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The AAPG/Datapages Combined Publications Database
Showing 73,077 Results. Searched 200,293 documents.
Diffusion and Settling of Sediments at River Mouths: A Computer Simulation Model
G. F. Bonham-Carter, Alex J. Sutherland
GCAGS Transactions
... depth to decrease as a function of the current velocity. In addition to this primary bar, a secondary bar can clearly be seen near the end...
1967
Integrated Full Waveform Inversion and Dip Constrained Tomography for Complex Carbonate Imaging - Case Study from Indonesia
Yonghe Guo, Jun Wang, Pongga Wardaya, Riaz Alai, M Afiq B Mokhtar, Rizki Krishna Pratama, Haryono Haryanto
Indonesian Petroleum Association
... Figure 5 shows the legacy PSTM stack is converted to depth domain using the PSTM velocity for comparison purposes. Figure 6 is the reprocessed PSDM stack...
2018
Imaging of Fractures and Faults inside Granite Basement Using Controlled Beam Migration (Geophysics Paper 5)
Don Pham, Jason Sun, James Sun, Qingbing Tang, Graeme Bone, Nguyen Truong Giang
Geological Society of Malaysia (GSM)
.... In 2002, a study was carried out in the area using Kirchhoff prestack depth migration, which included horizon-based model building up to the basement...
2008
Abstract: Using Computer for Time-to-Depth Conversion and Structure Mapping in Complexly Faulted Areas, by D. Szumilas; #90968 (1977).
Search and Discovery.com
1977
-- no title --
Ehsan, Athar
Search and Discovery.com
... profile at x=1.50km (record time=1.0s) As it can be observed from (Table 1), the time required to invert the linear velocity model in all cases using...
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
...), the time required to invert the linear velocity model in all cases using the conventional FWI equation is twice that of the proposed method at varying...
2023
Abstracts: A Non-Linear Conjugate Gradient (CG) Method to Solve for Vp, Vs and Density from Seismic Elastic Impedance; #90173 (2015)
Yexin Liu and Zhuoheng Chen
Search and Discovery.com
... model of compressional velocity, shear velocity and density for Conjugate Gradient (CG) optimization can be constructed using available low frequency well...
2015
Velocity Logging and Its Geological and Geophysical Applications
H. R. Breck, S. W. Schoellhorn, R. B. Baum
AAPG Bulletin
... the formation sidewalls over the distance separating the transmitter and receiver. Velocity is a function of the elastic constants of the formation...
1957
Improved Structural Imaging of the Karama Seismic Survey Using Anisotropy Kirchhoff and Beam Depth Migration
Zbigniew Ostapiuk, Bee Jik Lim, Martin Bayly
Indonesian Petroleum Association
... the project. Little lateral variation of the velocity profile was observed between dates and locations, as a consequence a single depth varying function...
2012
Seismic Processing Strategies in the Deep Water Kutai Basin Gendalo Hub Pre-Stack Depth Migration
Xiuyuan Li, Harmit Singh, Joe Zhou, Graham Hodgkiss, Neil Young, Helmut Hsiao
Indonesian Petroleum Association
... field (smoothed using depth converted, interpreted horizons in a geologically consistent manner), together with a variable water layer velocity function...
2011
Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan
Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova
International Meeting for Applied Geoscience and Energy (IMAGE)
... was piecewise linear (Figure 1). A 43 second linear 6-80Hz sweep was applied using four vibrator units at each source point. Approximately 280 vibrator points...
2024
Abstract: The Application of Extreme Attributes of PS Converted Wave; #90171 (2013)
Xiucheng. Wei, Xiang-Yang Li, Tiansheng Chen, and Lihua Jia
Search and Discovery.com
... and increases with that ratio. The extreme amplitude is a nonlinear function of the average velocity ratio νp/νs and the linear decreasing function...
2013
Conventional Velocity Model Seems to Be the Best!
