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Showing 28,166 Results. Searched 200,357 documents.
Pre-Stack Imaging: Time or Depth? (Paper 25)
Carl Notfors, Peter Whiting, Geoff Mansfield
Geological Society of Malaysia (GSM)
... by a hypothetical point reflector (a continuous reflection horizon can be equivalently viewed as a collection of point reflectors via Huygen's principle...
2000
Gemini: A fully operational broadband source for model building and imaging
Carsten Udengaard, David Brookes, Hector Flores
International Meeting for Applied Geoscience and Energy (IMAGE)
... as direct arrival and diving wave energy can be clearly observed. From the raw data in the short offset window higher frequency reflection data can...
2023
Field Technique Design for Seismic Reflection Exploration
L. R. Denham
Dallas Geological Society
... of a reflection at the mute time (Fig. 9). If the offset is too large, the nominal multiplicity is not recorded for the most important reflection...
1982
VSP: Lessons from Numerical Simulation
M. Suprajitno, S. A. Greenhalgh
Indonesian Petroleum Association
... is a spherical wave simulation, for a point source offset from the well-head. The model comprises three layers. At the boundary between layer 1 and 2 (interface...
1985
Shallow Seismic Reflection Survey by Using Accelerated Weight Drop as Seismic Source
Alfian Alfian, Rachmat Sule, Awali Priyono, Masami Hato, Takao Aizawa, Alphius Dwi Guntara
Indonesian Petroleum Association
... longer offset on Line-2 caused the domination surface wave reduce signifcantly so that the S/N ratio increased. More over, the reflection from...
2016
The Fabric, or Internal Structure, of Rocks The Patterns of Anisotropy; #42188 (2018)
Heloise B. Lynn
Search and Discovery.com
... variation by source-receiver azimuth (a wobble, red arrow). The data are sorted first by offset group, then by azimuth within each offset group...
2018
Abstract: Structurally-Consistent Interval Velocity Variation with Azimuth; #90187 (2014)
Darren Schmidt, Alicia Veronesi, Chris Davison, and Jeff Durand
Search and Discovery.com
... be observed on P-wave seismic data. When the data are sorted into Common-Offset, Common-Azimuth (COCA) gathers, a characteristic sinusoidal reflection time...
2014
Chapter Five: Reservoir Identification
Alistair R. Brown
AAPG Special Volumes
.... Figure 5-48. Common-depth-point gathers corrected for moveout showing variation of amplitude with offset for several horizons. The application...
2011
Technical Article: Finding Subtle Traps with Seismic: Interpretative Criteria Clarified
A. Easton Wren
Petroleum Exploration Society of Australia (PESA)
... velocities and, equivalently, Poisson's ratios fm the magnitude of the reflection coefficient at offset. There is a simple relationship between the three...
1986
Abstract: 3-D Design with DMO Modelling, by D. L. Connelly and J. M. Galbraith; #90951 (1996).
Search and Discovery.com
1996
SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Summary and Conclusions
Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver
AAPG Special Volumes
.... The event labeled 'Refl.' is a reflection from rocks at about 5-6 km. End_Page 23------------------------- Figure 4B.--Individual vibrator point record...
1983
Principles of AVO Crossplotting [Abstract]
John P. Castagna, Herbert W. Swan
Oklahoma City Geological Society
... "AVO anomalies" may show increasing or decreasing amplitude variation with offset. Conversely, brine-saturated "background" rocks may show increasing...
1997
Abstract: Principles of AVO Crossplotting, by J. P. Castagna and H. W. Swan; #90944 (1997).
Search and Discovery.com
1997
Seismic Lithology (AVO) Interpretation at the Badak and Nilam Fields in the Sanga Sanga Block, Kalimantan
William C. Ade, Ian T. McMahon, Wahyudin Suwarlan
Indonesian Petroleum Association
... were "tracked" on each offset plane or line. For each track an amplitude variation with offset time slice could be produced by intersecting the track...
1988
Seismic Processing in the Papua New Guinea Fold Belt - Recent Experience
N. J. Fisher, F. R. Nicholson
Papua New Guinea (PNG) Petroleum Convention Proceedings
... alignment of likely reflection energy on the far offsets close to the first arrivals. In fact, because the near offset first arrivals die out at Station...
2000
The Role of Horizontal Seismic Sections in Stratigraphic Interpretation: Chapter 3
Alistair R. Brown
AAPG Special Volumes
... different offsets or groups of offsets for one common depth point. Figure 8 shows a horizon offset section in which the variation in amplitude with offset...
1985
Adaptive regularization parameter estimation in image domain least-squares migration
Shen Sheng, Huazhong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... with Gaussian-type reflection coefficients as the target. The PSF updates of selected underground specific point (black box in Figure 2a) are shown in Figures...
2024
Abstract: An Investigation of Seismic Amplitude versus Offset (AVO), Computer Modelling and Field Data from the Kaimiro Field, Onshore Taranaki
Alex McAlpine, Mick Micenko, Derek Woodward, Jonathon Ravens
Petroleum Exploration Society of Australia (PESA)
... of the amp I itude variation with offset was therefore undertaken. Rock velocity data and fluid property data from the Kaimiro Field were used to create one...
1997
Reveal The Velocity Anomalies in Complex Overburden and Enhanced The Imaging through Shallow Gas: A Case Study in SisiNubi Mahakam, Indonesia
Annas Astuti, Yohanes Kristomo, Bee Jik Lim, Ginanjar Satria, Natalia Anggriani
Indonesian Petroleum Association
... and a high level of uncertainty in the amplitude variation with offset analysis. In the area with ultra-shallow-water depths (ranging from 60 to 100m...
2019
Cascaded full-waveform inversions to resolve Mesozoic structures in shallow-water Gulf of Mexico with limited-offset data
Wei Kang, Christoph Koeninger, Miguel Acosta Perez, Josue Jurado Ramirez, Imran Nagir, Denes Vigh, Silvino Dominguez Garcia, Alfredo Vazquez Cantu, Luis Arturo Vega, Marco Antonio Mayorga
International Meeting for Applied Geoscience and Energy (IMAGE)
...Cascaded full-waveform inversions to resolve Mesozoic structures in shallow-water Gulf of Mexico with limited-offset data Wei Kang, Christoph...
2022
Application OF AVO Seismofacies Technique to Detect Undrained Prospects in Handil Shallow and Upper Zones, Mahakam Delta, East Kalimantan
Sung Yuh, Ahmad Anshariy, Savanto Ariawan, Hilfan Khairy, Cepi M. Adam
Indonesian Petroleum Association
... areas based on the seismic data is getting more and more important. Amplitude variation with offset techniques are well-known direct hydrocarbon...
2015
Seismic Processing Applications on a Personal Computer
Geophysical Service (Malaysia) Sdn. Bhd.
Geological Society of Malaysia (GSM)
... at or near the surface and a receiver down the borehole. The source may be at or close to the wellhead (zero-offset VSPS). This would create reflection...
1989
Marine Multicomponent Seismic – The New Issues in the Developing Revolution
Jason Robinson
Indonesian Petroleum Association
..., A., 1988. Common reflection point data stacking technique for converted wave. Geophysical Prospecting, v. 36, pp. 671-688. Thomsen, L., 2001. Seismic...
2002
Abstract: A Study of PS Wave AVO; #90255 (2017)
Young-Fo Chang, Jai-Wei Liu
Search and Discovery.com
... University Abstract Amplitude variation with offset (AVO) is a technique used in petroleum exploration to estimate the lithology and pore fluids...
2017
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...
1992