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The AAPG/Datapages Combined Publications Database
Showing 73,077 Results. Searched 200,293 documents.
Assessment on the Serviceability of Monopod Platforms in Java Sea Due to Wave Excitation
Gde Pradnyana
Southeast Asia Petroleum Exploration Society (SEAPEX)
... using the Inverse Fast Fourier Transformation. As we will be analyzing the response of the monopod in time domain, the non-linear drag component, i.e....
1996
Pore-Pressure Prediction in the Permian Basin Using Seismic Prestack Inversion
Colin Sayers, Lennert den Boer
Unconventional Resources Technology Conference (URTEC)
.... In such reservoirs, changes in lithology occur over vertical depth intervals too small to be resolved using seismic velocities derived by means of normal moveout...
2019
Velocity model building for pressure and converted wave imaging using surface-DAS data: A North Sea case study
M. ElAttar, H. Malak, A. Cooke, O. Lewis, C. Thorgersen
International Meeting for Applied Geoscience and Energy (IMAGE)
...Velocity model building for pressure and converted wave imaging using surface-DAS data: A North Sea case study M. ElAttar, H. Malak, A. Cooke, O...
2024
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)
... rounded velocity profiles as concentrations increase and high-density layers cover larger parts of the flow depth. Fig. 6F shows a more pronounced decrease...
2013
An Analysis of Factors Controlling Deviations in Hydraulic Equivalence in Some Modern Sands
Richard Lowright, E. G. Williams, Frank Dachille
Journal of Sedimentary Research (SEPM)
... was obtained from the larger sample by using an Otto microsplit. Settling velocity distributions for samples 1-29 were obtained using the equipment...
1972
Serang Field – Discovery Within a Seismic "Fault Shadow"
Tom Clark, Mike Turk, Joewono Hadiwijoto, Yoseph Partono
Indonesian Petroleum Association
... closure superimposed. This map was converted to depth using a single check-shot function from SA-10, a well drilled on the down-thrown side of the fault...
2000
Determination of Velocity Model by Using NIP-Wave Tomographic Inversion: Application to Synthetic and Real Data
A. Hendriyana, R. Sule, Y. Akbar, L.A. Poerwaka, T.A. Sanny, Sardjito, Waluyo, Adriansyah
Indonesian Petroleum Association
... in after 13 iterations. Figure 7 - smooth, isotropic and vary laterally velocity-depth model [m/s] determined from CRS wavefield attributes by using NIP...
2009
Importance of Good Time to Depth Conversion Method to Reduce GRV Uncertainties of Producing Fields in the South Sumatra Block, #20494 (2020).
Danar Yudhatama, Aurora Juniarti, Erwin Muhamad Indra Kusumah, Yudi Yanto,
Search and Discovery.com
... structure map that has a similar pattern with the time structure map. Time to depth conversion method that honors the lateral velocity variation is using...
2020
Subsurface Formation Pressure Gradient vs. Slope: Perception and Pitfalls
Selim S. Shaker
GCAGS Transactions
... sandy facies, pore pressure measurement follows a linear gradient in most of the fluids and gases. These measurements increase with depth in linear...
2024
Subsurface temperature from seismic reflections: Application to the post-breakup sequence offshore Namibia
Arka Dyuti Sarkar and Mads Huuse
AAPG Bulletin
... depth because of the lower interval velocity selected, which in turn would result in a lower temperature for the BSR using the phase relationship...
2023
Consistent Structural Model Simulations for Volumetric Uncertainty Study
M. A. Lecour, P. Thore, R. Cognot
AAPG Special Volumes
... a correct velocity model, which is commonly not available in most complex structures. More than this, a simple stretching (depth = velocity time...
2006
Using Traditional Methods to Predict Pore Pressure in Devonian Black Shale Basins of North East British Columbia
Sam Green, Joel Loeffler, Shona Clarke, David Thurston
Unconventional Resources Technology Conference (URTEC)
... of the PRT in velocity-depth space is a function of the measured pressure, to which the trend is calibrated, over the zone(s) of interest. The trend...
