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The AAPG/Datapages Combined Publications Database
Showing 33,058 Results. Searched 195,372 documents.
Structure Interpretation Problems of a Lower Miocene Reef Associated with a Shallow Low Velocity Anomaly, North Sumatra
Peter Walker, Masrizal Maas, Michael D. Burnaman
Indonesian Petroleum Association
... shallow depth of the Peusangan-XL reef. The stacking problem was solved and the far offset amplitudes exploited. The additional information...
1986
Calculating Sandstone-Shale Ratios from Growth Normal Fault Dips on Seismic Profiles
R. E. Bischke , J. Suppe
GCAGS Transactions
... possible utilizing our methods. Therefore we have utilized stacking velocities in our depth conversion calculations, which typically contain errors of 10...
1990
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
... for the correct stacking of common-depth-point (CDP) data and the production of true-depth sections. The seismic reflection data from the Tonga platform suggested...
1985
Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data
Paul L. Stoffa
Circum Pacific Council Publications
... to dip, although this is usually a minor effect when using Common Midpoint data (Diebold and Stoffa, 1981). Another difficulty occurs when velocity...
1989
Application of Seismography to Geological Problems
Eugene McDermott
AAPG Bulletin
... alluvial sediments the velocity increases with depth as a result of overburdening. Such a gradual change of velocity has no practical value...
1931
Investigation of DMO Algorithms during Test-Line Processing: Some Recommendations
Ng Tong San, Mohd. Hashim Abas, Leong Lap Sau
Geological Society of Malaysia (GSM)
... constrained velocity trend is evident in the velocity spectrum after DMO. Figures 2(g) and 2(h) illustrate this effect and reinforces the stacking...
1996
Analytical Approach for Multivariate Exploration Planning via Secondary Migration Modelling
Amin Shokrollahi, Sara Borazjani, Syeda Sara Mobasher, Ulrike Schacht, Khalid Amrouch, Pavel Bedrikovetsky
Australian Petroleum Production & Exploration Association (APPEA) Journal
... presents the effect of water velocity below the migrating hydrocarbon column on the initial and rear fronts’ trajectories. Initial front velocity...
2023
Influence of Lithology and Neogene Uplift on Seismic Velocities in Denmark: Implications for Depth Conversion of Maps
Peter Japsen
AAPG Bulletin
...-depth function for a formation. The variation of the velocity anomaly of the lowermost Jurassic claystones in northern Denmark is interpreted...
1993
Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia
Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith
AAPG Bulletin
... the effect of carbonate content at shallow depth. Virtually all wells with shallow sonic velocity data show a marked change in gradient at around 300-500 m...
2002
Reservoir Description by Interferometric Imaging of VSP Data in Transition Zones
Thomas Radford, Martin Karrenbach, Ferry Yustiana, Willi Brianno, Dhea Wachju
Indonesian Petroleum Association
... aspects, we focused on the value of information obtained by using advanced processing flows, such as a 3D depth-tied velocity model construction using...
2013
Applications of Pre-Stack Migration; Richard Postma; Search and Discovery Article #40029 (2001)
Search and Discovery.com
2001
Dipmeter Validity in Deviated Bore Holes: ABSTRACT
Don D. Fitzgerald, J. C. Theriot, P. L. York
AAPG Bulletin
... in the final dipmeter results such that the formation dip magnitude will be erroneous and even the dip direction can be wrong. Errors in relative...
1980
Depth Conversion in the Llanos Basin: Workflow to Reduce Fault Shadow Effect.
Andrew Chermak, Gabriel Veloza Fajardo, Juan Carlos Ramón
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... velocity (Vavg) with depth is to introduce a kink in an otherwise smoothly varying curve as shown in Fig. 3. The effect of this anomalous zone on the seismic...
2009
Refraction Statics, A Comparison Among Processing Contractors
Bambang Sudewo
Indonesian Petroleum Association
... that sometimes the structural relief at depth cannot be easily separated from the near surface effect. Refraction statics on the other hand, utilizes...
1985
The Seismic and Geological Definition of a Reef
R. A. Maxwell, W. Thomsen, F. Wilson
Oklahoma City Geological Society
... VELOCITY CURVES FROM DYNAMIC PLOTS Figure 7. INTERVAL VELOCITY COMPARISON End_Page 270------------------------ Figure 8. DEPTH SECTION Figure 9...
1973
True Amplitude Preserved Multi-Azimuth Pre-Stack Depth Migration for Structural and Reservoir Characterization (Sisi-Nubi Field, Indonesia)
M. Baturin, F. Bertini, J. Bonnafé, A. Riou, S. Birdus, Y. Yin
Indonesian Petroleum Association
... considered to be important for the model (Fig. 7). The initial depth velocity model was built from a Vrms field available from previous time processing...
2011
A Practical Review of Migration Issues and Solutions; #40723 (2011)
Ian F. Jones
Search and Discovery.com
..., the method of velocity model building must be tailored to the type of depth migration algorithm we intend to use. We nowadays commonly have available...
2011
Lithology Prediction by Extrapolating Well Data
Brian Barley, Dean Chergotis, Mai Wilson, Susan Young
Indonesian Petroleum Association
.... For sandstone, limestone, shale and coal, zonal average's of velocity, density and acoustic impedance in ten wells were crossplotted against maximum burial depth...
1992
Current Trends in Geophysics
H. E. Stommel, J. M. Graul
Indonesian Petroleum Association
... data are first separately migrated and then followed by a conventional stack. The effect is elimination of dip dependent velocity prior to stacking...
1978
All that wobbles isnt necessarily azimuthal anisotropy
Helen Debenham, Jennifer Badry, Mohamed Megebry
Petroleum Exploration Society of Australia (PESA)
... rather than the depth of present-day burial. Hence there can be large velocity contrasts across these faults. Figure 4 shows the two-way-time (TWT...
2019
Australian Insights into Streamer Technology Innovations
Andrew Long
Petroleum Exploration Society of Australia (PESA)
..., - 20 -10 40 ;/~1\ v a m Depth - - 15m Depth Frequency (Hz) 60 80 100 I ~~ \I / I \ \V \ I 120 ....... 20 40 Particle Velocity...
2009
Wide-Angle Seismic-Reflection and -Refraction Data from the Solomon Islands
A. K. Cooper, R. A. Wood
Circum Pacific Council Publications
... cities, the refractors are weak and often wavy, which indicates either lateral or vertical velocity gradients, or geologic structure at great depth. Where...
1986
Dipmeters: Part 4. Wireline Methods
Joseph F. Goetz
AAPG Special Volumes
... somewhat with the computation technique employed. The fact is, at any one depth, more than one true dip exists; which dip is reported is a matter...
1992
Kurau: An Example of the Low-Relief Structural Play in the Malacca Strait Psc, Sumatra, Indonesia.
Sunu H. Praptono, Rovicky Dwiputro, Ian M. Longley, Richard W. Ward
Indonesian Petroleum Association
... does not. An examination of the time-depth curves at AC-4 shows that the slightly faster average velocity to the top Lower Sihapas Formation...
1991
ABSTRACT: Reflection Tomography for Validation of Subtle Structures: A Case History from Southern Tunisia; #90051 (2006)
Harald Granser, Oezsen Refik
Search and Discovery.com
... static problems due to sanddunes at surface with low velocities but also by uncertainties in depth-conversion because of velocity variations...
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