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Showing 29,091 Results. Searched 195,387 documents.
Abstract: LSPSM for Pre-and Poststack Time Lapse Studies; #90187 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
... which may dominate the changes of the reflectivity model. The least squares prestack Kirchhoff migration (LSPSM) is performed separately on both...
2014
Abstract: Using-MultiFocusing 3D Diffraction Imaging to Predict Fracture Corridors/swarms in the Bazhenov Formation; #90187 (2014)
Marianne Rauch-Davies, Alex Berkovitch, Danil Pelman, and Kostya Deev
Search and Discovery.com
... of this section is computed from prestack traces arbitrarily located around an imaging position. The moveout correction does not require knowledge about...
2014
EXTENDED ABSTRACT: Regional Geology of Deep Water Salt Architecture, Offshore Gulf of Mexico
Chowdhury, Abu and Lopez-Mora, Simon
GCAGS Transactions
... and structures of the deep water region. The salt interpretation was used as an initial model for velocity modeling for prestack depth migration...
2004
Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
... are essentially transpose process. In the case of Kirchhoff modelling, the transpose process is prestack Kirchhoff migration which is defined by, ̂ , (...
2014
Abstract: Enhanced Surface Seismic Data Processing Using Simultaneous Acquired DAS-VSP Data; #91204 (2023)
Gang Yu, Jinliang Xiong, Junjun Wu, Yuanzhong Chen, Yingshui Zhao
Search and Discovery.com
... to complete the prestack depth migration of the viscous acoustic waves, and analysed numerically the sensitivity of the macro Q model error based...
2023
Seismic Velocity Model Building in an Area of Complex Geology, Southern Alberta, Canada
Helen Isaac and Don Lawton
Search and Discovery.com
... geology. 1 Outline • Introduction to study area • Geology • Time migrated seismic data • Development of velocity models for prestack depth migration...
2009
Abstract: 3D Seismic Imaging in the Pakistan Foothills: A Case History; #90172 (2014)
Victor Dolgov, Rob Vestrum, Jon Gittins, Géza Wittman
Search and Discovery.com
... and a refraction-statics solution, we calculated residual statics over the entire survey. Prestack time migration Kirchhoff prestack time migration...
2014
Model-Based, 2-D Seismic Definition of Subthrust Structure in the Uranium Peak Area, Northwest Colorado
George C. Robertson, Dirk W. McDermott, Rex L. Tang
Rocky Mountain Association of Geologists
... employing model-based, prestack depth migration of 2-D seismic data was utilized to predict the presence of a subthrust Paleozoic section in this frontier...
1995
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
...An approach to reduce exploration risk using spectral decomposition, prestack inversion, and seismic facies classification Carlos Jesus, Wagner...
2020
Depth correction using velocity for structure calibration at Leviathan Field, offshore Israel
Yijie Zhou, Brad Christensen, Lin Christianson
International Meeting for Applied Geoscience and Energy (IMAGE)
... correction process after the seismic migration. Depth Correction Workflow The proposed workflow converts seismic and related interpretations to time using...
2023
Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)
Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave
Search and Discovery.com
... coherencies on common image gather (CIG)s is extended to the least squares prestack migration (LSPSM) CIGs. It is shown that when the data are incompletely...
2014
What Causes those Annoying Stair-Step Artifacts on Coherence Volumes?; #42036 (2017)
Tengfei Lin, Kurt J. Marfurt
Search and Discovery.com
... algorithms that explicitly include an obliquity factor actually assume each subsurface point is part of a specular reflector. In prestack migration...
2017
Mahogany Field, a Subsalt Legend: A Tale of Technology, Timing and Tenacity, Offshore Gulf of Mexico
Wayne K. Camp and Donn McGuire
Houston Geological Society Bulletin
...), success in the play would prove to be elusive until a decade later. Advances in seismic technology, primarily 3D prestack depth migration, way...
1997
Abstract: Converted-wave Time Imaging Nuts and Bolts; #90187 (2014)
Shaowu Wang, Thomas Hollis, and Wayne Nowry
Search and Discovery.com
.... Introduction Pre-stack time migration (PSTM) is routinely used in time processing with gentle lateral velocity variation and moderate subsurface...
2014
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)
... Migration in this kind of structurally complex zones. INTRODUCTION The foothills belt of the Eastern Cordillera involves high dipping siliciclastic...
2006
3-D Surface Seismic Attribute and Prestack Impedance Inversion Characterization of the Red Fork Formation, Oklahoma, USA; #41167 (2013)
Yoryenys Del Moro, Alfredo Fernandez, Sumit Verma, and Kurt Marfurt
Search and Discovery.com
...3-D Surface Seismic Attribute and Prestack Impedance Inversion Characterization of the Red Fork Formation, Oklahoma, USA; #41167 (2013) Yoryenys Del...
2013
Imaging of Fractures and Faults inside Granite Basement Using Controlled Beam Migration (Geophysics Paper 5)
Don Pham, Jason Sun, James Sun, Qingbing Tang, Graeme Bone, Nguyen Truong Giang
Geological Society of Malaysia (GSM)
.... In 2002, a study was carried out in the area using Kirchhoff prestack depth migration, which included horizon-based model building up to the basement...
2008
Exploring the horizontal component of OBN surveys for added value to imaging
Samara Omar, Jim Simmons, Carlos Calderón
International Meeting for Applied Geoscience and Energy (IMAGE)
... approach to seismic modeling and prestack depth migration: 63rd Annual International Meeting, SEG, Expanded Abstracts, 888–891, doi: https://doi.org...
2023
Geophysical characterization of stratigraphic traps within the slope failure turbidite channel of Torok formation, north Slope of Alaska
Sagnik Dasgupta, Charles Inyang, Seth Riseman, David Ruckel
International Meeting for Applied Geoscience and Energy (IMAGE)
... had gone through the signal processing steps and anisotropic prestack depth migration sequence described in Alexander et al 2017. Angle stacks were used...
2023
Abstract: Imaging Scattered Seismic Energy in Alberta Oil Sands; #90187 (2014)
Andrew V. Barrett
Search and Discovery.com
.... Kirchhoff PSTM was modified with the introduction of the concept of a differential migration time gather, where each trace in the gather represents...
2014
Abstract: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)
Stewart Trickett, Lynn Burroughs, and Andrew Milton
Search and Discovery.com
... noise before prestack migration, as the migration operator will smear the noise across the section, making it impossible to correct afterwards. Over...
2014
Abstract: Complex-beam Migration: Non-recursive and Recursive Implementations; #90187 (2014)
Tianfei Zhu
Search and Discovery.com
...-beam method for shot-domain prestack depth migration. The method is flexible with input geometry and accurate in imaging multipathing arrivals...
2014
Seismic Imaging and Interpretive Model Building in the Colombian Andes
Rob Vestrum
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... as compared to the prestack time migration of the same data. INTRODUCTION Anisotropic depth migration in thrust-belt environments has the greatest...
2006
Unconventional Play Fracture Characterization Through Orthorhombic Depth Model Building
Guy Hilburn, Amit Pendharkar, William Keller, René Mott, Jorge Peinado, Austin Jumper, Victor Kriechbaum
Unconventional Resources Technology Conference (URTEC)
... standard approach to modeling unconventional play anisotropy is by applying a postprocessing correction to prestack time migration (PSTM, or time...
2018
Utilizing Seismic in Exploring for Subtle Traps
Kevin Werth, Patrick Bygott, Edward Teyland
PTTC
... later in the design portion ofthis paper. Less directly, but equally important is the role..dip plays in determining the need for dip moveout(DMO...
2003