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The AAPG/Datapages Combined Publications Database
Showing 63,922 Results. Searched 195,372 documents.
Introduction to Nonlinear Models
Gerard V. Middleton and David M. Rubin
Special Publications of SEPM
... and initial conditions can be very complicated. If the governing equations are lin- flow equation or the wave equation, then it is commonly (though...
1995
Crustal thickness and velocity structure of southern Peninsular Malaysia
Abdul Halim Abdul Latiff, Amin Esmail Khalil
Geological Society of Malaysia (GSM)
... boundary found in the H-k analysis was then used as a guide in developing the initial P-wave velocity model for the inversion procedure. The inversion...
2018
AAPG/Datapages Discovery Series No. 7: Multidimensional Basin Modeling, Chapter 14: 3-D Coupled Basin Reaction, Transport, and Mechanics Modeling: Applications to Fracture, Fault, and Salt Tectonic Regimes
Tuncay, K., A. Park, P. Ortoleva
AAPG Special Volumes
... and the necessity for large time steps, a Newton-Raphson technique is employed to solve the nonlinear algebraic equations arising from the discretization.The...
2003
Abstracts: Time-lapse Differential AVO: Reflection Coefficient at Fluid-fluid Boundary; #90173 (2015)
Jinfeng Ma
Search and Discovery.com
... in time-lapse seismic observations of a reservoir. Introduction AVO analysis has potential to be used in discriminating pore fluids variation and estimating...
2015
Marchenko redatuming and seismic interferometry based internal multiple prediction for salt structures
Zhiwei Gu, Jianhua Geng, Ru-Shan Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... s of acoustic wave propagation. The red star denotes the shot position for generating wavefield snapshots. (b) A smooth velocity model is used to estimate...
2023
Coupled Geomechanics and Pore Confinement Effects for Modeling Unconventional Shale Reservoirs
Yi Xiong, Philip Winterfeld, Yu-Shu Wu
Unconventional Resources Technology Conference (URTEC)
... xi within this phase. Equilibrium ratio Ki = yi/xi for component i is usually used to solve Rachford-Rice (R-R) equation (Rachford Jr and Rice, 1...
2014
THE USE OF COMPUTERS IN RESERVOIR ENGINEERING
PAUL REICHERTZ
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... flow potential. This is one effect of the assumed permeability non-isotropy. functions F(φ, ψ) and G(φ, ψ) involve the partial space derivatives...
1963
SSC Optical Analog Computer: Abstract
Stanley W. Wilcox, R. W. Baltosser
Tulsa Geological Society
... designed to solve potential field equations through the use of models. It is particularly useful in handling gravity and magnetic problems. The models...
1959
Geological Factors Influencing Porosity Estimates From Velocity Logs
Roberto Sarmiento
AAPG Bulletin
... empirical approach to the travel time-porosity relations. Their use for porosity estimates is encouraged. The units used in all equations...
1961
Log Analysis of Petrofacies and Flow-Units with Microcomputer Spreadsheet Software
John H. Doveton, Willard Guy, W. Lynn Watney, Geoffrey C. Bohling, Saif Ullah, Dana Adkins-Heljeson
Tulsa Geological Society
... is shown in Figure 5, where "global" parameters are stored in columns to the left and used to solve for estimates of zone descriptors in the data section...
1996
Diagenesis Through Coupled Processes: Modeling Approach, Self-Organization, and Implications for Exploration
W. Chen, A. Ghaith, A. Park, P. Ortoleva
AAPG Special Volumes
... Hardware The solution techniques used to solve the above models involve numerical methods, through which the partial differential equations...
1990
Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data
Paul L. Stoffa
Circum Pacific Council Publications
... reflections can be correlated with compressional-wave reflections and be used to derive Poisson's ratio, (Tatham and Stoffa, 1976). But, converted shear waves...
1989
Abstract: Supervirtual S-wave Refraction Interferometry for Converted Wave Statics and Near-Surface S-wave Velocity Model Building; #90224 (2015)
Kristof De Meersman and Yoones Vaezi
Search and Discovery.com
... arrivals could be picked on the supervirtual gathers and were subsequently inverted for a near-surface S-wave velocity structure which can be used...
