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The AAPG/Datapages Combined Publications Database
Showing 2,787 Results. Searched 195,364 documents.
Migration Amplitude Recovery using Curvelets
Peyman P. Moghaddam
Search and Discovery.com
... of equations (size of model in physical domain) is less than number of unknowns (number of elements a(P) ). The reason is that the curvelet transform...
Unknown
Paleohydrology of the Eocene Las Palmas Gravels, Baja California, Mexico
Scott D. McDonough, Patrick L. Abbott
Pacific Section SEPM
... of the Las Palmas river was estimated using both field evidence and equations. The results indicate that the river slope was between 4 to 7.4 nj/km...
1989
The sample boundary effect in the low-frequency measurements of the elastic moduli of rocks
Wenhui Tan, Vassily Mikhaltsevitch, Maxim Lebedev, Stanislav Glubokovskikh, Boris Gurevich
Petroleum Exploration Society of Australia (PESA)
... induced by the applied pressure is homogenous. The bulk modulus of the fluid-saturated sample is defined as (10) K sat = -V DP / DV Solving Equations...
2019
Statistical Analysis of Regional Facies Change in Ordovician Cobourg Limestone in Northwestern New York and Southern Ontario
L. Lippitt
AAPG Bulletin
... North Latitude (equivalent to the southeast corner of the Port Leyden Quadrangle). Solving for a, b, and c the estimating equations are: [EQUATION...
1959
Quantifying the Influence of Rock Fabric, Composition, and Electrical Double Layer on the Broadband Dielectric Dispersion of Organic-rich Mudrocks
Artur Posenato Garcia, Zoya Heidari
Unconventional Resources Technology Conference (URTEC)
... dielectric dispersion effects by numerically solving the quasi-electrostatic Maxwell's equations in 3D pore-scale rock images in the frequency domain...
2018
Estimate of Vertical Anisotropy of Hydraulic Conductivity for Western Louisiana Aquifers from Grain-Size Data
Douglas A. Carlson
GCAGS Transactions
... data is analyzed to derive hydraulic conductivity (K) values using seven published equations that relate grain-size with K. With three to ten or more...
2007
A Semi-analytical Solution of the Induced Stress Change in a Layered Reservoir Based on the Stress Formulation
Shihao Wang, Yanbin Zhang, Ouassim Khebzegga, Bin Wang, Zhe Liu, Xian-Huan Wen
Unconventional Resources Technology Conference (URTEC)
... to predict the stress variation due to pressure change in a layered reservoir. Our method is based on the extended BeltramiMichell equations for poroelastic...
2022
Numerical Upcaling of Coupled Flow and Geomechanics in Highly Heterogeneous Porous Media
Daegil Yang, George J. Moridis, Thomas A. Blasingame
Unconventional Resources Technology Conference (URTEC)
... to solve different types of governing equations such as the mass balance and the equilibrium equations. Numerical upscaling of the transport...
2013
Regression Models for Faulted Structural Surfaces
W. R. James
AAPG Bulletin
... with respect to the coefficients, the minimum is found by solving the set of simultaneous linear equations (the "normal" equations) which result from...
1970
Son of Crossplot Fights Back
Piers Cooke-Yarborough
Southeast Asia Petroleum Exploration Society (SEAPEX)
... have been devised which essentially determine porosity and lithology by solving simultaneous equations – a set of tool response equations with one...
1986
Rational Analysis of Future Rate of Natural Gas Production
Martin A. Elliott , C. G. Von Fredersdorff
AAPG Special Volumes
... with the definition of the rate of gas production, p = R/L, where R is proved reserves, formulates mathematical equations which closely fit the past...
1968
Measurements and Analysis of Settling Velocities of Natural Quartz Sand Grains
Jumpei Baba, Paul D. Komar
Journal of Sedimentary Research (SEPM)
... of equations (6) through (9) where an average value of CSF or E has been used to represent the natural sand grains. Solving equations (4) and (8...
