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The AAPG/Datapages Combined Publications Database
Showing 17,690 Results. Searched 200,293 documents.
Critical Depth Uncertainty Analysis for Accurate Well Planning at Tangguh
Nurfiana Rachmawati
Indonesian Petroleum Association
... continuity were much superior and faults were more obvious and easier to pick. An accurate velocity model is the key to getting a good image...
2017
Depth Prediction Ahead of the Bit: A Case Study from the Singa-1 Discovery Well, South Sumatra
Mark Crawley, David Ginger
Indonesian Petroleum Association
.... Banik, N.C., 1984, Velocity anisotropy of shales and depth estimation in the North Sea basin: Geophysics, 49, 1411-1419. Hardage, B.A., 1983, Vertical...
1998
Inferring Stratigraphy from Seismic Data
R. E. Sheriff
AAPG Bulletin
... and attitude of reflecting interfaces has been supplemented in recent years by measurements of velocity and amplitude for stratigraphic and lithologic...
1976
Elastic full-waveform inversion at regional scale for the northern Gulf of Mexico
Yao Yu, Anastasia Pavlovskaya, Kim Shoemaker, Hongyan Li, Jennifer Qin, David Derharoutian Jr., John Law, Zhao Ge, Ruth Hammans, Vivian Robertson, Kate Glaccum
International Meeting for Applied Geoscience and Energy (IMAGE)
... and visibility of near salt stratigraphy on regional scale from a starting model with significant bulk salt and subsalt velocity errors. The high dipping...
2024
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
...: Controlled Beam (CB-PSDM) and Kirchhoff (K-PSDM) anticipated by a multiiteration update of a velocity model. Three datasets of various acquisitions...
2011
Reducing mapping ambiguity via visco-acoustic multi-azimuth dynamic resolution time-lag full-waveform inversion in offshore Senegal
Kai Zhao, Hui Zhang, Jianfeng Yao, Robert Eliott-Lockhart, Jacob Low
International Meeting for Applied Geoscience and Energy (IMAGE)
... that unsolved velocity errors remain in that area, leading to unfocused events. Conversely, the new model now shows a stronger amplitude response. We...
2024
Derivation of Seismic Depth Sections
H. Buchholtz, W. Houba
Geological Society of Malaysia (GSM)
... of the underlying velocity model. A simple depth conversion of the time scale is a very limited procedure and fails completely in the presence...
1987
3D velocity model building based upon hybrid neural network
Herurisa Rusmanugroho, Junxiao Li, M. Daniel Davis Muhammed, Jian Sun
International Meeting for Applied Geoscience and Energy (IMAGE)
...3D velocity model building based upon hybrid neural network Herurisa Rusmanugroho, Junxiao Li, M. Daniel Davis Muhammed, Jian Sun 3D velocity model...
2022
Joint full-waveform inversion of time-lapse OBN data at Thunder Horse field
Simon Luo, Esteban Diaz, Madhav Vyas, Ganyuan Xia
International Meeting for Applied Geoscience and Energy (IMAGE)
... velocity changes that are supported by the data while reducing the impact of potential sources of 4D noise, e.g., due to non-repeatability errors...
2024
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)
... (A), with the Blind Test wells excluded from the velocity models and respective Standard deviation (B). Range of error and individual errors of the blind tests (C...
2009
Constraints on Eolian Grain Flow Dynamics Through Laboratory Experiments on Sand Slopes
Richard R. McDonald , Robert S. Anderson
Journal of Sedimentary Research (SEPM)
... fixed point. Errors in our ability to locate the tracer are 0.5 min. Plots D, E, and F show the temporal velocity histories of tracers 1-2, 2-3...
1996
"Limits of Accuracy of Present Sonic Logging Equipment"
F. P. Kokesh
Oklahoma City Geological Society
... velocity equipment. My remarks will apply particularly to Sonic logging, of which I have direct knowledge. LIMITS OF ACCURACY I would like to start out...
1961
DDR: The Technology of Simultaneous Wave Field Analysis and Velocity Model Reconstruction
A. Reshetnikov, A. Tabakov, A. Mukhin, V. Eliseev
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
...DDR: The Technology of Simultaneous Wave Field Analysis and Velocity Model Reconstruction A. Reshetnikov, A. Tabakov, A. Mukhin, V. Eliseev DDR...
