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The AAPG/Datapages Combined Publications Database
Showing 803 Results. Searched 197,434 documents.
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)
... the forward and backward propagations. a) b) 5 1e 1 ¡ 5 4 MSE gradient descents (Kingma and Ba, 2014). The predicted velocity is evaluated using R2...
2022
2D isotropic and vertical transversely isotropic RTM using SEG Hess VTI Model
Richa Rastogi, Abhishek Srivastava, Monika Gawade, Nithu Mangalath, Laxmaiah Bathula, Bhushan Mahajan, Suhas Phadke
International Meeting for Applied Geoscience and Energy (IMAGE)
... wavefield is propagated forward in time whereas, the receiver wavefield is propagated backward in time (Youn and Zhou, 2001; Mcmechan, 1983...
2022
Deep learning Laplace-Fourier full-waveform inversion with virtual supershot gathers
Lei Fu, Daniele Colombo, Weichang Li, Ernesto Sandoval-Curiel, Ersan Turkoglu
International Meeting for Applied Geoscience and Energy (IMAGE)
... through backward wavefield propagation of data residuals based on adjoint-state methods. The success of FWI depends on an initial model of the earth...
2022
Landslides on the Panama Canal
George Berman
Circum Pacific Council Publications
... engineers conclude the following about the slides in the Cut. 1. New landslides are the result of the reactivation and extension, both backward...
1995
Memorial: Daniel Dale Condit (1886-1955)
L. G. Weeks
AAPG Non-Technical and Memorials
... dignified manner. As a traveler he was Well liked wherever he went. E v e n among the many unfortunate, backward peoples that he met far off the beaten...
1956
An Eocene Fauna from the Moctezuma River, Mexico
Joseph A. Cushman
AAPG Bulletin
... the periphery, where an abrupt turn backward is made; surface depressed between the sutures, which are somewhat raised above the general surface...
1925
Probabilistic Decision Analysis Using Least Squares Monte Carlo Simulation
Nuzulul Haq
Indonesian Petroleum Association
... at times before expiration by a simple regression from the day of maturity backward to the starting time. Once the holding values at each point in time along...
2012
Blockchains - Achieving Consensus in Oil and Gas Business Processes
Scott Waller
Australian Petroleum Production & Exploration Association (APPEA) Journal
... entirely on backward looking, analogue, time-consuming auditing exercises to achieve an acceptable level of trust in JV relationships. The supplier-driven...
2021
Wave scattering by the formation velocity perturbation surrounding a fluid-filled borehole
Zhou-Tuo Wei
International Meeting for Applied Geoscience and Energy (IMAGE)
... theory into the acoustic logging to evaluate the formation heterogeneity by the backward scattered dipole S-S coda wave, and successfully applied...
2022
Catastrophic Debris Avalanche from Ancestral Mount Shasta Volcano, California
D. R. Crandell, C. D. Miller, R. L. Christiansen, H. X. Glicken, C. G. Newhall
Pacific Section SEPM
... that distance, without being severely disrupted. Although some blocks rotated forward or backward, they remained right side u p . HAZARD IMPLICATIONS Very...
1984
Qualitative and Quantitative Processing of Side Scan Sonar Data
F.S. Dwan, A.L. Anderson, T.W.C. Hilde
Circum Pacific Council Publications
... backward (toward the projector) from the ocean floor. The Backscattering Strength (BSS), which is related to acoustic characteristics of the seafloor...
1996
Least-squares non-stationary triangle smoothing
Reem F. Alomar, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... + xt 1 . (3) The adjoint of this operation is anti-causal integration, or division by (1 Z 1 ), and is represented by the backward recursion in time...
2022
Cracking New CBM Potential in South Sumatera: Current Progress, Obstacles, and Opportunities
Dyah Pitaloka C., Dramastra Lalean, Noviar Hendriyanto
Indonesian Petroleum Association
... that remains in the sample after the desorption process ceased. As the lost gas volume was measured using backward extrapolation, a valid number of measured...
2013
High Angle Dips at Erosional Edge of Overthrust Faults
Gray W. Crosby
CSPG Bulletin
... (1937) as a name for a discrete and coherent landslide block that has undergone a backward rotation about a subhorizontal axis wherein dips become...
1967
Palaeomagnetic Methods of Investigating Polar Wandering and Continental Drift
S. K. Runcorn
Special Publications of SEPM
... the precision corresponds to the re ciprocal of the variance of ordinary one dimensional theory The relative density of points in a forward to a backward...
1963
Petroleum Exploration in Deep Water and Frontier Areas of Indonesia
Salmon Pattinama, Luki Samuel
Indonesian Petroleum Association
... since the incentive packages were implemented, we may look backward to the past exploration activities and their results in deep water and frontier...
1992
A Novel Method for Simultaneous Determination of Relative Permeability and Capillary Pressure from Corefloods (Gas/CO2-Water Systems)
Nassim Hemmati, Sara Borazjani, Alexander Badalyan, Luis Genolet, Aron Behr, Abbas Zeinijahromi, Pavel Bedrikovetsky
Australian Petroleum Production & Exploration Association (APPEA) Journal
... a forward and backward flush with oil to ensure full saturation with oil at Swi, and ageing the core for 2 weeks at reservoir temperature; (iv) Flushing...
2023
Exact kinematic behavior of the P-SV converted wave in a vertical transversely isotropic medium
Guillaume Cambois
International Meeting for Applied Geoscience and Energy (IMAGE)
... that the qP ray must first travel backward for the converted qSv ray to reverse course and reach the receiver. In this case the conversion point would...
2023
Historical Beach Changes, Florida "Big Bend" Coast
William F. Tanner
GCAGS Transactions
... backward into time. Because this shift has not been synchronous along the study area, it could not have been due to fluctuations in mean sea level...
1975
Viscoelastic anisotropic seismic wave modeling using recursive convolution method and curvilinear collocated finite difference method for different boundaries
Chao Jin, Bing Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
... the forward and backward operators, respectively. As the points locate on the free surface (k=k0) or the fluid-solid interface (k=ki), we employ...
2023
Invertible neural network for automatic velocity model building and uncertainty quantification
Yen Sun, Junzhu Shen, Paul Williamson
International Meeting for Applied Geoscience and Energy (IMAGE)
... sense but learn the inverse function at the same time. The loss function includes forward and backward misfits, with maximum mean discrepancy (MMD) terms...
2023
Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well
Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist
International Meeting for Applied Geoscience and Energy (IMAGE)
...l states in forward-backward filtering: IEEE Transactions on Signal Processing, 44, 988–992, doi: https:// doi.org/10.1109/78.492552. Joy, C., A. Reit...
2023
Acoustic approximation VTI reverse-time migration using pseudo-depth mapping method
Xinwen Zhang, Jianping Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... Geophysics, 15, 234–239, doi: https://doi.org/10.1007/s11770-018-0681-x. Whitmore, N. D., 1983, Iterative depth migration by backward time propagation...
2023
Evaluation of Wave-Generated Longshore Current Velocities and Sand Transport Rates on Beaches
Paul D. Komar
Special Publications of SEPM
... an if the longshore current actually 4 worked backward for the 0 b 0 seen 8 cos 0 of the introduction of equation general than equation 6...
1987
Improving Human Resource Development Processes in P.T. Caltex Pacific Indonesia
David A. Minemier, Al Nurbandana
Indonesian Petroleum Association
... Resource Department driven and put the burden on the supervisor. At the end of a performance year, the supervisor was required to complete a backward...
1995