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The AAPG/Datapages Combined Publications Database

Showing 15,515 Results. Searched 189,607 documents.

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An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement

Andy Furniss

Petroleum Exploration Society of Australia (PESA)

... Refinement The quality of a velocity model used for PSDM can be assessed by analysing the output common reflection point (CRP) gathers. For a given CRP...

1999

Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)

Thais A. Guirigay and John B. Bancroft

Search and Discovery.com

... and common scatter points (CSP). During the process, a converted wave velocity Vc was estimated from the hyperbolic moveout on CSP gathers. Moveout (MO...

2015

ABSTRACT: Reverse Time Migration Using CRS Shot Gathers

Alfredo Caballero, Rodolfo Ballesteros, Eliakim Schuenemann, Ekkehard Tessmer, Humberto Salazar

GCAGS Transactions

...) technique was previously used for an enhancement of seismic prestack data, providing so-called CRS gathers with regularized common mid-point CMP and offset...

2011

An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement

Andy Furniss

Indonesian Petroleum Association

... domain. Velocity Model Refinement The quality of a velocity model used for PSDM can be assessed by analysing the output common reflection point (CRP...

2000

Beam Migration for Imaging of Complex Structures

Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki

Indonesian Petroleum Association

... are then iterated until a satisfactory velocity model is developed for which the common reflection point depth gathers are adequately flat. The final...

2009

Abstract: Maximize the Potential of Seismic Data in Shale Exploration and Production … Examples from the Barnett Shale and the Eagle Ford Shale; #90187 (2014)

Joanne Wang and Duane Dopkin

Search and Discovery.com

... orientation through anisotropic velocity analysis and azimuthal AVO technique. Geomechanical property generation requires input of reflection angle data...

2014

Chapter 10-part 3: 3-D Depth Image Interpretation

William L. Abriel, Joseph P. Stefani, Robert D. Shank, David C. Bartel

AAPG Special Volumes

...). This allows subsurface reflection points (common reflection point: CRP) to add together when the earth velocity can be approximated by flat layers. However...

2011

Investigation of DMO Algorithms during Test-Line Processing: Some Recommendations

Ng Tong San, Mohd. Hashim Abas, Leong Lap Sau

Geological Society of Malaysia (GSM)

... with dipping reflectors. Recapitulating, DMO can now be defined as a process that creates apparent common-reflection point gathers from common-midpoint...

1996

Abstract: A Comparison of 3D Azimuth-Angle Domain Common Image Gathers using Poynting Vector and Optical Flow Methods; #90254 (2016)

Young Seo Kim, Constantine Tsingas

Search and Discovery.com

...Abstract: A Comparison of 3D Azimuth-Angle Domain Common Image Gathers using Poynting Vector and Optical Flow Methods; #90254 (2016) Young Seo Kim...

2016

Anisotropic Pre-Stack Depth Migration in the Cusiana and Cupiagua Sur Fields

J. Checa, M. Mesa, N. Burke, J. Calderon, H. Alfonso, U. Egozi, B. Ver West, M. Yates

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... to the simple initial RMS velocity field. Using this velocity field as an input, common image gathers were generated, and the flatness of the gathers was used...

2006

Forward Modeling to Improve Seismic Acquisition Design

Paula A.C. Barbosa, Jose A. Jaramillo, Jose H. Olaya

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... of section A: Common Depth Point (CDP), Common Reflection Point (CRP), incidence angle, reflection amplitude, geometrical spreading factor and shot...

2006

Velocity Analyses of Near Seafloor Strata Based on Multichannel Seismic Data from the Tonga Platform

Jeffrey E. Cole, Dennis M. Mann

Circum Pacific Council Publications

... for the correct stacking of common-depth-point (CDP) data and the production of true-depth sections. The seismic reflection data from the Tonga platform suggested...

1985

Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique

Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu

Unconventional Resources Technology Conference (URTEC)

... gathers. The common reflection point (CRP) gathers obtained from conventional azimuth processing will dim the real seismic response while seismic wave...

2015

Geoscience Integration and Interpretive Model Building to Overcome Seismic Imaging Problems in Foothills Environments; #41547 (2015)

Rob Vestrum

Search and Discovery.com

... gathers, we may use this display to quickly refine the velocity picks at a control point. Where we have low pre-stack signal, the image gathers...

2015

Long Offset AVO in a Midcontinent Tight Gas Sand Reservoir

Pankhurst, Duane, Marfurt, Kurt, Sullivan, Charlotte

GCAGS Transactions

... the objective depth, providing an opportunity to evaluate prestack common reflection point (CRP) gathers at very long offsets. On stacked sections...

2002

Abstract: Improved Imaging of a Fold and Thrust Belt Regime, Onshore Trinidad, by Means of the Common Reflection Surface (CRS) Method; #90238 (2015)

Dennis Otto, Philip Schlueter, Terrell Dhanpaul, Samuel Ragbir, Curtis Archie, and Nancy Gallai-Ragobar

Search and Discovery.com

... gathers were calculated and inputted into another iteration of stacking velocity analysis. Thus, the velocity analysis could benefit from the improved...

2015

Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I … Algorithm

Jianhua Pan

Search and Discovery.com

... to convert rms velocity to interval velocity by using Dix’s equation. Time migration can be viewed as a valid imaging process but its imaging...

Unknown

Wavefield Extrapolation for Prestack Time Migration with RMS Velocity: Part I … Algorithm

Jianhua Pan

Search and Discovery.com

... to convert rms velocity to interval velocity by using Dix’s equation. Time migration can be viewed as a valid imaging process but its imaging...

Unknown

Seismic Imaging through Outcropping Carbonates: An Example from the Canadian Rocky Mountains, , #41533 (2015).

Yong Hua, Don C. Lawton

Search and Discovery.com

... picked using semblance analysis and constant velocity stack scans. The velocities were then used to create NMO-corrected gathers. A manually picked...

2015

Velocity and Velocity

M. Al-Chalabi

Petroleum Exploration Society of Australia (PESA)

... to a common reflection point (e.g. Deregowski, 1990). The factors listed below are among the main factors that cause the parameter, treated in PreSDM...

2000

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

... migrate the shot gathers using the rms velocity field derived from the interpretation of the velocity cube based on the selected near-surface strategy...

2015

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