Hijreen Binti Ismail, M. Izham Kassim, Khairul Hamidi Khalid, Safitri Nurida, Wahyudin Bahri Nasifi, Hendra Iriansyah Darmawan, Rizki Krishna Pratama, M. Anuar Ismail, Noor Azmah Abdullah, Indah Edria Amorita
Indonesian Petroleum Association
... was to convert interpreted time maps to depth maps using the most reliable (lesser residual error) velocity model generated from the available data. DATABASE...
2011
Abstract: Success and Failure in Pressure Prediction Using Seismic Velocities in Deep Water Environments, by P. D. Heppard, M. L. Albertin, B. E. Wagner, and D. J. Bettencourtt; #90923 (1999)
Search and Discovery.com
1999
Abstract: Investigation of the Relationship between Seismic Velocity Dispersion Principles and the Permeability of Subsurface Porous Materials; #90174 (2014)
Adrienne Campbell, Winnie Pun, and Bernd Milkereit
Search and Discovery.com
... dependent P wave velocity dispersion and the permeability of subsurface porous materials. This is carried out using geophysical data obtained from the Mallik...
2014
Nonlinear LS-RTM based on the seismic scale separation and full-wavefield multiparameter FWI
ystein Korsmo, Yang Yang, Nizar Chemingui, Andrey Pankov, Antonio Castiello
International Meeting for Applied Geoscience and Energy (IMAGE)
.... FWI can as well incorporate reflections, which allow velocity estimation beyond the penetration depth of diving waves. For this to be feasible...
2022
Abstract: Full Waveform Inversion with Phase Encoded Deconvolution Imaging Condition; #90224 (2015)
Wenyong Pan, Kris Innanen, and Gary Margrave
Search and Discovery.com
... shows the normalized true model perturbation. Figure 2c show the phase encoded source illumination using the initial velocity model with 60 simulations...
2015
A Comprehensive Approach to Depth Imaging in Thrust Belt Environments
Ron Schmid, Brian Link, Patrick Butler
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... model. Attempts to pick prestack depth migration velocity models from a scan of constant velocity migrations (or constant function migrations) has...
1997
Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf
Vidar Storvoll, Knut Bjrlykke, Nazmul H. Mondol
AAPG Bulletin
... in sedimentary rocks as a function of sediment composition, porosity, pore-pressure, burial-history, and compaction processes. A first-order linear velocity-depth...
2005
The Application of PSDM VTI Method to Generate a Velocity Model That Can Solve the Mistacking Problem
Aulia Ahmad Nafis, Hasan Nurudin, Ikhsan Hanurogo, Bagus Sapto M, Ahmad Zaenudin
Indonesian Petroleum Association
... gather and gamma synthetic as the controlling factors shows less error, after that the final velocity model is used for depth migration process to compare...
2018
Land FWI in the Sultanate of Oman: Challenges and advances on the road to high-resolution velocity
Mohammad Sheryar Farooqui, Yonghe Guo, Azza Al Hasni
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the velocity model using diving waves, several successful examples of land FWI applications in the Middle East have emerged (Cheng et al., 2017; Sedova et al...
2024
RNN-based seismic velocity model building: Improving generalization using hybrid training data
Hani Alzahrani, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
...RNN-based seismic velocity model building: Improving generalization using hybrid training data Hani Alzahrani, Jeffrey Shragge RNN-based Seismic...
2022
Envelope full-waveform inversion of marine seismic data
Kai Xiong, David Lumley, Wei Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
... model with IEI and a high-resolution velocity model with IEI+FWI using 24 Hz data. (a) (b) Figure 1. Shot gathers (8Hz) at sx=8 km. (a) Observed data...
2022
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
... sediments, velocity of P-waves varies significantly as a function of the fraction of pore water that is unfrozen (Zimmermann and King, 1986). Sediments...
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
... sediments, velocity of P-waves varies significantly as a function of the fraction of pore water that is unfrozen (Zimmermann and King, 1986). Sediments...
2013