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The AAPG/Datapages Combined Publications Database

Showing 613 Results. Searched 188,956 documents.

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A Time Migration Before Stack

Richard Cooper, Malcolm Hobson

Geological Society of Malaysia (GSM)

... to the true vertical velocity MIGRATION FOR OPTIMUM VELOCITY ANALYSIS AND STACKING Velocity Analysis Normal moveout Dip Moveout Velocity Analysis Stack...


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

David W. Bell

AAPG Special Volumes

... showing hyperbolic moveout with offset; (C) CMP gather after normal moveout correction using stacking-velocity picks; (D) constant stacking...


Migration Velocity Analysis by Migration of Velocity Spectra

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

... reasonably be met, even for large 3-D surveys. Migration velocity estimates are typically based on stacking velocities obtained from dip moveout (DMO...


A Regional Velocity Cube for Depth Conversion on the Northwest Shelf

Maighréad Ní Dheasúna, Mark Ballesteros, James Leven

Petroleum Exploration Society of Australia (PESA)

... this hiQbe'M velocity cube, data, and ca n also provide useful indications moveout, and to effectively stack reflection and illustrates some...


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

Andy Furniss

Petroleum Exploration Society of Australia (PESA)

... world, where at least one of these assumptions is invalid, seismic raypaths will show non-hyperbolic moveout causing stacking velocity and RMS velocity...


Imaging Beneath Complex Structure

K. Larner, B. Gibson, and R. Chambers

AAPG Special Volumes

.... For such an inhomogeneous velocity structure, shortcomings in common midpoint stacking are directly related to highly non-hyperbolic moveout. As with migration...


Imaging Beneath Complex Structure: Case History: ABSTRACT

Ken Larner, Bruce Gibson, Ron Chambers

AAPG Bulletin

..., shortcomings in CDP stacking are directly related to highly non-hyperbolic moveout. As with migration velocity, no proper stacking velocity can...


Imaging Beneath Complex Structure: A Case History: ABSTRACT

Bruce Gibson, Ken Larner, Ron Chambers

AAPG Bulletin

... are related directly to highly nonhyperbolic moveout. As with migration velocity, no proper stacking velocity can be developed for these data, even from...


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

... 2000 1 8 Anisotropic effects are observed for the moveout velocity on surface seismic data as reflection angles increase. An alternative...


Abstract: Seismic Imaging of Imbricate Structures in Mountainous Area: Case Studies; #90211 (2015)

Nanxun Dai, Oz Yilmaz, Weizhong Wang, and Jie Zhang

Search and

... velocity variations prohibits analytic or linear inversion methods to delineate the near-surface model. Additionally, the nonhyperbolic moveout behavior...


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

Andy Furniss

Indonesian Petroleum Association

... will show non-hyperbolic moveout causing stacking velocity and RMS velocity to differ. This produces inaccurate results from the Dix equation. In 2D...


Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

.... The choice of the model was made to examine a range of moveout complexity while using nominal velocity-depth values. Figure 2. Model depth section...


The Application of Image Processing Techniques for Complex Structures

V. Sudhakar, I. T. McMahon

Indonesian Petroleum Association

... separated by the simple but critical process of Normal Moveout correction (NMO) and Common Mid-point (CMP) stack. NMO and CMP stacking require...


Hybridised Weighted Boot-Strap Differential Semblance

Hamish Wilson, Lutz Gross

Petroleum Exploration Society of Australia (PESA)

... of this final model is velocity analysis. Conventional normal moveout (NMO) velocity analysis is utilised to produce a move-out or stacking velocity field...


Abstract: 2D Depth Velocity Analysis without Tomography; #90187 (2014)

J. Patrick Butler and Randy Kolesar

Search and

... Engineering Partnership, 6-12 May 2013, Calgary, AB, Canada elsewhere. The velocity field is a unique stacking velocity at each CDP and each time...


A Southern North Sea Multi-Survey preSDM using Hybrid Gridded Tomography, #41592 (2015).

Ian Jones, Emma Evans, Darren Judd, Alan Campbell, Steve Elam

Search and

... The initial depth velocity model was built from stacking velocities converted to interval velocity in depth. The water bottom was picked and gridded...


Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)

Sunjay Sunjay,

Search and

... in the conventional CMP stacking. Analytical expressions (based on the spherical representation of wavefronts) describe the moveout correction...


Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools

Duane Dopkin, Anat Canning, Philip Neri

Indonesian Petroleum Association

... a detailed automatic residual moveout/velocity analysis in a robust and effective way. MULTI AZIMUTH VELOCITY ANALYSIS There are two ways to deal...


Abstract: An Analysis of the Benefits of 3D Pre-Stack Time Migration (Paper 11)

Peter Whiting

Geological Society of Malaysia (GSM)

.... Multivalued moveout velocities are still present after NMO/DMO due to the approximate velocity fields used in their application. It can also be shown...


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

... were produced of reflector coherency as a function of stacking velocity and two-way travel time (Figure 6). These coherency plots were used...


Abstract: A Geophysical Appraisal of the East Spar Gas/Condensate Field

Adam Craig

Petroleum Exploration Society of Australia (PESA)

... was constructed by detailed interpretation of gas/condensate field the WA-214-P joint normal moveout velocities from seismic change. Such gas sands...


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