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The AAPG/Datapages Combined Publications Database
Showing 164 Results. Searched 195,688 documents.
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... interpretation. The exact acoustic velocity at which the wave moves from one point to another depends on the physical properties of the medium. For constant...
2019
II. Information Content and Resolution Potential of Seismic Data.
Norman S. Neidell
AAPG Special Volumes
... In the preceding figure we see that in time the propagation wavefront will strike the entire boundary and not just a single point. According to Huygen's...
1979
Getting Something for Nothing: Noise Attenuation in an Aliased World; #41291 (2014)
David C. Henley
Search and Discovery.com
... for improving coherent noise attenuation of a single aliased noise is de-aliasing by application of constant-velocity linear moveout (LMO) prior to estimating...
2014
Acoustic modelling with elastic AVA effects
Robin P. Fletcher, James Hobro, James Rickett
International Meeting for Applied Geoscience and Energy (IMAGE)
... acoustic FWI to build the pressure wave velocity model using diving wave long offset data and then fix the propagation velocity, restrict the offsets...
2023
ABSTRACT: Optimising Seismic Acquisition Through Combined Ray Tracing and Structural Modelling; #90007 (2002)
Stuart C. Bland, Michael C. A. Goodwin
Search and Discovery.com
... are recorded and the optimum survey orientation is chosen. In compressional tectonic settings where wavefront distortion typically occurs at layer...
2002
Geothermal exploration at Kijiyama KJ-5 hot geothermal borehole in Northeastern Japan using DTS and DAS
Junzo Kasahara, Yoko Hasada, Masaru Suzuki, Tomohiro Takahashi, Hitoshi Mikada, Hiroshi Ohnuma, Yoshihiro Fujise
International Meeting for Applied Geoscience and Energy (IMAGE)
... is parallel to the S wavefront, i.e., perpendicular to their propagation direction, the S wave velocity may be slower, and Vp/Vs may exceed 1.75 if fluid...
2023
Beam Migration for Imaging of Complex Structures
Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki
Indonesian Petroleum Association
... and its associated migration properties enables a very limited wavefront Kirchhoff migration contribution to a 3D migrated depth volume (x,y,z...
2009
VSP: Lessons from Numerical Simulation
M. Suprajitno, S. A. Greenhalgh
Indonesian Petroleum Association
.... The upgoing waves (reflections) are characterised by a negative apparent velocity i.e. time increases with decreasing depth. Note how the upgoing primary...
1985
ABSTRACT: Multiple suppression by the CRS technique; #90051 (2006)
Juergen Pruessmann, Martin Tygel, Fernando Gamboa, Radu Coman
Search and Discovery.com
... from a subsurface model, or from seismic data attributes. Such information is required in the case of land data, where high -velocity rocks may...
Unknown
Improve Kirchhoff depth imaging using full-wave-equation traveltimes
Yongzhong Wang, Yang He, Alex Yeh, Faqi Liu, Bin Wang, Carlos Caldern
International Meeting for Applied Geoscience and Energy (IMAGE)
... Full waveform inversion (FWI) has become the main workhorse to derive highly accurate velocity models and is applied in nearly every depth imaging...
2023
Permafrost Studies in the Norman Wells Region, Northwest Territories
P. J. Kurfurst, R. M. Isaacs, J. A. Hunter, W. J. Scott
CSPG Special Publications
... for constructing uphole wavefront diagrams. Since a frozen active layer with a high velocity overlying unfrozen material with a low velocity constitutes...
1973
Stratigraphic and Structural Interpretations Using Diffraction Seismograms
Richard K. Snavely , A.K.M. Sarwar
GCAGS Transactions
...). The model extends from the surface to a depth of 8000 ft and includes twenty horizons. The velocity values above the first horizon are based on only one...
1988
Integrated 3D Seismic Data Modeling and Processing Methodology for Structural Model Analysis: Case Study
T. Salinas
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... (PSDM) that requires perform a careful interpretation in depth as the seismic velocity behavior is modeled. The availability of this structural...
2006
Abstract: Accurate Conversion between Offset Image Gathers and Angle Image Gathers, by Jianming Sheng and Chengbin Peng; #90105 (2010)
Search and Discovery.com
2010
Constraints on Eolian Grain Flow Dynamics Through Laboratory Experiments on Sand Slopes
Richard R. McDonald , Robert S. Anderson
Journal of Sedimentary Research (SEPM)
..., and then steadily decreased to 10 cm/s towards the tail of the flow. The longitudinal velocity gradients created considerable longitudinal strain rates...
1996
Common Reflection Surface (CRS) Stack: Limitations and Opportunities for High-Resolution Seismic Imaging; Real Data Cases
M. S. Jaya, E. A. Sentani, Yendri, Widjonarko, D. Santoso
Indonesian Petroleum Association
... wavefield attribute sections that are useful in further processing such as tomographic velocity model inversion and depth migration processing...
2007
Multiple Suppression by the CRS Technique
Search and Discovery.com
N/A
Abstract: Seismic Data Reconstruction Using the Nonlinear Beamforming Framework; #91204 (2023)
Yimin Sun and Quentin Hirsch
Search and Discovery.com
... of them. Every missing data point in the spatial dimension on a wavefront is reconstructed via a weighted summation of a linear interpolation...
2023
Know Before You Go!
Lars Zühlsdorff, Trond Haugland
GEO ExPro Magazine
... as determined from seismic velocity analysis, well logs, check shots, or even best guesses. On the modeling side, a technique called wavefront construction...
2021
Novel Land and Marine Solutions Including Time-Lapse Using High Resolution Multi-Transient EM
Folke Engelmark
Indonesian Petroleum Association
... sampling in relation to target depth, and to achieve the necessary S/N at target levela in the shortest possible time given a particular source...
2008
2.3 Detached Sediments in Extensional Provinces: 2.3.2 Salt Tectonics: Salt Diapirs--East Texas Basin
M. Engleman and D. A. Kemmer
AAPG Special Volumes
.... Depth-converted sections are constructed utilizing velocity surveys that measure the travel-time of a seismic wavefront to depth-selected checkshots...
1983
Abstract: Successful Imaging Below Salt: Technique and 2 Case Histories, by R. Marschall, H.-J. Zoch, C. Henke, M. Krieger, and F. Kockel; #90923 (1999)
Search and Discovery.com
1999
Inferring Stratigraphy from Seismic Data
R. E. Sheriff
AAPG Bulletin
... decreases with depth, and hence resolution deteriorates with depth. At 10,000-15,000-ft (3,000-4,500 m) depth, velocity may be in the 12,000-20,000 ft/sec...
1976
Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)
John C. Bancroft and Thais Guirigay
Search and Discovery.com
... with the synthetic seismograms. 4000 Velocity (m/s) 3500 Vs-int-Log(z) Vs-int-Estimated(z) 3000 2500 2000 1500 1000 500 0 1000 2000 3000 4000 Depth (m) 5000...
2015