2015
Hydraulic Fracture Propagation Simulations in Porous Media with Natural Fractures by IPACS
Mary F. Wheeler, Sanghyun Lee
Unconventional Resources Technology Conference (URTEC)
... placement and/or acid fracturing treatments, can be achieved within computationally realistic frameworks, which can be used for reservoir management...
2020
Imaging Three-Dimensional Hydraulic Fractures in Horizontal Wells Using Functionally-Graded Electromagnetic Contrasting Proppants
Xu Zhou, Arash Dahi Taleghani, J.W. Choi
Unconventional Resources Technology Conference (URTEC)
... proppants as contrasting agents to enhance the tool response. A finite element method is utilized to solve Maxwell’s equations to simulate the impact...
2017
Analysis of Geotechnical Parameters from Geophysical Information; #70254 (2017)
O. O. Adewoyin, E. O. Joshua, M. L. Akinyemi, M. Omeje, E. S. Joel, O. T. Kayode
Search and Discovery.com
... facilities. Seismic wave velocities generated from near surface refraction method was used to determine the bulk density of soil, Young’s modulus...
2017
3D Computer Simulation of Carbonate Depositional Facies Distribution and Productivity Rates Using Continuous Set Theory to Mimic Geologists' Reasoning
William C. Parcell
GCAGS Transactions
...) is calculated for every grid node during each time step of the model run. Three linguistic terms are used as membership functions for slope: (1) "low...
2000
Predicting Cleats in Coal Seams from Mineral and Maceral Composition with Wireline Logs
David J. Johnston, Patrick J. Scholes
Rocky Mountain Association of Geologists
... currently is possible. Furthermore, because of potential borehole damage due to drilling, the microlog should be used with caution. The Stoneley wave...
1991
Acoustic nonlinear full-waveform inversion on an outcrop-based detailed geological and petrophysical model (Book Cliffs, Utah)
Daria Tetyukhina, Stefan M. Luthi, Dries Gisolf
AAPG Bulletin
... of the total wave field, given the best estimate of the contrasts. Instead of solving the full set of integral equations every time, a linear update...
2014
The Role of Diffusion in Primary and Enhanced Oil Recovery from Fractured Unconventional Reservoirs
Olufemi Olorode, Hassan Amer, Harun Rashid
Unconventional Resources Technology Conference (URTEC)
... or mass fraction, Bird (2002) presented the generalized Maxwell-Stefan equations that are based on the gradient of chemical potential. This model accounts...
2021
Applications of 3-D Seismic/Forward Modeling to Water Shutoff and Other Reservoir Management Issues
D. E. Moore, H. E. Goodman, P. D. Norman
Indonesian Petroleum Association
... strength variations with source-receiver offset are used to assess formation fluid content using an approximation of Zoeppritz's equations by Frasier...
1995
A Critical Review of Data Quality and Content Applied to FWS and Similar Tools
M. Wiltshire
Petroleum Exploration Society of Australia (PESA)
... for extraction of P and S wave velocities. The emergent data is then widely used as a basis for interpretation of reservoir properties and fluid content, from...
2004
Thermodynamic Behavior of Liquid-Supercritical CO2 Fracturing in Shale
Xiaojiang Li, Gensheng Li, Wei Yu, Haizhu Wang, Kamy Sepehrnoori, Zhiming Chen, He Sun, Shikun Zhang
Unconventional Resources Technology Conference (URTEC)
... al., 1990; Fenghour et al., 1998) are used to calculate the physical parameter of CO2. The pseudo “shock wave” behavior is observed shortly after...
2017
A Quantitative Model for Salt Deposition in Actively Spreading Basins; #30117 (2010)
Bernard Montaron and Paul Tapponnier
Search and Discovery.com
... by the surface area A occupied by the water. Qsw, Qfw, and Ebw are defined as 100-year averages. The time step used to solve equations is an integer...
2010
ELECTRIC LOG INTERPRETATION WITH THE IBM 650 COMPUTER
F. C. Hoadley, B. W. Allen
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... 154 Fig. 6: Hoadley and Allen. Equations used in solution of electric log interpretation program 155 Fig. 7: Hoadley and Allen. Card formats...
1962