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The AAPG/Datapages Combined Publications Database

Showing 3,423 Results. Searched 187,797 documents.

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

Raul Cova, David Henley, and Kris Innanen

Search and Discovery.com

...-vertical condition. An analytic expression for computing deviated travel times through the LVL in terms of its dip, thickness and velocity is proposed...

2015

Imaging Complex Structures in Colombia … Full Wave Equation Migration Approach

Hector A. Alfonso, Luis E. Rojas, Weizhong Wang, Jie Zhang, Oz Yilmaz

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... that includes t-squared scaling, predictive deconvolution, time-variant spectral whitening, near-surface corrections and f-x dip filtering. distance along...

2008

Abstract: Azimuthal Anisotropy as a Potential Fracture Diagnostic from 3D Surface Seismic Data: Example from Wildcat Hills, Alberta; #90211 (2015)

Draga Talinga and Don Lawton

Search and Discovery.com

..., with the orientation of the axes determined by both the symmetry of the medium and the interface geometry. All inversions of multi-azimuth traveltimes...

2015

Forward Modeling of Seismic Data: Part 7. Geophysical Methods

George Mellman, Paul A. Kunzinger

AAPG Special Volumes

..., an exploding reflector model is often used. Virtual explosive sources are placed along all reflecting interfaces, with source strength proportional...

1992

Abstract: Imaging Oblique Reflectors with Prestack Migration; #90174 (2014)

John C. Bancroft, Thais Guirigay, and Helen Isaac

Search and Discovery.com

... and Ursenbach (2000) where the traveltimes for an oblique reflector in prestack migration may be computed from 4 x 2 cos 2  4h2  2 , 2 VRMS VRMS (2) 4...

2014

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.... An NMO formula is an approximate equation that connects offsets and traveltimes. Using more than two terms in the series (B) improves accuracy...

Unknown

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.... An NMO formula is an approximate equation that connects offsets and traveltimes. Using more than two terms in the series (B) improves accuracy...

Unknown

Abstract: Which Curvature is Right for You? Part - 2; #90174 (2014)

Satinder Chopra and Kurt J. Marfurt

Search and Discovery.com

... such as reflector convergence and reflector rotation about the normal to the reflector dip. While the former attribute is useful in the interpretation of angular...

2014

Abstracts: Seismic Anisotropy of the Marcellus Shale: Feasibility Study for Fracture Characterization; #90173 (2015)

James Gaiser, Alvaro Chaveste, Mary Edrich, Tony Rebec, and Richard Verm

Search and Discovery.com

...-offset traveltimes of P-waves and the two split S-waves. P-wave data quality appears to be very good and accurate elliptical NMO velocity analyses...

2015

Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... depths, in terms of traces, are approximately: Base of Anomaly - 5 traces; Shallow Reflector - 9 traces; Middle Reflector - 18 traces...

1982

Anisotropic Depth Migration Applied in an Area of the Colombian Llanos Foothills as a Tool for Understanding the Structure in Depth

Isabel Cristina Florez, Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... The model geometry shows laterally varying dip in anisotropic strata and lateral-velocity variation above the target reflector; we were not confident that we...

2006

Abstract: TTI Anisotropic Depth Migration: Which Tilt Estimate Should We Use?; #90211 (2015)

Francois Audebert and Volker Dirks

Search and Discovery.com

... parameters (tilt, ε, δ), there exists a solution in terms of Vp0 and the migrated dip of the reflector in the migration medium. Our study hence...

2015

Prestack Depth Imaging Within the Makassar Straits, Eastern Kalimantan, Indonesia

Chris Willacy, Suryadi Oemar, A. Edy Hermantoro, Paul Gilleran

Indonesian Petroleum Association

... data. The inputs to the reflection tomography are traveltimes of seismic events and the output is a structural model of seismic wave interval...

2000

Application of Zero Offset 2D CRS-Stack Method for Low Fold Data: Synthetic and Real Data Examples

R. Sule, A. Hendriyana, P. D. Anggraini, Fatkhan, Alfian, Sardjito, Waluyo, Adriansyah

Indonesian Petroleum Association

... with an assumption that the reflections in the subsurface is either flat or dip with a certain angle. A promising method that can image the subsurface...

2009

Abstract: Seismic Imaging of Imbricate Structures in Mountainous Area: Case Studies; #90211 (2015)

Nanxun Dai, Oz Yilmaz, Weizhong Wang, and Jie Zhang

Search and Discovery.com

... for the near surface. We compute the traveltimes associated with all shot and receiver locations by ray tracing using the initial velocity depth model...

2015

Strike Oriented, Swath Seismic and Its Potential Application to Exploration and Development in the Papuan Fold and Thrust Belt

William F. Robinson IV

Papua New Guinea (PNG) Petroleum Convention Proceedings

... between the swath lines for a given reflector are, in general, proportional to the dip of the bed. For example, reflections from a horizontal surface would...

1996

The response of turbidite slope channels to growth-induced seabed topography

Mike Mayall, Lidia Lonergan, Andrew Bowman, Stephen James, Keith Mills, Tim Primmer, Dave Pope, Louise Rogers, Roxanne Skeene

AAPG Bulletin

.... Regional dip from top right to bottom left. (a, b) Maps of root-mean-squared amplitude extractions in approximately 30-ms two-way traveltime windows...

2010

Abstract: To TTI or not to TTI? Semi-Automated 3D Tomographic Velocity Analysis in the Canadian Foothills: A Case History; #90211 (2015)

Sylvestre Charles, David Mitchell, Rob Holt, Jiwu Lin, and John Mathewson

Search and Discovery.com

... varies spatially within the 3D volume. Defining variable anisotropic parameters via scanning is very difficult in areas with significantly varying dip...

2015

2-D and 3-D Prestack Depth Migration for Complex Geologic Structures Offshore Indonesia

M. Murphy, R. Ottolini, R. Estill, E. Lumadyo, M. Mathias

Indonesian Petroleum Association

... migration is construction of a 3-D interval velocity model. All available data are used in constructing the model: Dip Moveout (DMO) stacking...

1996

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

... and reflector dip, it is commonly appropriate to combine several adjacent CMP profiles into one supergather prior to velocity analysis. See Figure 19...

2001

Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 4: 3-D Seismic Interpretation of an Upper Permian Gas Field in Northwest Germany

H. E. C. Swanenberg, F. X. Fuehrer

AAPG Special Volumes

... carbonates is the reflection originating from the interphase between the salt and the anhydrite covering the carbonates. This “Z-reflector...

2011

From trash to treasure: Three-dimensional basement imaging with “excess” data from oil and gas explorations

Doyeon Kim, and Larry D. Brown

AAPG Bulletin

... basement, arriving back to the array at traveltimes that exceed that harvested for resource exploration purposes. In short, this new generation...

2019

Enhancing Fault Interpretation Through Broadband Processing and Diffraction Imaging: The First and Successful Experience from Madura Offshore Area

Pongga Wardaya, Rino Saputra, Syaeful Amin

Indonesian Petroleum Association

... the migration, giving us a higher resolution fault image after migration. In addition, we implemented a diffraction imaging technique that detects reflector...

2018

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