2018
MFF net: A multiscale feature fusion network for electromagnetic and seismic joint inversion
Yonghao Wang, Zhuo Jia, Yinshuo Li, Wenkai Lu
International Meeting for Applied Geoscience and Energy (IMAGE)
... obtained through NLCG method. Examples Figure 4 Inputs of the U-Net encoder. (a) Initial linear velocity model. (b) RTM result using the initial...
2023
Velocity estimation via model order reduction
Alexander V. Mamonov, Liliana Borcea, Josselin Garnier, Jrn Zimmerling
International Meeting for Applied Geoscience and Energy (IMAGE)
...-dimensional parametrizations of the unknown velocity the ROM misfit function is close to convex. The proposed approach consistently outperforms...
2022
Multidomain simultaneous joint inversion for near-surface characterization A case study from onshore US
Nate Johnson, Ali Ahmed Hussein Mohamed, Zhanna Jackson, Seth Riseman, Kevin Douglas
International Meeting for Applied Geoscience and Energy (IMAGE)
... with linear moveout applied; shot gather with surface waves highlighted in green (b). A linking function relating the inverted Vp and Vs fields...
2023
Semi-global multiparameter FWI using public cloud HPC
Henry A. Debens, David Knodel, Fabio Mancini, Darryl Harris, Mike Warner, Adrian Umpleby
International Meeting for Applied Geoscience and Energy (IMAGE)
... FWI are introduced in this work: • Scaling the initial velocity model for each candidate solution using its associated anisotropy model, which acts...
2022
AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods
Alan R. Huffman
AAPG Special Volumes
... and methods has historically been done using very simple models and overly simplistic estimates of the Earth’s velocity field. The methods commonly...
2001
Machine Learning Application for Shear Velocity Prediction in Ahnet Basin, Algeria; #42584 (2023)
Abdeldjalil Latrach, Nassim Bouabdallah, and Aimene Aihar
Search and Discovery.com
...Machine Learning Application for Shear Velocity Prediction in Ahnet Basin, Algeria; #42584 (2023) Abdeldjalil Latrach, Nassim Bouabdallah, and Aimene...
2023
Transformation of Resistivity to Pseudovelocity Logs: GEOLOGIC NOTE
Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs
AAPG Bulletin
... only a few selected points are used to plot the curve. As an experiment, a scale function was constructed from the Brown well by using the average R...
1976
Microseismic Event Location Using Multiple Arrivals: Demonstration of Uncertainty Reduction
Zhishuai Zhang, James W. Rector, Michael J. Nava
Unconventional Resources Technology Conference (URTEC)
... and velocity model calibration. Validation of the developed method was performed on perforation shots and shows that using head waves instead of polarization can...
2015
Fault Seal Analysis: Constraining Fault Seal Risk Using Seismic Velocities, #41789 (2016).
Toby Colson
Search and Discovery.com
... reactivation. The Coulomb Failure Function describes this critical condition useful in assessing fault risk. This study investigated of the robustness of using...
2016
Deep-learning application of salt geometry detection in deep water Brazil
Ruichao Ye, Anatoly Baumstein, Kirk A. Wagenvelt, Erik R. Neumann
International Meeting for Applied Geoscience and Energy (IMAGE)
... activation function. (Demonstration using Gulf of Mexico subsalt numerical model, see https://wiki.seg.org/wiki/SEAM.) correlated, we introduce two...
2022
Use of Horizontal Seismic Sections to Identify Subtle Traps
Alistair R. Brown, Robert J. Graebner, C. G. Dahm
AAPG Special Volumes
... Seiscrop sections of Figure 16. Velocity maximum on the G-LOG function at 4,100 ft (1,250 m) is the high velocity expression of the inferred channel seen...
1982
An Automated Grain-shape Classifier
William H. Glezen, John C. Ludwick
Journal of Sedimentary Research (SEPM)
... is to measure some physical grain response that is a function of shape, for example, the descent velocity of a particle on an inclined surface or the distance...
1963
Streamlining subsurface insights: Single extrapolation for holistic Green's function generation
Hongwei Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
.... (a) is the real part of the MLWEM for frequency 20Hz at depth level 2400m; (b) is the velocity model; (c) is the Green’s function from surface location...
2024