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The AAPG/Datapages Combined Publications Database

Showing 30,621 Results. Searched 189,607 documents.

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The Application of Velocities and Models to Seismic Interpretation

G. Jarrota

Indonesian Petroleum Association

... that can be used for the study of seismic velocities, and their applications to seismic interpretation. The velocity spectrum or velocity analysis (Fig...


Integration of Geologic Data into Structural Imaging of the Andean Subthrust, Peru; #41605 (2015)

Margaret A. Stratton, Robert Vestrum, Dennis Ellison

Search and

... velocity model in this complex-structure environment, we decided to reprocess the lines through to anisotropic depth migration. Geologic constraints...


2D Pre-Stack Depth Migration : Application to Inverted Grabens

C. Bunks, P. L. Pichon, L. Ben Brahim, Sekar Sakti

Indonesian Petroleum Association

... an in house 2D pre-stack depth migration and velocity analysis program called MIGPACK. MIGPACK performs finite-difference migration in the source geophone...


Abstract: Prestack Gaussian-Beam Depth Migration in Anisotropic Media; #90211 (2015)

Tianfei Zhu, Sam Gray, and Daoliu Wang

Search and

... depth migration potentially useful for AVO analysis in geologically complex areas. Extension of prestack GB migration from isotropic to anisotropic media...


Application of Advanced Depth Imaging Technology in Shallow Water Offshore Indonesia

Michael Gidding, Suyang Chen, Steven Wiseman, Moch Asrori, Richard Bolton

Indonesian Petroleum Association

... gradients.Grid based tomography is a robust, 3D ray-based inversion method used to refine velocity models for depth migration. Residual traveltime errors...


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)

... procedure for prestack migration and velocity analysis: Presented at the 46th Ann. Mtg. European Asn. Expl. Geophys. Wang, W. and West, G., 1991, F-X filters...


ABSTRACT: Wave Equation Prestack Depth Migration for Deep Gulf Coast Prospecting

Morgan Brown, Joe Higginbotham, Cosmin Macesanu

GCAGS Transactions

... successfully for some time to image the deep section when pressure is an issue. Provided that the velocity complexity can be encoded into a migration...


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Search and

... in the data. To develop a velocity model for pre-stack depth migration (PSDM) we integrated all available sources of velocity and geological information...


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Search and

... in the data. To develop a velocity model for pre-stack depth migration (PSDM) we integrated all available sources of velocity and geological information...


Modified Residual Migration

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

...: Removing the restrictions on depth-varying velocity: Geophysics, 53, 881–893. Black, J., and Brzostowski, M., 1990, High-dip time migration: 60th Ann...


Velocity and Velocity

M. Al-Chalabi

Petroleum Exploration Society of Australia (PESA)

... if the so called 'velocity' parameter, used in the migration, accurately represented the true velocity field. It does not. As shown below, the 'velocity...


Abstract: Velocity Updating for Converted-Wave Prestack Time Migration; #90211 (2015)

Xiaogui Miao

Search and

... data using initial velocities from NMO analysis or from previous migration velocity analysis, and partially shifting energy along diffraction curves...


Imaging Beneath Gas - A Prestack Depth Migration Case Study (Paper 34)

Osman Khan, Uwe Klein-Helmkamp, Peter Whiting, Tim Chapman

Geological Society of Malaysia (GSM)

.... After two iterations of manual velocity updates, two iterations of post-migration “Residual Curvature Analysis” (RCA) tomography were used to further...


Application of Traveltime Tomography and Kirchhoff Migration Methods to Improve the Seismic Cross-Section Resolution on 2D Land Seismic Data

Harmita Lestari, Nur Ayu Anas, Muh. Resky Ariansyah, Sabrianto Aswad, Heri Winarto

Indonesian Petroleum Association

... is generated for each parameter entered. The speed analysis uses the Kirchhoff migration type. After scanning the velocity automatically, the next step...


Application of Wave Equation Tomography in Frontier Areas

Tien-when Lo, Guy W. Purnell

Indonesian Petroleum Association

... line (Figure 3). The velocity model (Figure 4) used in the prestack depth migration was derived by an interactive prestack focusing velocity analysis...


Arafura Sea Seismic Processing: Importance of Iterating Velocity Analysis and Integrating Regional Geology to Counter Signal Masking by Major Unconformities

Rahadian Adhyaksawan, Paulus T. Allo, Maria Raharja, Muhammad Isjmiradi, Mark Boyd

Indonesian Petroleum Association

...Arafura Sea Seismic Processing: Importance of Iterating Velocity Analysis and Integrating Regional Geology to Counter Signal Masking by Major...


Abstract: Converted-wave Time Imaging … Nuts and Bolts; #90187 (2014)

Shaowu Wang, Thomas Hollis, and Wayne Nowry

Search and

.... Introduction Pre-stack time migration (PSTM) is routinely used in time processing with gentle lateral velocity variation and moderate subsurface...


Seismic Velocity Model Building in an Area of Complex Geology, Southern Alberta, Canada

Helen Isaac and Don Lawton

Search and

... sections, near-surface velocity models from refraction statics analysis, averaged sonic interval velocities and limited migration velocity analysis...


Abstract: DREAM™ - Drilling and Real Time Migration: A New Method for the Geophysical Monitoring of Wells

Luca Bertelli, Luca Savini, and Luca Aleotti

Houston Geological Society Bulletin

... update the velocity field while drilling, and thus to refine the depth model and iterate the depth migration. The seismic velocities obtained...


Reveal The Velocity Anomalies in Complex Overburden and Enhanced The Imaging through Shallow Gas: A Case Study in SisiNubi Mahakam, Indonesia

Annas Astuti, Yohanes Kristomo, Bee Jik Lim, Ginanjar Satria, Natalia Anggriani

Indonesian Petroleum Association

... and reimaging the existing legacy data with Q prestack Kirchhoff depth migration performed in 2011 and 2014 did not accurately model the sharp velocity...


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