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The AAPG/Datapages Combined Publications Database
Showing 193 Results. Searched 200,293 documents.
Seismic Exploration Using Shear Waves
R. Garotta
Indonesian Petroleum Association
... Velocity These seismic and resistivity logs show good homogeneity of the layer between 1.2 and 1.45 km depth. Thus, these limits have been chosen...
1978
Abstract: Computing Gridded Traveltimes from the Random Locations of Three Known Points; #90211 (2015)
John Bancroft and Xiang Du
Search and Discovery.com
... [email protected] and Xiang Du University of Calgary, Calgary, Alberta, Canada Abstract Gridded traveltimes are an integral part of Kirc hhoff depth...
2015
Imaging Beneath Gas - A Prestack Depth Migration Case Study (Paper 34)
Osman Khan, Uwe Klein-Helmkamp, Peter Whiting, Tim Chapman
Geological Society of Malaysia (GSM)
... to comprehend local lateral velocity variations, and interpretation of seismic data in the depth domain. This paper presents a case study from offshore...
2003
Abstract: Prestack Signal Enhancement by Non-hyperbolic MultiFocusing; #90187 (2014)
Evgeny Landa, Alex Berkovitch, and Kostya Deev
Search and Discovery.com
... of the enhanced gathers for the true velocity model. Figure 4a shows the PSDM result using the original gathers. Figure 4b is a depth section obtained from...
2014
Wide-angle AVO-inversion using constant P-traces: AVP-inversion
Dennis Cooke
International Meeting for Applied Geoscience and Energy (IMAGE)
... where a high-quality imaging velocity comes from FWI. For time or depth migrations, is possible to avoid the above high-angle data error by not using...
2022
CRS-Stack and NIP-Wave Tomography Implemented to the SH-Wave Reflection Seismic Data for Shallow Hydrocarbon Prospecting (Paper P30)
M. R. Sule, A. A. Valencia, A. Hendriyana, U. Polom, C. M. Krawczyk
Geological Society of Malaysia (GSM)
..., and radius of curvature of NIP wavefront, RNIP), are then used Implementation of partial CRS-stack method as input data for velocity-depth determination...
2012
erformance of Seismic Arrays in the Presence of Weathering Layer Variations, #41841 (2016).
Jubran Akram, Abdullatif A. Al-Shuhail
Search and Discovery.com
... of the plane wavefront, Vw is the weathering layer velocity, b is the channel depth, and β is the angle of the line connecting the intersection point...
2016
3D model-building technique by fusing near surface and deep structure and its applications
Luo Kaiyun, Yang Jian, Ma Lan, Men Zhe, Long Bo
International Meeting for Applied Geoscience and Energy (IMAGE)
...., L. Guofa, Z. Xinyu, T. Naxin, and Z. Tongli, 2014, Pre-stack depth migration velocity model-building method analysis: Petroleum Geophysical...
2024
Geometric mode decomposition method for diffraction separation
Peng Lin, Suping Peng, Yang Xiang, Chuangjian Li, Xiaoqin Cui
International Meeting for Applied Geoscience and Energy (IMAGE)
... can effectively represent reflections with directional and linear geometric features by adaptively decomposing seismic data as a combination...
2022
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
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
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
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
Seismic first arrival tomography for top salt velocity update: A case study in the Santos Basin, Brazil
Paulo H. B. Alves, Marco Cetale, Roger M. Moreira, Sérgio L. E. F. da Silva, Jorge Lopez
International Meeting for Applied Geoscience and Energy (IMAGE)
... alleviate depth-velocity ambiguity compared to conventional two-way time tomography. Conversely, Zelt and Barton (1998) underscore the importance...
2024
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
Envelope full-waveform inversion of marine seismic data
Kai Xiong, David Lumley, Wei Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
... velocity (Vp) with 2D acoustic FWI and IEI. Figure 3a shows the initial velocity model obtained from migration velocity analysis (MVA). The shot position...
2022
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
Microseismic imaging with three-component borehole sensors
Jakob B. U. Haldorsen
International Meeting for Applied Geoscience and Energy (IMAGE)
... microseismicity. WAVEFIELD DECOMPOSITION Consider a function a(tn, xm ), measured at times tn = (n−1)∆t, by a linear array of M sensors at regularly spaced...
2022
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
An immersed boundary topography approach for TTI acoustic propagation
Edward Caunt, Rhodri Nelson, Tim MacArthur, Fabio Luporini, Gerard Gorman
International Meeting for Applied Geoscience and Energy (IMAGE)
... H1 . (5) Velocity parameters c pn and c px are P-wave velocities as determined by normal move-out and in the plane of isotropy respectively, e and d...
2024
Seismic diffractions separation and imaging based on convolutional neural network
Jiaxing Sun, Jidong Yang, Zhenchun Li, Jianping Huang, Jie Xu
International Meeting for Applied Geoscience and Energy (IMAGE)
... using one pass of seismic modeling and migration for velocity models with and without artificial scatterers. Then, a simplified end-to-end CNN...
2022