 (2015)

Faranak Mahmoudian, Gary F. Margrave, P. F. Daley, and Joe Wong

Search and Discovery.com

... specific acquisition configurations. A simplified expression between the P-wave group velocity and elastic constants, has allowed for the estimation of off...

2015

Abstract: An Azimuthal-AVO-Compliant 3D Land Seismic Processing Flow; #90171 (2013)

David Gray, Darren Schmidt, Nirupama Nagarajappa, Charles Ursenbach, and Jon Downton

Search and Discovery.com

...., 2001). 2. Azimuthal spherical divergence correction (Xu and Tsvankin, 2006). 3. 5D interpolation (Trad et al., 2005). 4. Migration of Common Offset...

2013

A double double-porosity model for wave propagation in patchy-saturated tight sandstone with fabric heterogeneity

Jing Ba, Mengqiu Guo, Wenhao Xu, Fengyuan Sun, Lin Zhang, Wei Cheng

Petroleum Exploration Society of Australia (PESA)

...A double double-porosity model for wave propagation in patchy-saturated tight sandstone with fabric heterogeneity Jing Ba, Mengqiu Guo, Wenhao Xu...

2018

Application of Seismography to Geological Problems

Eugene McDermott

AAPG Bulletin

... accurately stated, the wave front is spherical. If the material is not homogeneous the path is curved, that is, the wave is gently refracted, and the wave...

1931

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 2: Modelling Results; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... and Robert R. Stewart University of Houston Summary The complete spherical wavefield emanating from a P-wave point source surrounded by a homogeneous isotropic...

2013

Cave Pearls and Pisoliths: A Sedimentological Comparison

Carol A. Hill

West Texas Geological Society

... Cave, Guadalupe Mountains, New Mexico (Nymeyer, 1938). Shape is typically spheroidal for both pisoliths and cave pearls, but can vary from spherical...

1992

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