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The AAPG/Datapages Combined Publications Database

Showing 8,086 Results. Searched 200,357 documents.

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Enhancing Seismic Interpretation Using Crosswell Seismic: Case Study From Indonesia

Tri Handayani, Zeppy Irwanzah, M. Taslim, Sanjeev Dogra, Ajay Nalonnil, Bruce Marion, Pedro Carrillo Reyes

Indonesian Petroleum Association

... in the weathered layer and difficult surface access issues, the ability to use existing wellbores to conduct a crosswell seismic survey is a unique...

2011

Structure of Argentine Continental Margin

William J. Ludwig , John I. Ewing , Maurice Ewing

AAPG Bulletin

... and geologic ages are made from comparison of velocities and depths to layers in the shelf profiles with those in land profiles recorded near boreholes...

1968

Improved Structural Imaging of the Karama Seismic Survey Using Anisotropy Kirchhoff and Beam Depth Migration

Zbigniew Ostapiuk, Bee Jik Lim, Martin Bayly

Indonesian Petroleum Association

..., there is significant water velocity change with depth between warm less saline water near the surface and colder, denser water at depth. If a single...

2012

S-transform based processing of noisy surface wave record for recovering high-resolution spectrum

Sayan Mukherjee, Mrinal Bhaumik, Tarun Naskar

International Meeting for Applied Geoscience and Energy (IMAGE)

... analysis of the surface waves (MASW) method to accurately predict near-surface shear wave velocity profiles. In field acquisitions, a common problem...

2022

Abstract: Raypath-Consistent Shear Wave Statics; #90224 (2015)

Raul Cova, David Henley, and Kris Innanen

Search and Discovery.com

...-wave processing. The lack of a good correlation between P- and S-wave velocities in the near surface introduces a whole new problem to be solved. Due...

2015

Characterizing initial-state conductivity distribution at a CO2 injection site with airborne, surface, and borehole electromagnetic induction methods

Lucie Costard and Jeffrey G. Paine

Environmental Geosciences (DEG)

... laterally and vertically varying conductivity patterns that are being used to delineate near-surface lithology and potential soil and water salinity...

2015

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

... Directivity and Array Effects Receiver Arrays Near Surface Velocity Variations Geometrical Spreading Propagation Loss of High Frequencies (Earth...

1987

Amplitude Mapping of Reservoirs in North Africa

Search and Discovery.com

... areas of North Africa include a sweep with frequencies in excess of 70hz, but the near surface complexities usually limit the useable frequencies...

2013

Limitations of Reflection Seismograph

L. E. Nugent, Jr.

AAPG Bulletin

... of computational procedures. This is not a weathered zone in the geologic sense but rather a near-surface zone in which velocities are 1/5...

1953

Baffin Bay: Small Ocean Basin Formed by Sea-Floor Spreading

C. E. Keen , M. J. Keen , D. I. Ross , M. Lack

AAPG Bulletin

... of the bay near Davis Strait, all attempts to map this important layer have failed. Within the flat-lying sedimentary rocks there is no reflector which...

1974

Advanced Reprocessing and Imaging: Enhancing Legacy Surveys

Dominic Fell, Shane Westlake, Richard Patenall, Jennifer Badry

Petroleum Exploration Society of Australia (PESA)

... surface multiples. An initial pass of velocity analysis was performed after first applying temporary static corrections to compensate for the near surface...

2016

Abstract: Variable Depth Streamer Acquisition: Enhancing Interpretation with Broadband Marine Seismic; #90174 (2014)

R. Soubaras, R. Dowle, and R. Sablon

Search and Discovery.com

... GeoConvention 2012, (Vision) May 14-18, 2012, Calgary, AB, Canada Figure 3: Water bottom and near-surface sediments imaged using conventional streamer...

2014

Study on Characteristic Variability of Weak Signal in High Density Seismic Acquisition; #41351 (2014)

Wujin Chen and Anchu Wu

Search and Discovery.com

... The near surface velocity model and Q factor model were created with up-hole, LVL and logging data in LJ area; the target layer model was created...

2014

Land 3D Acquisition Techniques Related to S.E. Asian Situation

Walter Ritchie

Indonesian Petroleum Association

... of an applicable technique e.g. multiple problems must be addressed with high fold and wide offset range for attenuation by CDP stack process. Near surface...

1981

Marine Geophysical Study Northeast of Trinidad-Tobago

B. G. Bassinger , R. N. Harbison , L. Austin Weeks

AAPG Bulletin

... investigators. Some of the results have been presented by Schuchert (1935), Maxwell (1948), and Suter (1960). In the study area, near-surface, shallow-water...

1971

Experiments on Wedge-Shaped Deep Sea Sedimentary Deposits in Minibasins and/or on Channel Levees Emplaced by Turbidity Currents. Part I. Documentation of the Flow

Octavio E. Sequeiros, Benoit Spinewine, Marcelo H. Garcia, Rick T. Beaubouef, Tao Sun, Gary Parker

Journal of Sedimentary Research (SEPM)

..., S.A., 2005, Transient fan architecture and depositional controls from near-surface 3-D seismic data, Niger Delta continental slope: American...

2009

Crustal Structure and Seismotectonics of Northern Baja California: Chapter 15: Part III. Regional Geophysics and Geology

J. Frez, J. J. Gonzalez

AAPG Special Volumes

.../sec near the surface and middle-crustal velocities of about 6.5 km/sec at a depth of 15 km. These results are compatible with those obtained from...

1991

Limited ichnologic fidelity and temporal resolution in pelagic sediments: paleoenvironmental and paleoecologic implications

Charles E. Savrda

PALAIOS

... to burrow stratigraphy or substrate tiering. Marine hemipelagic–pelagic substrates can be divided into two main layers—the surface mixed layer...

2014

Full phase-velocity spectrum inversion of multimode Rayleigh waves

Yanlong Niu, Yunyue Elita Li, Siau Chen Chian

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The red star denotes the best-observed minimum objective function. Black dots represent previous samples. We observe that Layer 1 and Layer 3 velocities...

2022

UK Continental Shelf: Raising the Bar for Regional 3D Seismic in the Central North Sea

Gregor Duval, Steve Hollingworth, Luke Twigger, CGG

GEO ExPro Magazine

... The imaging challenges arise from several aspects of the CNS’s unique geology: relatively shallow waters (less than 100m), near-surface Pleistocene...

2015

Refraction tomography at the Nova Ni-Cu mine

Ian James, Graeme Hird, Andrew Fitzpatrick

Petroleum Exploration Society of Australia (PESA)

... are applied to account for the near-surface variations in refractor velocity and depth. This was performed using several methodologies, from layer-based...

2019

Hydrology of Meteoric Diagenesis: Effect of Pleistocene Stratigraphy on Freshwater Lenses of Big Pine Key, Florida

H. Leonard Vacher, Michael J. Wightman, Mark T. Stewart

Special Publications of SEPM

... permeable layer near the profoundly affects the distribution of groundwater flux Figure 8 shows streamlines in a circular island of radius I km for both one...

1992

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