Land FWI in the Sultanate of Oman: Challenges and advances on the road to high-resolution velocity

Mohammad Sheryar Farooqui, Yonghe Guo, Azza Al Hasni

International Meeting for Applied Geoscience and Energy (IMAGE)

... roll and shear waves. These are expected to be more robust to initial velocity error and give more accurate near-surface and deep velocities...

A Theory for the Formation of Limestone Cap Rock of Salt Domes

Richard R. McLeod

GCAGS Transactions

... the mother salt layer to its present position near the surface. Of the theories in category (2), it is generally recognized that the anhydrite layer...

Evaluating Seals for Hydrocarbon Accumulations

Marlan W. Downey

AAPG Bulletin

...------------------------------ of those special conditions is the circumstance of shallow, near-surface faulting in an overall tensional regional stress field...

Paleotectonic Restoration and Simulation Modeling Applicable to the Louisiana Offshore

Greg Whittle , Christopher G. St. C. Kendall , Michael A. Fogerty , Allen Lowrie

GCAGS Transactions

..., although the latter is more probable (Lowrie, Hoffman, and Sullivan, 1989). The salt domes reach near the surface along the slope and actually form...

Shallow High-Resolution Seismic Reflection to Delineate Upper 400 m around a Collapse Feature in Central Kansas

Richard D. Miller, Ana Villella, Jianghai Xia

Environmental Geosciences (DEG)

... assumptions appropriate for deeper petroleum problems are not realistic or feasible for near surface applications. This data set demonstrates...

Sediments of the Eastern Mississippi Delta

P. C. Scruton

Special Publications of SEPM

... near shore through olive gray to light olive gray below the surface zone also appear to vary systematically from brownish gray near shore through...

Stratigraphy and Structure of Northeast Providence Channel, Bahamas

Henry T. Mullins , George W. Lynts

AAPG Bulletin

... (to the northeast) revealing the presence of Layer III very near the surface along the axis of the channel. This would appear to be the result of the complete...

A Review of Slipface Processes and Structures in Terrestrial Eolian Dunes, and a Comparison with Dunes on Mars; #51690 (2021)

Steven G. Fryberger, Andrew Valdez, Nick Jones

Search and Discovery.com

..., depends upon the thickness of any cohesive layer near the surface of the dune. In places where there has been heavy rainfall, this layer...

Abstract: Optimum Aperture Length for Improving Dispersion Curve Analysis in CMP Cross-Correlation of Surface Waves; #90187 (2014)

Roohollah Askari, Robert J. Ferguson, and Helen Isaac

Search and Discovery.com

..., Department of Geoscience, University of Calgary Summary One of the challenges of converted wave processing is to estimate a good near surface shear wave...

Deformation of Earth's Lithosphere with Reference to Tidal Couples

R. C. Bostrom, M. A. Sherif, R. H. Stockman

AAPG Special Volumes

... of geological strata show that the matter constituting the earth is somewhat plastic, at least near the surface." Darwin modified Kelvin's...

Seismograph Interpretation as Related to Changes in Sedimentary Section in West Texas and New Mexico

John Daly , C. N. Page

AAPG Bulletin

... As pointed out previously, the two-way travel time from a near surface shot to a reflector and back again is a function not only of the structural...

Abstract: Near-Surface Characterization for Seismic Exploration Based on Gravity and Resistivity Data; #90254 (2016)

Jan Mrlina

Search and Discovery.com

...Abstract: Near-Surface Characterization for Seismic Exploration Based on Gravity and Resistivity Data; #90254 (2016) Jan Mrlina AAPG Datapages/Search...

Abstract: Processing and Imaging of Seismic Data Acquired with Buried Vertical DAS Arrays; #90319 (2018)

Andrey Bakulin, Ilya Silvestrov, Kevin E. Erickson, Pavel Golikov, Robert Smith, Mustafa Al-Ali

Search and Discovery.com

... and imaging results of the buried vertical DAS arrays. Vertical travel-times along the wells are used to estimate near-surface velocities and static...

SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Summary and Conclusions

Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver

AAPG Special Volumes

.... On this record a low velocity (about 2.0 km/sec) near-surface layer (the Coastal Plain sediments) overlies higher velocity (6.2-6.4 km/sec) crystalline rocks...

Research and application of shallow surface wave prediction attenuation in dual complex mountainous exploration areas

Xinyue Song, Zaijin Zhang, Yi Bao, Cheng Wang, Zhonghua Zhao, Yangyang Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... for subsequent velocity modeling and target layer imaging. Suppressing shallow surface wave is an important means to improve the shallow signal-to-noise...

Electric and Electromagnetic Prospecting for Oil

W. P. Jenny

AAPG Bulletin

... to varying resistivities of a layer at a certain depth, may reasonably be assumed to be stronger near the surface than deeper, a schematic diagram (Fig...

Offshore Tidal and Non-Tidal Sand Ridges and Sheets: Differences in Morphology and Hydrodynamic Setting

R. H. Belderson

CSPG Special Publications

... and sand sheet facies have distinct hydrodynamic settings. The former is associated with mean spring near-surface peak tidal currents of 90 cm...

Properties of Turbidity Currents of High Density

Ph. H. Kuenen

Special Publications of SEPM

... Distance from origin cm from bottom 12.5 10.01.10 1.10 7.5 5.0 2.5 back. The velocity of the flow is also greater at lower levels than near the surface...

Chapter 8: Impact of Depositional and Diagenetic Heterogeneity on Multiscale Mechanical Behavior of Mancos Shale, New Mexico and Utah, USA

Hongkyu Yoon, Mathew D. Ingraham, Joseph Grigg, Benjamin Rosandick, Peter Mozley, Alex Rinehart, William M. Mook, Thomas Dewers

AAPG Special Volumes

... that these are natural fractures produced either at depth or associated with weathering processes in the near-surface, and not associated with the quarry block...

Characterizing the Near Surface with VSP and Well Logs

Search and Discovery.com

...Characterizing the Near Surface with VSP and Well Logs Characterizing the Near Surface with VSP and Well Logs Soo-Kyung Miong* University of Calgary...

Rhythmic Topography in a Mesotidal, Low-Wave-Energy Environment

P. B. Hale , S. B. McCann

Journal of Sedimentary Research (SEPM)

..., are shown in Figure 11. They contain waveformed ripple cross-stratification of varying asymmetry and orientation near the surface which becomes less...

Chapter 8: Petrophysical Characteristics of the Ivie Creek Case-Study Area - Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir (MP-02-6)

R.D. Jarrard, M.A. Chan, C.B. Forster, S.H. Snelgrove

Utah Geological Survey

... that is approximately logarithmic (Figure 8-12C). By the time the Ferron has reached near-surface depths (70 to 460 feet [20-140 m]), average porosity has...

Abstract: Anisotropic Depth Imaging and Interpretation in Thrust-Belt Exploration, by Don Lawton; #90073 (2007)

Search and Discovery.com

Kinematics of Sand Avalanches Using Particle-Image Velocimetry

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

Journal of Sedimentary Research (SEPM)

... for different surface properties. Our results suggest that the presence of a deformable bed (layer of loose or erodible particles) on the surface...

Silcretes and Associated Silica Diagenesis in Southern Africa and Australia

David Smale

Journal of Sedimentary Research (SEPM)

... on or near the surface and qualify for the name of silcrete are distinct from the more abundant terrazzo types. Such rocks are layers of common (or other...