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The AAPG/Datapages Combined Publications Database

Showing 613 Results. Searched 188,963 documents.

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ABSTRACT: Analysis of Moho Depth and Crustal Vp/Vs Ratios in the Western U.S.; #90113 (2010)

Kristopher A. Castille and Harold Gurrola

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.... The depth to the Moho and average Vp/Vs ratio of the crust (Pwave velocity divided by S-wave velocity) can be estimated by analysis of the moveout (delay...


Extracting Meaningful Estimates of Rock Properties from 3-D Anisotropic Velocity Models Derived from Borehole Microseismic

Scott Taylor, Jeremy King, Ben Schaeffer, Todd Hibbitts, Lucas McGreaham, Khaled Ghuneim

Unconventional Resources Technology Conference (URTEC)

... 9 Localizations: The next series of images shall contrast the microseismic localizations made within a 1D isotropic velocity model versus a 1D...


Imaging Solutions for Geophysical Challenges in South East Asia (Paper A13)

N. El Kady, Z. Mohd Dom, Y. Prasetyo, M. Bayly, G. Nyein, P. Vasilyev, N. Mat Don Ya

Geological Society of Malaysia (GSM)

... geologically plausible and geophysically reliable velocity models is critical. To match the expectations from the depth imaging outcome, velocity model...


Rock Physics Guided Velocity Modeling and Reverse-Time Migration for Pore Pressure Prediction and Depth Imaging in Complex Areas

Nader C. Duta, Sherman Yang, Yangjun (Kevin) Liu, Lawrence Cho, Jie Cui

Indonesian Petroleum Association

... to accommodate the new velocity model, if needed. We have found that the moveout in the deeper part is insensitive to the anisotropy parameters. An initial...


The Use of Physical Modeling to Resolve Offshore Seismic Problems

B. J. Evans, M. Urosevic

Indonesian Petroleum Association

... direction) versus 2-D CMP gathers often displaying non-hyperbolic moveout due to the strong velocity contrast across the fault in the 2-D case. The smaller...


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

Nader C. Dutta, Sherman Yang, Jianchun Dai

Indonesian Petroleum Association

... dependent velocity curves are generated for each rock type, given the temperature versus depth at a location on the 3D geologic space. An example is given...


Chapter 10-part 3: 3-D Depth Image Interpretation

William L. Abriel, Joseph P. Stefani, Robert D. Shank, David C. Bartel

AAPG Special Volumes

..., the sedimentary signal is very strong, the velocity is well behaved, and the gathers are quite flat prior to stacking. With close inspection, some noise (multiples...



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Machine Calculation of Migration Data

E. Usdin

Oklahoma City Geological Society

.... It is programmed to solve the migration problem for linear increase of velocity with depth. A sample print-out of a dip calculation is shown...


Using Multi-Focusing 3-D Diffraction Imaging to Predict Fracture Swarms in Unconventional Reservoirs

Marianne Rauch-Davies, Alex Berkovitch, Kostya Deev

Unconventional Resources Technology Conference (URTEC)

... on the MultiFocusing moveout time correction, which adequately describes not only reflection but also diffraction events. Optimal summation...


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

Duane Dopkin, Anat Canning, Philip Neri

Petroleum Exploration Society of Australia (PESA)

... to perform a detailed automatic resid ual moveout/velocity analysis in a robust and effective way. . . . .. I ~ I . +Ilk ~ - •I...


Geomechanical Approach to Resolve Severe Velocity Variations and Remove Image Distortions below Rugose Seafloor (Paper A16)

S. Birdus, A. Artyomov, L. Li, S. Xin

Geological Society of Malaysia (GSM)

... on our best a-priori estimation. Then we run PSDM, measure depth-residual moveout and set tomographic inversion to find velocity anomalies that would...


Pre-Stack Imaging: Time or Depth? (Paper 25)

Carl Notfors, Peter Whiting, Geoff Mansfield

Geological Society of Malaysia (GSM)

... they handle lateral velocity variations. The depth algorithm comprehends any lateral velocity variation whereas the time algorithm assumes local...


Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods

Allan T. Long, R. C. Anderson

AAPG Special Volumes

...Amplitude Versus Offset (AVO) Analysis: Part 7. Geophysical Methods Allan T. Long, R. C. Anderson 1992 398 400 ME 10: Development Geology Reference...


Impact of Pre-Stack Depth Migration on the Anama Prospect, Papuan Foreland Basin

K. Bradey

Papua New Guinea (PNG) Petroleum Convention Proceedings

... throughout the Tertiary carbonates, hindering accurate determination of a suitable velocity field. Furthermore, stacking velocities are affected by raypath...


Appendix A: Considerations for Optimum 3-D Survey Design, Acquisition and Processing

R. Malcolm Lansley

AAPG Special Volumes

... gradual such that the normal moveout for the traces to be included in the stack is hyperbolic. Where the velocity field changes too rapidly, and non...


EXTENDED ABSTRACT: Applications of Wave Imaging Technologies to Improve Deep Gulf Prospecting

Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez

GCAGS Transactions

... error to update the migration velocity model in a highly dense fashion. In complex geology, an angle gather may not have recognizable residual moveout...


Seismic Reflections from a Lau Basin Magma Chamber

Janet L. Morton, Norman H. Sleep

Circum Pacific Council Publications

... moveout correction and the migration operations used a velocity function that varied vertically and l a t e r ­ ally. Because the data set contains few...


Geophysical Study of a Magma Chamber Near Mussau Island, Papua New Guinea

S. V. Dadisman, M. S. Marlow

Circum Pacific Council Publications

... migration, deconvolution, normal moveout (NMO) correction, common depth point (CDP) stacking, and bandpass filtering. Shot gathers and frequency spectra...


Basic Seismic Processing: Part 7. Geophysical Methods

Peter M. Duncan

AAPG Special Volumes

... (moveout) at each station can be predicted. Conversely, knowing the arrival time difference, the velocity the sound traveled can be determined under...


Three-Dimensional Depth Imaging of Seismic Data to Help Delineate Petroleum Reservoirs in the Williston Basin

Alvin K. Benson

Williston Basin Symposium

... by rapid lateral velocity changes, velocity pull-up, etc. and (b) the necessity of using a depth migration process versus time migration plus...


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