Seismic Foldout: FWI Imaging Under Complex Geological Anomalies

Adriana Citlali Ramirez, Simon Baldock, Stuart Fairhead, TGS

GEO ExPro Magazine

... Image sections, c) 15Hz DM FWI velocity model. structures are difficult to image traditionally due to seismic attenuation and complex overburden...

Deriving Subsurface Insight from Seismic

Gregory Partyka

Indonesian Petroleum Association

... of the noise attenuation. It is important to work with a stable source wavelet. If the source wavelet characteristics vary temporally and /or spatially...

Surface Gamma Ray Logs: A Correlation Tool for Frontier Areas: DISCUSSION

Duncan R. Cowan , Keith J. Myers

AAPG Bulletin

...) paper, "Surface Gamma-Ray Logs: A Correlation Tool for Frontier Areas," is a useful contribution to a rather neglected subject area, and the author...

Integrated Field Study of Heavy Oil Reservoirs using Integrated Geophysics, Geochemistry, and Numerical Modeling Techniques

Mathew Fay

Search and Discovery.com

... seismic amplitude anomalies and time shift anomalies which may be caused by wormholes and foamy oil. The results can be very useful and valuable...

Abstract: Prestack Rank-Reduction-Based Noise Suppression: Practise; #90171 (2013)

Lynn Burroughs and Stewart Trickett

Search and Discovery.com

... it are to: - Reveal signal in noisy areas. Improve AVO and azimuthal analysis. Improve multiple attenuation, velocity analysis, and statics correction...

Integrated Field Study of Heavy Oil Reservoirs using Integrated Geophysics, Geochemistry, and Numerical Modeling Techniques

Mathew Fay

Search and Discovery.com

... seismic amplitude anomalies and time shift anomalies which may be caused by wormholes and foamy oil. The results can be very useful and valuable...

Abstract: Prestack Rank-Reduction-Based Noise Suppression: Practise; #90171 (2013)

Lynn Burroughs and Stewart Trickett

Search and Discovery.com

... it are to: - Reveal signal in noisy areas. Improve AVO and azimuthal analysis. Improve multiple attenuation, velocity analysis, and statics correction...

Abstract: A Comparison of Standard Migration with EOM for Hussar Data; #90174 (2014)

Thais A. Guirigay, John C. Bancroft, and J. Helen Isaac

Search and Discovery.com

... processing: geometry, first breaks, statics, elevation statics, geometry spreading compensation, noise attenuation using Radial filter, Gabor deconvolution...

Current Production Logging

C. B. Davenport, R. S. Millhone

Indonesian Petroleum Association

... Injection Profiling Sonic logging techniques involve attenuation, reflection, refraction, and travel time concepts. All tools may suffer from multipath...

Adventures in groundwater monitoring: Why has it been so difficult to obtain groundwater data near shale gas wells?

Daniel J. Soeder

Environmental Geosciences (DEG)

...; Brantley et al., 2014), but such reports are not especially helpful for defining the mechanisms of release or the migration pathway of the contaminants...

Integration of Core Data with Well Logs for Geomechanical Property Determination and Monitoring in the Argentinean Vaca Muerta Shale Formation

Maxwell Willis, Azra N. Tutuncu

Unconventional Resources Technology Conference (URTEC)

... to in different parts of the basin as either the Sierras Blancas or Catriel) is a clastic reservoir deposited through eolian and lacustrine mechanisms (Vergani...

Linking sediment flux to river migration in arid landscapes through mass balance

Alessandro Ielpi, Mathieu G.A. Lapôtre

Journal of Sedimentary Research (SEPM)

... erodibility and bend geometry. Our model sheds new light on the driving mechanisms of channel mobility in dryland streams and may find application...

Model of Upper Cenozoic Geologic Evolution of the Louisiana Slope

Allen Lowrie

GCAGS Transactions

... on isostasy and lateral salt extrusion. Once these mechanisms are understood, then the actual situation of the Louisiana slope may be approached. In terms...

Dispersal of Fine Sediments from River to Shelf: Process and Product

Bentley, Samuel J., Sr.

GCAGS Transactions

... observations conducted during the past two decades have shown that shelf-sediment dispersal mechanisms, especially for fine sediment, are more complex...

Wavelet Processing

Lee Lu

Indonesian Petroleum Association

.... The homomorphic deconvolution method is useful if the amplitude specturm of the source wavelet is smooth with respect to that of the desired signal...

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

... dB is applied to the spectra in Figure 1; the relative amplitudes are retained. We note that attenuation increases with depth z and frequency ω...

Abstract: Statistical Biases in Microseismicity Parameters; #90187 (2014)

Melanie Grob and Mirko van der Baan

Search and Discovery.com

... of Alberta, Edmonton AB T6G 2E1, Canada Summary Microseismic event analysis has become a useful tool to monitor hydraulic fracturing experiments. The most...

Abstract: Neoichnologic Experiments with Modern Scarabaeid Beetle Larvae: Implications for Backfilled Trace Fossils in Permian Continent; #90063 (2007)

Search and Discovery.com

Abstract: Characteristics, distribution and morphogenesis of microbial carbonate systems in Shark Bay, Australia; #90153 (2012)

Ricardo J. Jahnert, Lindsay B. Collins

Search and Discovery.com

... fabrics, constructional mechanisms, microbial communities, growth rates and sediment associations in the intertidal and previously little researched...

Seismic Processing Applications on a Personal Computer

Geophysical Service (Malaysia) Sdn. Bhd.

Geological Society of Malaysia (GSM)

...). Such a display format is useful for analyzing loss of amplitude as a function of depth and frequency as an aid in developing a Q-model of attenuation...

Heavy Metal Sorption Capabilities of Some Soils from Active Landfill Sites in Selangor

Wan Zuhairi Wan Yaacob

Geological Society of Malaysia (GSM)

... conductivity and high attenuation property on pollutants. In this study, some soil samples have been collected from (or adjacent to) active landfill sites...

Multidomain simultaneous joint inversion for near-surface characterization A case study from onshore US

Nate Johnson, Ali Ahmed Hussein Mohamed, Zhanna Jackson, Seth Riseman, Kevin Douglas

International Meeting for Applied Geoscience and Energy (IMAGE)

... Refracted and surface (Rayleigh) waves contain complementary information useful for characterizing nearsurface geology. Refracted waves have relatively...

Characterization of Seismic Anomalies using Converted Waves: A Case History from East Natuna Basin

Lotfi Ben-Brahim, Ronan Petton, Michel Couderc, Agus Djamhoer

Indonesian Petroleum Association

... on the conventional data. It is interpreted as a gas migration front through an alternating series of sands and shales. Visualization tools are a useful...

Relative inversion for extended elastic impedances

Peter Harris, Kathryn Young

International Meeting for Applied Geoscience and Energy (IMAGE)

... and wavelet stretch from near to far angles due to NMO stretch or differential attenuation, both of which make the gradient even less stable. The extended...

Subsalt imaging using elastic FWI: A case study from Walker Ridge, Gulf of Mexico

Chirag Parekh, Andrew Stephenson, Juan Perdomo, Claudia Flores, Christopher McMorland, Matt Vander Griend, Austin Boles, Andrew Fuhrmann

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the industry, worldwide, to update velocity models despite its obvious limitations. This type of approximation is useful in media that possess a mild...