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The AAPG/Datapages Combined Publications Database

Showing 1,098 Results. Searched 200,693 documents.

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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

... plot and therefore improve the resolution of velocity analysis over conventional common midpoint gathers. Introduction Migration is one of the most...

2014

Interpretation of first-arrival times of borehole acoustic measurements acquired in high-angle wells using 3D eikonal numerical simulations

Feiyue Xia, Carlos Torres-Verdín

International Meeting for Applied Geoscience and Energy (IMAGE)

... and that the wave traveltime is only affected by velocity variations on the traveling path (Červený, 2001). Wang et al. (2017) applies a simplified raytracing...

2024

Anisotropic elastic full-waveform inversion for crosswell seismic data for Wyoming CarbonSAFE project

Olga Podgornova, Shujaat Ali, Ting Lei, Peng Li, Matthew Johnson, Lu Lee, Zunsheng Jiao, J. Fred McLaughlin, Erik Borchardt, Lin Liang, Pierre Bettinelli, Joel Le Calvez

International Meeting for Applied Geoscience and Energy (IMAGE)

... for the horizontal shear velocity from the crossline component and vertical shear velocity from the inline component. In some depth intervals, sonic gamma...

2023

GPR surveys reveal the subsurface geology of major sea turtle nesting islands in the Saudi waters of the Arabian Gulf

Sherif Hanafy, Korhan Ayranci, Rommel H. Maneja, Ace Vincent B. Flandez, Jinoy Gopalan, Diego F. Lozano Cortes

International Meeting for Applied Geoscience and Energy (IMAGE)

... time scale to the required depth scale, we need to know the GPRwave propagation velocity value. Here, we buried a small metallic body at a known depth...

2023

Use of the Regulated Directional Reception Method in Exploration for Reefs in Bashkiria

Yu. N. Voskresenskiy, Ya. I. Shul’ts

Petroleum Geology: A Digest of Russian Literature

... are drilled below the low velocity zone (average depth of 50 m); this prevents generation of surface waves which have an effect on the summation...

1961

Elastic full-waveform inversion using random space shift

Yuhui Yao, Jizhong Yang, Yuzhu Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... than AFWI due to the slow S-wave velocity which requires a more accurate initial model than Pwave velocity, together with the existence of tradeoff...

2022

The Fabric, or Internal Structure, of Rocks … The Patterns of Anisotropy; #42188 (2018)

Heloise B. Lynn

Search and Discovery.com

..., but has left in the azimuthal traveltime wobble (see red arrow). (b) Initial ORT common image gather. The ORT velocity field has specified the VTI and HTI...

2018

Insights on time-lapse changes from 4D joint full-waveform inversion in Mississippi Canyon, Gulf of Mexico

Markus Albertz, Vincent Durussel, Tianjiang Li, Gaurav Dutta, Xin Cheng, Oscar Perez, Markos Sourial, Aurora Rodriguez Castelan

International Meeting for Applied Geoscience and Energy (IMAGE)

...) - (c) Figure 2: (a), (b) The inverted 4D velocity changes at different areas of interest, and (c) a corresponding depth slice. + - + (a) - + (b...

2024

Salt tectonics in the western Gulf of Cadiz, southwest Iberia

Hugo Matias, Pedro Kress, Pedro Terrinha, Webster Mohriak, Paulo T. L. Menezes, Luis Matias, Fernando Santos, Frode Sandnes

AAPG Bulletin

... isopach map of unit 1 was depth converted using a constant velocity of 4500 m/s, as shown in panels A and C of Figure 8. The synoptic map in Figure 8C...

2011

Origins of overpressure in the central Xihu depression of the East China Sea shelf basin

Jun Li, Jingzhou Zhao, Zhiqiang Hou, Shuping Zhang, and Mengna Chen

AAPG Bulletin

... with the normal compaction trend or conforms to a higher level of normal compaction as the depth increases. In the sonic velocity–effective stress diagram...

2021

Monitoring Sea-floor Instability Caused by the Presence of Gas Hydrate Using Ocean Acoustical and Geophysical Techniques in the Northern Gulf of Mexico

Erika Geresi, Ross Chapman, Tom McGee, Bob Woolsey

AAPG Special Volumes

.... The compressional (P)-wave velocity is expected to increase with depth to the estimated base of the gas-hydrate stability zone (BGHS) (approximately...

2009

1.5 Crustal Sections: A Wide Angle Seismic Profile

V. J. Hughes, R. S. White, E. J. W. Jones, D. H. Matthews, J. A. Brewer, and D. K. Smythe

AAPG Special Volumes

... seismic velocity versus depth profile can be determined beneath the fixed midpoint. The high density of receivers compared to conventional refraction...

