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The AAPG/Datapages Combined Publications Database

Showing 44,500 Results. Searched 187,807 documents.

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AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

..., if it is assumed that then and The first set of equations gives depth, average velocity, and interval velocity as functions of vertical two- way...

2001

Advances in Depth Imaging Technology: Rock Physics Guided Migration of Seismic Data in 3D

Nader C. Dutta, Sherman Yang, Jianchun Dai

Indonesian Petroleum Association

... and vertical depth but the process has also generated a velocity field that can be directly used in earth property estimation such as pore pressure...

2012

Chart Migrations

Frank A. Roberts

Oklahoma City Geological Society

... points is required to avoid using a constant velocity. Figure 2. End_Page 305------------------------ The accuracy in depth is limited...

1958

ABSTRACT: Mudstone Compaction Trends and their Use in Pore-Pressure Prediction

Nazmul Haque Mondol, Knut Bjorlykke, and Jens Jahren

GCAGS Transactions

... potentiality to develop overpressure even at shallow or moderate burial depth. Calculations assuming vertical flow show that fracture pressure...

2008

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... be obtained using the method of Ursenbach et al. (2005). Recent developments have improved this method so that calculations may be readily carried out...

2015

Slide Rule Seismic Computations

Robert H. Mansfield

Oklahoma City Geological Society

... a wide range of possible velocity functions. The circular ray path obtained by using a linear increase of velocity with depth provides a rather accurate...

1958

Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)

Emil Blias

Search and Discovery.com

... velocity analysis. We see large lateral stacking velocity fluctuations increasing with depth. An initial shallow velocity model was built, using...

2015

Velocity Conditioning for an Improved Depth Conversion, #40743 (2011)

Ang Chin Tee, M. Hafizal Zahir, M. Faizal Rahim, Nor Azhar Ibrahim, Boshara M. Arshin

Search and Discovery.com

... geologically feasible lateral and vertical velocity variations. This makes it particularly suitable for time-to-depth conversion in a complex...

2011

Rapid Multiple-Scenario Depth Structure Risk Analysis Case Study in Cuulong Basin, Vietnam

Nguyen Nam, Hong Shien Lee

Indonesian Petroleum Association

... illustrates depth conversion using 3D velocity model that calibrates many sources including seismic velocities, time depth functions, well picks and surfaces...

2008

Determination and Delineation of Anomalously Pressured Gas Accumulations in the Siberia Area, Washakie Basin, Wyoming

Ronald C. Surdam, Zun Sheng Jiao, Yuri Ganshin, Nicholas G. K. Boyd III

Wyoming Geological Association

.... Surdam, R.C., J. Robinson, Z.S. Jiao, N.K. Boyd, 2001, Delineation of Jonah Field Using Seismic and Sonic Velocity Interpretations, in D.S. Anderson...

2001

High-Resolution Model Building in a Full-Azimuth Nodal Survey in the GOM

Sandip Chattopadhyay, Gary Rodriguez, Tefera Eshete, Guy Hilburn, TGS

GEO ExPro Magazine

... were edited before using them for calibration. Scalar functions were derived at checkshot locations to match the migration velocity to the checkshots...

2016

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 Discovery.com

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

2015

Influence of Lithology and Neogene Uplift on Seismic Velocities in Denmark: Implications for Depth Conversion of Maps

Peter Japsen

AAPG Bulletin

... < 100 m and by 100 for ^Dgrz >= 100 m. No attempt, however, was made to establish velocity-depth functions corresponding to normal compaction curves...

1993

RhoVe Method Empirical Pore Pressure Transform, #42301 (2018).

M. Czerniak,

Search and Discovery.com

... are mathematically linked to a continuous series of “virtual” velocity-depth normal compaction trend functions. The calculations are limited by bounding end-member...

2018

A Comparison of Depth-Conversion Methods in the Gulf of Mexico

Melvan D. Carter, Gary R. Hyatt

GCAGS Transactions

... for each layer is given the mean value Figure 1. Depth error between the wells and the seismic depth derived from using seismic times and a mean velocity...

1990

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...

2013

Incorporation of Geology, Wells, and Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables True Earth ModelŽ, #40828 (2011)

Huyen Bui, Peck-Hwa David Ng, Jenny Zhou, Chih-Wen Kue, Mart Smith

Search and Discovery.com

.... Likely, it was thought that, if the depth-migrated velocity was wrong, seismic anisotropic functions (Thomsen’s delta and epsilon) were also wrong...

2011

Incorporation of Geology, Wells, Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables True Earth ModelŽ, #40862 (2012)

Huyen Bui, Peck Hwa David Ng, Jenny Zhou, Chih-Wen Kue, Martiris Smith

Search and Discovery.com

... velocity was wrong, seismic anisotropic functions (Thomsen’s delta and epsilon) were wrong in a vertical transverse isotropic (VTI) case. In fact...

2012

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 Discovery.com

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

2013

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...

2000

The Seismic and Geological Definition of a Reef

R. A. Maxwell, W. Thomsen, F. Wilson

Oklahoma City Geological Society

.... Interval velocity calculations were made on each of the three functions of Figure 6. In Figure 7 the results of the analysis from the shelf function (M5...

1973

RhoVe T Method Empirical Velocity-Density-Temperature-Effective Stress Transform

Matt Czerniak

GCAGS Transactions

... Figure 1: v-z), to density-“virtual” depth (rho-z) on-the-fly using the a-term active curve and end-members (v-rho) as a series of velocity-density...

2019

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