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The AAPG/Datapages Combined Publications Database

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Three-Dimensional Depth Imaging of Seismic Data to Assess Subsurface Geology in Northern Utah and Southwestern Wyoming

Alvin K. Benson

Utah Geological Association

... of the data using stacking velocities, followed by conversion to depth, was attempted, but after numerous tries with a variety of stacking-velocity functions...


Refraction Profiles Over the Southern Rocky Mountain Trench Area of British Columbia

A. T. Lamb, D. W. Smith

CSPG Bulletin

... the depth to the first high velocity layer and to attempt to identify this layer by velocity measurements. Three inline refraction lines were shot along...


Structural and Tectonic Evolution of Oceanic Crust within the Jurassic Quiet Zone, Offshore Morocco: Chapter 14: African and Mediterranean Margins

James S. Holik, Philip D. Rabinowitz

AAPG Special Volumes

.... With CDP data, the effect of dip is minimized. The depth of resolution is less using CDP velocity analysis relative to sonobuoy analysis since...


The Suitable Method in Generating True Depth Structure Maps to Eliminate Wonocolo Push-Down Effect on Seismic Data and Its Impact on Prospect Evaluation, North Madura Platform, East Java Basin

Haryono Haryanto, Rizki Krishna Pratama, Riaz Alai, M. Afiq B. Mokhtar, Pongga Wardaya, Yonghe Guo, Jun Wang

Indonesian Petroleum Association

... with the interpretation result of the legacy seismic in time domain which shows a four way dip closure (Figure 8). The time to depth conversion was performed using...


Abstract: Geophysical Studies of the Deep Lithosphere Beneath Hudson Bay and Environs: Implications for Paleoproterozoic Assembly of Laurentia; #90172 (2014)

David W. Eaton, Meghan S. Miller, Fiona Darbyshire

Search and

... to about 300 km depth. Monte-Carlo modelling is used to estimate 1D shear wave velocity profiles for each of the dispersion curves. In general, the models...


Abstract: Tomography of a Velocity Modeland Location of Microseismic Events with P, Sv and Sh Waves; #90224 (2015)

Malgorzata Chmiel and Thomas Bardainne

Search and

...-location using P- and S-waves and anisotropic velocity model. The constraint in horizontal and vertical position is the strongest. Depth of the event...


A Simple Guide to Depth Conversion: Part II

Ashley Francis

GEO ExPro Magazine

.... The residuals are the difference between the depth predicted by the velocity model using the seismic time at the well marker and the actual depth...


A New Approach to Time Depth Conversion and Depth Error Estimation for 2D Interpretation Using Seismic Velocities

Rosidah Hardiani, Sanisah Soed, Lothar Schulte

Indonesian Petroleum Association

... is more accurate than depth converting the interpolated time horizons. In addition the lower horizon was depth converted using the average velocity...


The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration

J. E. Stones

Oklahoma City Geological Society

...The Application of a Linear Increase of Velocity with Depth to Seismic Dip Migration J. E. Stones 1958 304 304 The purpose of this paper is two-fold...


Serang Field – Discovery Within a Seismic "Fault Shadow"

Tom Clark, Mike Turk, Joewono Hadiwijoto, Yoseph Partono

Indonesian Petroleum Association

... effect results in an artificial time dip closure. Figure 4. Fault Shadow Velocity Model - Lateral Carbonate Distribution across fault Depth Conversion...


Abstract: Depth Conversion Methodology using a Stochastic Velocity Model for the McMurray Formation; #90171 (2013)

Darren Hinks, Tom Cox, Stephanie Schmidt, Dale Vanhooren, and Sergei Filin

Search and

... positions are received. Traditionally depth conversion using the TDR data set will extract interval or average velocity functions from the TDR and use...


Seismic Imaging and Interpretive Model Building in the Colombian Andes

Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... Depth migration in thrust-belt environments like the Colombian Andes requires an interpretive approach to building a depth-migration velocity model...


Limitations of Reflection Seismograph

L. E. Nugent, Jr.

AAPG Bulletin

... the reflection interfaces, a depth-displacement method, which is calculated by the formula previously mentioned, but using interval velocity, is best...


Seismic Imaging in Anisotropic Media. or... "A Better Way to Moveout and Migrate Long Offset Data"

Rolf Klotz, Martin Bayly, Sue Downie, Swee Leng

Indonesian Petroleum Association

... reflection angles are retained in processing for studies such as amplitude variation with offset (AVO) and depth conversion velocity analysis. Anisotropic...


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

.... At this stage the module used is VELMOD which functions to obtain a velocity interval model for migration in the domain depth. In subsurface modelling...


Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia

Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith

AAPG Bulletin

... surface for this region. Figure 11. The seismic line in Figure 10, converted to depth using the velocity model of Figure 10C. Dashed line at base...


A Time Migration Before Stack

Richard Cooper, Malcolm Hobson

Geological Society of Malaysia (GSM)

... a more accurate velocity field for migration and depth conversion. The robust nature of the method allows its application to routine data processing...



E. J. Assiter

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... and migration data for application to maps * 12. Plot out depth maps and cross-sections using a velocity function, gradient or surface Quite obviously...


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...


Critical Analysis of Stack Seismic Systems: DISCUSSION

Richard H. Hopkins

AAPG Bulletin

... "stacks" or not. Calculations for the stretch of the CDP for a reflector at 5,000 ft with a dip of 10° show it to be about 200 ft on the subsurface...


Velocity for Pore Pressure Prediction Modeling and Risk Assessment

Selim Simon Shaker

GCAGS Transactions

...). Red dashed trend represents the average FFP vs. depth. Predicting the pressure in this zone, using seismic velocity, is a challenging task...


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