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The AAPG/Datapages Combined Publications Database

Showing 660 Results. Searched 195,387 documents.

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7.0 The Structural Significance of Seismic Velocity - A Progress Report

P. E. Gretener

AAPG Special Volumes

... of CDP SHOOTING demanding large offsets as a matter of routine. It has thus become possible to determine seismic velocity using normal moveout (NMO...

1981

A Comparative Study of Wave Equation Multiple Suppression to Conventional Tau-p Deconvolution and Radon Multiple Attenuation Methods

Kriyanti Setiyono, Ken H. Matson

Indonesian Petroleum Association

... prior to the stacking process. Radon Radon demultiple exploits differential moveout to discriminate between multiples and primary events. Initially...

2000

Fault Interpretation Problems in the Southeast Barrow Sub-Basin

R. K. Whyte

Petroleum Exploration Society of Australia (PESA)

... 13b shows the corresponding COP gather. This is a simple geological situation with no lateral velocity variation. The moveout curve is smooth...

1994

Getting it Right the First Time in the Ceduna Sub-Basin: Regional and Target Depth Imaging in a Frontier Setting

Weidi Koh

Australian Petroleum Production & Exploration Association (APPEA) Journal

... optimised velocity model building (VMB) workflow improved turnaround time while, at the same time, being amplitude versus offset (AVO) compliant. Third...

2017

Pore-Pressure Prediction in the Permian Basin Using Seismic Prestack Inversion

Colin Sayers, Lennert den Boer

Unconventional Resources Technology Conference (URTEC)

.... In such reservoirs, changes in lithology occur over vertical depth intervals too small to be resolved using seismic velocities derived by means of normal moveout...

2019

Understanding the causes of low frequency shadow below gas hydrates

Ayman Noor M. Qadrouh, Saad Alajmi

Petroleum Exploration Society of Australia (PESA)

... causes of LFS are the presence of free gas or normal moveout (NMO) stretching. In order to have a deep understanding of the low frequency shadow causes...

2019

Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018)

Yujin Liu, Yan Wu, Xiongwen Wang, Tong W. Fei, Yi Luo

Search and Discovery.com

...Abstract: Subsalt Velocity Estimation Using Wave-Equation Tomography with Surface Offset Gathers; #90319 (2018) Yujin Liu, Yan Wu, Xiongwen Wang...

2018

Abstract: Salt Shape Tomography; #90254 (2016)

Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha

Search and Discovery.com

... at their boundaries with surrounding media. The data to invert mainly consists of residual moveout (RMO) information picked below the strong velocity...

2016

Abstract: A Comparison of Standard Migration with EOM for Hussar Data; #90174 (2014)

Thais A. Guirigay, John C. Bancroft, and J. Helen Isaac

Search and Discovery.com

... is the application of a simplified Kirchhoff migration on the CSP, that consists of scaling, filtering, normal moveout (NMO) and stacking. CSP gathers...

2014

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02  x 2 VRMS (1) Here T0...

Unknown

Long-Offset Approximations to NMO Function for a Layered Subsurface

E. Blias

Search and Discovery.com

.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02  x 2 VRMS (1) Here T0...

Unknown

High Performance Computation by Graphics Processor Unit Technology for Geophysical Seismic Signal Processing, #40727 (2011)

Sunjay Sunjay

Search and Discovery.com

... filtering would help, or maybe it needs a minor velocity tweak and a test of the stacking parameters to optimize the poststack trace or improve AVO...

2011

The Geophysicist Communicating with Seismic Processing

R. E. Sheriff

Southeast Asia Petroleum Exploration Society (SEAPEX)

... indicate the semblance for various stacking velocity values as a function of arrival time. The graphs at the top show the output amplitude...

1980

Simultaneous 3D 4C - OBC & VSP Walkaway Survey in the Attaka Field, East Kalimantan, Indonesia

Bill Borland, Phil Johnston, Mike Reblin, Suta Vijaya, Omar Kulbrandstad, Muhammad Idrees, Scott Leaney, Jan van de Mortel

Indonesian Petroleum Association

... data was acquired to determine the shear wave velocity structure in the area. This included a 3D VSP acquisition which was done simultaneously...

2000

How to Improve the Definition of Seismic Reflection Data

D. Michon, R. Garotta

Indonesian Petroleum Association

... to the normal moveout. Fig. 2. Let us consider a one second two-way time reflection. For a few offsets the apparent horizontal velocity, as given by the slope...

1979

Current Trends in Geophysics

H. E. Stommel, J. M. Graul

Indonesian Petroleum Association

... of in this connection, wave equation processing is by no means limited to this important concept. Improved velocity estimates, stacking procedures, coherency...

1978

Abstract: Estimation of Group Velocity using Slant Stack Generalized S Transform Based Method; #90174 (2014)

Roohollah Askari, Robert J. Ferguson, and Kristof DeMeersman

Search and Discovery.com

...Abstract: Estimation of Group Velocity using Slant Stack Generalized S Transform Based Method; #90174 (2014) Roohollah Askari, Robert J. Ferguson...

2014

Large-Scale Pore Pressure Prediction After Pre-Stack Depth Migration in the Caspian Sea (Geophysics Paper 24)

Norbert van de Coevering, Hazim Hameed Al-Dabagh, Liau Min Hoe, Tony Jolly

Geological Society of Malaysia (GSM)

... with a 2nd order stacking velocity correction. Such an automated velocity analysis was performed using a grid of 8 Inlines x 8 Crosslines (100 m x 100 m...

2008

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

... the compressional velocity arriving at the same time and exists at moderate offsets. Compressional modeling would therefore be unable to match the moveout...

1987

Abstract: First-Arrival TomoStatics and Residual Statics for Near-Surface Corrections; #90211 (2015)

Jie Zhang, Oz Yilmaz, and Nanxun Dai

Search and Discovery.com

... intermediate datum, and then back to a floating datum with a constant replacement velocity. We shall then apply the tomostatics to the far-offset...

2015

High-End Model Building Techniques for Revealing a Pre-Carbonate Reservoir Offshore East Natuna Basin, Indonesia

Jun Wang, Yonghe Guo, Yitao Chen, Muhammad Nauvall Juliansyah, Nick Crabtree

Indonesian Petroleum Association

... information and dense residual moveout (RMO) information to produce an accurate velocity update for the deep section. The imaging uplift brought...

2023

Geomechanical and Geophysical Analysis of a Wattenberg Field through Wavefield Re-Datuming and Inversion

Jyoti Behura, Pete Smith, Oscar Quezada

Unconventional Resources Technology Conference (URTEC)

..., we aim to extract rock properties derived from AVO, velocity, and attenuation analyses that play key roles in the characterization and development...

2016

2D Survey Earth Model Building and Depth Imaging Using 3D Grid-Based Tomography Technology

Eric Pearson, Suyang Chen

Indonesian Petroleum Association

... direction). In this area, the geologic structure and associated seismic velocity model are extremely complex. In order to achieve the best possible...

2012

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