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The AAPG/Datapages Combined Publications Database
Showing 17,690 Results. Searched 200,293 documents.
Converted-Wave Prestack Time Imaging without using P-Wave
Search and Discovery.com
... requires very accurate vertical velocity ratio (γ0). Errors in Vp estimation may be carried over to Vs too. Even though you have very good estimation of P...
2013
The impact of estimated temporal and spatial variability of water layer velocity on the correction of OBS data
Peter Scholtz, Truong Nguyen, Arash Jafar Gandomi
International Meeting for Applied Geoscience and Energy (IMAGE)
... for these errors, while a water velocity model gets updated from an initial uniform estimate to a final time- and depth-dependent version at the node locations...
2023
Velocity Characteristics of the Salt-Bearing Sediments of the Outer Part of the Border Zone of the Peri-Caspian Depression
S. B. Faynitskiy, Ye. G. Skornyakova
Petroleum Geology: A Digest of Russian Literature
...Velocity Characteristics of the Salt-Bearing Sediments of the Outer Part of the Border Zone of the Peri-Caspian Depression S. B. Faynitskiy, Ye. G...
1979
ABSTRACT: Extended Stolt F-K Migration, by Craig Beasley, Walt Lynn, Ken Larner, and Hung V. Nguyen; #91035 (2010)
Search and Discovery.com
2010
Influence of Geological Factors on Longitudinal Seismic Velocities
B. B. Weatherby , L. Y. Faust
AAPG Bulletin
... made of velocity data obtained from fifty wells located in eight states. There is definite evidence to show that the velocity of shale and sandstone...
1935
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
... with a maximum frequency of ~15Hz to correct for relatively small-scale velocity errors and delineate the near-surface velocity contrast that conforms...
2019
An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement
Andy Furniss
Indonesian Petroleum Association
... positioning errors that are left uncorrected by time migration. Significant lateral errors may be observed where there is very little velocity variation...
2000
ABSTRACT: Comparison of an Estimated Shear Wave Model with a Measured Shear Wave Log; #90108 (2010)
Felix Oghenekohwo and George Smith
Search and Discovery.com
... of logging can be fraught with errors that can lead to wrong interpretation. One of such data is the shear wave velocity which in most cases is collected...
2010
ABSTRACT: Comparing of an Estimated Sonic Log with Measured Sonic Log; #90118 (2011)
Felix Oghenekohwo and George Smith
Search and Discovery.com
... of logging can be fraught with errors that can lead to wrong interpretation. One of such data is the shear wave velocity which in most cases...
2011
Model of Near-Surface Velocity, Southern San Joaquin Valley, California, by James G. Ferry; #91024 (1989)
Search and Discovery.com
1989
Abstract: Estimating Static Shifts by Deconvolving Stacking Velocity Profiles, by Turki Z. Al-Rowaili, Abdullatif Al-Shuhail, Abdulaziz S. Al-Aslani, and Gabor Korvin; #90077 (2008)
Search and Discovery.com
2008
Abstract: Non-Hyperbolic Reflection Tomography for Better Imaging and Interpretation, by Zhaobo Meng and Chengbin Peng; #90105 (2010)
Search and Discovery.com
2010
Chapter Ten-part 2: Depth Conversion
Leslie R. Denham, Dave K. Agarwal
AAPG Special Volumes
... over a very limited area, perhaps just around the well where the velocity data were acquired; this method often minimizes local errors in absolute...
2011
Imaging Complex Structures in Colombia Full Wave Equation Migration Approach
Hector A. Alfonso, Luis E. Rojas, Weizhong Wang, Jie Zhang, Oz Yilmaz
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
...-arrival times that accounts for topography, and resolves lateral and vertical velocity variations. The corrections for the near-surface are performed...
2008
Application of time-adaptive FWI on onshore data in Bohai Bay Basin
Wan Xuejuan, Luo Wenshan, Wang Yongming, Gong Ting, Li Daoshan, Chen Yuansheng
International Meeting for Applied Geoscience and Energy (IMAGE)
... initial velocity errors in onshore data, we performed a high pass processing of 5Hz on the forward single shot of the Marmousi model to filter out...
2024
AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction
David W. Bell
AAPG Special Volumes
.... Comparison of depth errors obtained by individually fitting various velocity models to check shots in 12 GOM wells. Statistical fit of data from 3000...
2001
Velocity Logging and Its Geological and Geophysical Applications
H. R. Breck, S. W. Schoellhorn, R. B. Baum
AAPG Bulletin
...Velocity Logging and Its Geological and Geophysical Applications H. R. Breck, S. W. Schoellhorn, R. B. Baum 1957 1667 1682 41 8. (August) In its...
1957
Seismic Array Response in the Presence of Intra-Array Variations in Element Weights, Elevations, and Positions; #42328 (2018)
Ryan Adhi Putra, Abdullatif A. Al-Shuhail
Search and Discovery.com
..., 𝑇𝑇𝑝𝑝 = dominant period, 𝑣𝑣 =velocity. (7) In the end, the wavelet responses with errors were generated by convolving the impulse response with errors...
2018
Time Depth Conversion of a Prospect With Near-Surface Velocity Anomalies Using Stacking Velocites and PSDM Velocities: A Comparison
Tan Boon Hua, Lothar Schulte
Indonesian Petroleum Association
...Time Depth Conversion of a Prospect With Near-Surface Velocity Anomalies Using Stacking Velocites and PSDM Velocities: A Comparison Tan Boon Hua...
2011
A Comparison of the Various Methods of Dip Migration
H. Bruce Mayo
Oklahoma City Geological Society
... the greatest improvement. It must be understood that large velocity changes exist in the subsurface. Errors caused by our inability to completely...
1958
-- no title --
user1
Search and Discovery.com
... to the influence of the shallow velocity model. Conversely, errors in the deep velocity model have relatively minor effects on the imaging quality of the depth...
Unknown
Visco-Acoustic Full-Waveform Inversion: A Case Study to Resolve High-Resolution Shallow Channel Absorption, Offshore Indonesia
Jun Wang, Yonghe Guo, Putri Supriandini, Kelik Moersidin, Rahmad Hidayat
Indonesian Petroleum Association
... rather than velocity estimation, meaning systematic velocity errors might already exist. Various mechanisms such as reflection, transmission...
2022
Adjustments of Velocity Logs to Tie Geophone Surveys
Warren Hicks
Oklahoma City Geological Society
.... The geophone survey is not sacred, but the probable errors are smaller than for the velocity log. Therefore, it is desirable to calibrate the log...
1961
Wilcox Depth Prediction at Katy Field, Waller County, Texas: Problem and Solution: ABSTRACT
A. M. Olander
AAPG Bulletin
... anomalies large enough to cause severe errors in depth maps may not be recognized from prior drilling experience, from regional velocity control, or from...
1985