2006
Shallow VSP for Near-Surface Structure and Statics, #41535 (2015).
Soo-Kyung Miong, Robert R. Stewart, Joe Wong
Search and Discovery.com
... be a result of an inaccurate assignment of the velocity layer’s thickness which was solely dependent on water well drilling report. Also errors in velocity...
2015
Seismic Detection of Overpressuring and Fracturing: An Example from the Qaidam Basin, People’s Republic of China
Robert J. Paul
Southeast Asia Petroleum Exploration Society (SEAPEX)
... Blackburn, G., 1980, Errors in Stacking Velocity - True Velocity Conversion over Complex Geological Situations: Geophysics, 45, 1465–1488. Lee, K.Y....
1990
Delineating Thin-Bed Tight Gas Sand Reservoir with Prestack Joint PP/PS Inversion, #41363 (2014)
Zhiwen Deng, Ming Qiang, Shuanghu Shi, Xiaofeng Liang, Yang Zhu, Yijun Zhou, Qingjia Tong
Search and Discovery.com
... in Dyas. The P-velocity or impedance of tight gas bearing sand decreases, which may be the same as that of shale surrounding rock. A prestack stochastic...
2014
Pitfalls in Seismic Interpretation
Paul M. Tucker, Howard J. Yorston
Pacific Section of AAPG
..., in areas of complex structure, rapid changes in lithology or velocity, or irregular surface or near-surface conditions, serious errors may result from...
1972
Seismic Stratigraphic Exploration - A New Frontier
Roy O. Lindseth
Rocky Mountain Association of Geologists
...-sensing, seismic-reflection data acquisition and possible errors in data correlation, such as porosity to shale velocity matches. , INTRODUCTION...
1977
Abnormal Formation Pressures: Recognition, Distribution, and Implications for Geophysical Prospecting, Brazoria County, Texas
Edward T. Flanigan
GCAGS Transactions
... mis-ties if a single velocity function is used for time-depth conversion throughout the area. These mis-ties result from lateral variations in acoustic...
1981
Serang Field – Discovery Within a Seismic "Fault Shadow"
Tom Clark, Mike Turk, Joewono Hadiwijoto, Yoseph Partono
Indonesian Petroleum Association
... the Average Velocity Gradient Map uses actual well tops, there are no residual errors in the depth map at the wells. Away from well control, sensitivities...
2000
Multi-survey full-waveform inversion gradient balancing with illumination probing method
James Xu, David F. Halliday, Federico G. Andreasi, Xikai Zhao, James Rickett
International Meeting for Applied Geoscience and Energy (IMAGE)
... illumination problems associated with different survey types and gradient weakening due to geometrical spreading from model errors. This method can...
2024
Thinking in Depth
Jim Durrant
Petroleum Exploration Society of Australia (PESA)
... velocity effec ts has resulted in many misplaced wel ls. Areas of complex structure have often been labelled bad data areas and avoided for further drilling...
1995
Finite Difference Modeling: Part II: How to clean numeric time dispersion
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... or optimized operators can be used for spatial derivatives to keep the spatial errors at a minimum. When time-stepping the wavefield forward in time increments...
2018
The Effects of Sediment Concentration and Tube-Diameter on Particle Settling Velocity Measured Beyond Stokes' Range: Experiment and Theory
C. J. Lovell , C. W. Rose
Journal of Sedimentary Research (SEPM)
...The Effects of Sediment Concentration and Tube-Diameter on Particle Settling Velocity Measured Beyond Stokes' Range: Experiment and Theory C. J...
1991
Settling Velocity and Grain Shape of Maërl Biogenic Gravel
Siddhi Joshi, Garret P. Duffy, Colin Brown
Journal of Sedimentary Research (SEPM)
...Settling Velocity and Grain Shape of Maërl Biogenic Gravel Siddhi Joshi, Garret P. Duffy, Colin Brown 2014 718 727 Vol. 84 (2014) No. 8. (August...
2014