1981
A hybrid deep learning network for tight and shale reservoir characterization using pressure and rate transient data
Hamzeh Alimohammadi, Hamid Rahmanifard, and Shengnan Nancy Chen
AAPG Bulletin
... a transient data set by solving analytical governing flow equations in different boundary conditions shown in Figure 2. Figure 2. Physical models...
2022
Supercomputers for Beginners: Part II
Lasse Amundsen, Martin Landrø, Børge Arntsen
GEO ExPro Magazine
... seconds, while a small supercomputer system with 1,000 processors would need only one second. This way of solving parallel problems is thus highly...
2015
Dipmeters: Part 4. Wireline Methods
Joseph F. Goetz
AAPG Special Volumes
... fraction of shale in laminated form for input into laminated shaly sand saturation equations. Fig. 1. Sketch of a four-arm dipmeter tool illustrating...
1992
Abstract: Trace Interpolation and Elevation Statics by Conjugate Gradients; #90172 (2014)
Marcus Wilson, Robert J. Ferguson
Search and Discovery.com
... is a user parameter that controls the amount of smoothing (Menke, 1989). M is minimized when the normal equations are satisfied, so we recover φz+Δz...
2014
Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014)
Dali Zhang, Michael P. Lamoureux, Gary F. Margrave
Search and Discovery.com
... representation of the complex modulus using rational ( [ p, q] -Padé) approximation. The approximation is obtained by solving a constrained least...
2014
Hydrocarbon Type Estimation Using the Synthetic Logs: A Case Study in Baba Member, Gulf of Suez, Egypt; #20475 (2020)
Ahmed E. Radwan
Search and Discovery.com
... of this study reveal that firstly the synthetic logs play a great role in solving petrophysical and geological problems, secondly there was a good...
2020
Forward modeling for arbitrary irregular free-surface based on body-fitted grid
Erxiang Wei, Jianping Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
... represents grid spacing. The coordinate transformation coefficients can be calculated by solving the equations in the same difference format as the mapping...
2023
Abstract: Inexact Full Newton Method for Full Waveform Inversion Using Simultaneous Encoded Sources; #90187 (2014)
Amsalu Y. Anagaw and Mauricio D. Sacchi
Search and Discovery.com
..., but this is at the expense of solving a denser system of linear equations (Hessian matrix) at each iteration which is computationally expensive...
2014
Evaluating the Performance of Decline Curve Analysis Equations During the Early Life of a Well Through the Quantification of the Uncertainty Associated with the Estimated Ultimate Recovery in a Shale Oil and Gas Formation
Agustín Terminiello, Pablo Crespo, Matías Nasca
Unconventional Resources Technology Conference (URTEC)
...Evaluating the Performance of Decline Curve Analysis Equations During the Early Life of a Well Through the Quantification of the Uncertainty...
2020
A Combined Discontinuous Galerkin / Cohesive Zone Model Numerical Simulator for Hydraulic Fracturing and Application to Frac Hits Mitigation
Santiago Serebrinsky, Mauro Baldini, Federico Castez, Humberto Celleri, Isaías Gallana, Julieta Gutiérrez, Damián Smilovich
Unconventional Resources Technology Conference (URTEC)
... is a coupled process (mechanics + transport), involving at least two field equations. If other phenomena like heat transfer or proppant transport...
2023
From the Matrix to the Market - What You Don't Know Can Hurt You - Workshop Summary
William "Bill" McCain Jr., Kosta J. Leontaritis, Dave Bergman, Jack Lynn
PTTC
... as the key to solving the set of equations in the formation damage model. The near-wellbore formation is broken into small equal segments and the production...
2004
NMO Application in VTI Media: Effective and Intrinsic Eta (Geophysics Paper 6)
Joel Starr, Maz Farouki
Geological Society of Malaysia (GSM)
... and velocity in a CMP gather. NMO equations approximate the time shift which would be computed by tracing a ray through a horizontally layered Earth. A few...
2008
Climate Models and their Application
Eric J. Barron, George T. Moore
Special Publications of SEPM
... utilize different methods for solving the model equations, finite difference methods and spectral transform methods. The use of truncated expansions...
1994