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The AAPG/Datapages Combined Publications Database
Showing 17,622 Results. Searched 195,387 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
... velocity break at top reef level. The large break and relatively shallow depths involved cause a sharp increase in stacking velocity across the reef...
1986
Petrophysical Classification of Siliciclastics for Lithology and Porosity Prediction from Seismic Velocities (1)
LEV VERNIK and AMOS NUR
AAPG Bulletin
... at comparable porosities to rocks in the first two groups. The compressional velocity-porosity relation for each of these groups is found to be linear...
1992
Structural and Tectonic Evolution of Oceanic Crust within the Jurassic Quiet Zone, Offshore Morocco: Chapter 14: African and Mediterranean Margins
James S. Holik, Philip D. Rabinowitz
AAPG Special Volumes
... analysis were used in deriving continuous velocity functions in the form of least-square linear regressions (Houtz et al., 1968). The velocity functions...
1992
Presentation of a Velocity Mis-Tie
W. B. Robinson
Oklahoma City Geological Society
... the curve) plotted on a linear time scale. In this case, the velocity scale is not linear, but is a reciprocal of time (5.92 feet ÷ ti...
1961
Use of Seismic-Derived Velocities for Stratigraphic Exploration on Land: Seismic Porosity and Direct Gas Detection: Chapter 4
Norman S. Neidell, J. H. Beard, Ernest E. Cook
AAPG Special Volumes
.... Then the next shallowest reflector is treated in similar fashion and so on. Places along the profile where the dashed line (deeper velocity values) rises above...
1985
Experimental Evaluation of a Generalized Suspended-Sediment Transport Theory
Guy Gelfenbaum, J. Dungan Smith
CSPG Special Publications
... in which velocity and suspended-sediment concentrations were measured at various heights above the bed. Flume designs and experimental conditions...
1986
Effects of Differential Cementation on the Sonic Velocities of Upper Cretaceous Skeletal Grainstones (Southeastern Netherlands)
Jeroen A. M. Kenter, Bruce W. Fouke, Marc Reinders
Journal of Sedimentary Research (SEPM)
... the cementation effect on sonic velocity at high porosities. Linear and nonlinear time-average regressions show strong correlation between velocity and porosity...
1997
Concentration-Dependent Flow Stratification In Experimental High-Density Turbidity Currents and Their Relevance To Turbidite Facies Models
Matthieu J.B. Cartigny,, Joris T. Eggenhuisen, Ernst W.M. Hansen, George Postma
Journal of Sedimentary Research (SEPM)
... in the deviating discharge run (C17S09N), where an increase in velocity maximum is compensated by an increase in the height of the maximum velocity above...
2013
Determination and Delineation of Anomalously Pressured Gas Accumulations in the Siberia Area, Washakie Basin, Wyoming
Ronald C. Surdam, Zun Sheng Jiao, Yuri Ganshin, Nicholas G. K. Boyd III
Wyoming Geological Association
... and construction of the velocity field in the Siberia Ridge area (according to the sampling strategy outlined above) and (2) isolation of anomalously slow...
2001
Fast and efficient structure-oriented preconditioning with on-the-fly dip estimation
Rodrigo Felicio Fuck, Lorenzo Casasanta
International Meeting for Applied Geoscience and Energy (IMAGE)
... around the k-th element of the input image — as the solutions to the following regularized linearleast squares problem Above i denotes the element index...
2023
Abstract: Estimation of Group Velocity using Slant Stack Generalized S Transform Based Method; #90174 (2014)
Roohollah Askari, Robert J. Ferguson, and Kristof DeMeersman
Search and Discovery.com
... to the linear propagation of ground roll on surface, the apparent velocity of the ground roll can be estimated by applying the slant stack transform...
2014
Transportation and Deposition: Chapter 1
Robert R. Berg
AAPG Special Volumes
... because of cohesion. b. Increase in current velocity first erodes sand. c. Decrease in current velocity deposits sand according to a linear function...
1978
Delineation of a Thin Sandstone Reservoir Using Seismic Lithologic Modeling in the Taber-Turin Area, Alberta
Tom Guidish and Marc DeBuyl
AAPG Special Volumes
... in errors in velocity estimation. Based on a quantitative study of the above results (DeBuyl and Guidish, 1986) the magnitude of the error...
1987
Deep Structure and Evolution of the Carolina Trough: Rifted Margins: Field Investigations of Margin Structure and Stratigraphy
D. R. Hutchinson, J. A. Grow, K. D. Klitgord, B. A. Swift
AAPG Special Volumes
... of America Bulletin, v. 58, p. 757-819. Harris, L. D., and K. C. Bayer, 1979, Sequential development of the Appalachian orogen above a master...
1982
Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015)
Tianfei Zhu, Yan Yan, and Jon Downton
Search and Discovery.com
...Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015) Tianfei Zhu, Yan Yan, and Jon Downton AAPG Search...
2015
Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf: Reply
Vidar Storvoll, Knut Bjrlykke, Nazmul H. Mondol
AAPG Bulletin
... et al., 2005). Japsen (2006), however, argues that compaction of shales can be represented by a linear velocity-depth trend as a function...
2006
Abstract: Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada; #90171 (2013)
Gilles Bellefleur
Search and Discovery.com
... travel-time data is a non-linear problem since both the velocity of the medium and the ray paths in the medium are unknown. The final solution is typically...
2013
Abstract: Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada; #90171 (2013)
Gilles Bellefleur
Search and Discovery.com
... travel-time data is a non-linear problem since both the velocity of the medium and the ray paths in the medium are unknown. The final solution is typically...
2013
Porosity Mapping Using Seismic Interval Velocities, Natuna L–Structure
D. R. Eyles, J. A. May
Indonesian Petroleum Association
... of linear increase of interval velocity with the calculated thickness of the water-bearing carbonate. This utilized the available well data points...
1984
Time-Depth Modeling in High Pore-Pressure Environment, Offshore East Coast of India; #30463 (2016)
Nidhi Jindal, Ajoy Kumar Biswal, Kumar Hemant Singh
Search and Discovery.com
... tested on four models: a) the linear interval velocity model in depth, b) the linear interval velocity model in time (TWT), c) the average velocity model...
2016
Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)
Emil Blias
Search and Discovery.com
... to estimate shallow velocity structure, (iii) Non-linear horizon based traveltime tomography to improve depth velocity model and (iv) time-dependent velocity...
2015
-- no title --
Ehsan, Athar
Search and Discovery.com
... analyses were carried out to verify the efficiency and accuracy of the technique on Majunga model, complex Marmousi and linear velocity model. EXTENDED...
Unknown
Abstract: 3D Time Domain Full Waveform Inversion Based on Multiscale Adapted Variable Grid Method Case Study Majunga Basin East African Coast; #91204 (2023)
Mukiibi Ssewannyaga Ivan, Jian-Ping Huang, Zi-Ying Wang, Jidong Yang, Jin Keji
Search and Discovery.com
.... Figure: 3 Linear velocity model We extracted a vertical profile from snapshots (Fig.4c) above midway of the model (x=1.50km and y=1.50km...
2023
Application of Seismography to Geological Problems
Eugene McDermott
AAPG Bulletin
... depicted in Figure 2 are not encountered. There is in all cases an increase of velocity with depth, as a result of which the rays are slightly curved...
1931
The Use of Production Logging Surveys to Determine the Injection Profile at the Kenali Asam Waterflood Pilot Project
Victory S. Kirana
Indonesian Petroleum Association
... on production. In modern usage, the above term has come to mean any borehole survey used as an aid to either eliminating or assisting production. Production...
1992