1983

Mechanics of low-relief detachment folding in the Bajiaochang field, Sichuan Basin, China

Andreas Plesch, John H. Shaw, David Kronman

AAPG Bulletin

... of approximately 300 km2 (115 mi2). Data were acquired down to 5 s two-way traveltime (TWT), corresponding to approximately 10 km (6 mi) depth...

2007

Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming

Henry P. Heasler , Natalya A. Kharitonova

AAPG Bulletin

... by other workers (Rubey and Hubbert, 1959; Magara, 1976a; Sclater and Christie, 1980; Korvin, 1984). Linear porosity-depth relationships have been...

1996

Use of Seismic Surveying for Exploration of Oil and Gas Fields in the Fergana Valley

B. S. Vol’vovskiy, I. S. Vol’vovsky, B. B. Tal’-Virskiy

Petroleum Geology: A Digest of Russian Literature

... greatly depending on their velocity, degree of attenuation, and depth of occurrence of the corresponding refracting horizons. In the Pri-Adyr and Adyr...

1960

Brine volume and salt dissolution rates in Orca Basin, northeast Gulf of Mexico

Robin S. Pilcher, Raleigh D. Blumstein

AAPG Bulletin

... and 4.3 mi) (Figure 2). The midwater seismic reflector occurs at a TWT of 3005 ms, equating to a depth of 2251 m (7385 ft) if an average seawater velocity...

2007

Hydraulic Stimulation in a Tight Gas Reservoir: Insights from Microseismic and Geomechanical Modeling and Interpretation

Claudio Rabe, Pierre-Francois Roux, Luisely Linares, Maximiliano Garcia Torrejon, Luis Alberto Vernengo, Diego R. Lachter

Unconventional Resources Technology Conference (URTEC)

... optimization in the deep tight gas well targeting Lajas Formation at 4300m depth, in Neuquén basin, onshore Argentina. The objectives of this work were (1...

2024

A Method for Lithogenetic Subdivision of Pannonian (s. l.) Sedimentary Rocks: Chapter 8

A. Szalay, K. Szentgyorgyi

AAPG Special Volumes

... drawing (c) (opposite, bottom) shows an interpretation of parts A and B. Depth was converted to two-way traveltime using the velocity-depth functions...

1988

Pushing the boundary of WAZ streamer data for subsalt imaging: A case study in deepwater Mexico Campeche

Yi Chen, Kendra Pyke, Juan Wang, Jasmeen Moubarak, Earl Manning, Jessica Kopp, Rongzhang Chen, Chang Chen, Ravi Kumar, Minshen Wang, Sabaresan Mothi

International Meeting for Applied Geoscience and Energy (IMAGE)

... is at the confluence of multiple structural domains, including a complex and extensive salt canopy, creating significant challenges for velocity model building...

2022

Porosity prediction from seismic attributes of the Ordovician Trenton-Black River groups, Rochester field, southern Ontario

O. C. Ogiesoba

AAPG Bulletin

... in the Rochester field are due to the combined effects of low-velocity pushdown and faulting. Methods and results presented in this study can be used...

2010

Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)

Sunjay Sunjay,

Search and Discovery.com

... constitutes a key first step that facilitates the estimation of a velocity model for depth imaging. For these reasons, improving the quality of time...

2011

Divergent Wrench Faulting in the Belize Southern Lagoon: Implications for Tertiary Caribbean Plate Movements and Quaternary Reef Distribution

Maria Ester Lara

AAPG Bulletin

... on the synthetic seismograms. From left to right, columns show depth in well Palmetto Cay 1 (in feet), two-way traveltime in seismic section (in milliseconds), sonic...

1993

An approach to reduce exploration risk using spectral decomposition, prestack inversion, and seismic facies classification

Carlos Jesus, Wagner Moreira Lupinacci, Patricia Takayama, Joana Almeida, and Danilo Jotta Ariza Ferreira

AAPG Bulletin

.... Zdraveva, 2010, Building tilted transversely isotropic depth models using localized anisotropic tomography with well information: Geophysics, v. 75...

2020

Use of Seismic Surveying with the Method of Regulated Directional Reception in Exploration for Reefs in the Southern Cis-Urals

F. I. Khat’yanov, Ya. I. Shul’ts, V. V. Kuryayeva

Petroleum Geology: A Digest of Russian Literature

..., exploration of the reef masses which occur at great depth (1500-2500 m) is difficult and expensive. Such exploration is carried out by combined geophysical...

1963

New tools for seismic stratigraphic interpretation: Stratal convergence and instantaneous isochron attribute cubes derived from volumetric flattening of experimental strata

Jesse Lomask, Jason M. Francis, James Rickett, Marc L. Buursink, Thomas P. Gerber, Martin Perlmutter, Chris Paola

AAPG Bulletin

... was created from a series of closely spaced images. Depth was converted to traveltime using a constant velocity, and gray-scale intensities (because...

2009

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