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The AAPG/Datapages Combined Publications Database
Showing 65 Results. Searched 200,293 documents.
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FWI uncertainty analysis with Stein variational gradient descent
Haoyang Cen, Kaihang Guo, Diancheng Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... scale, Ξ½ is a smoothness parameter, π€π€ is the gamma function, πΎπΎππ is the modified Bessel function of the second kind of order Ξ½...
2024
Characterization of Early-Time Performance of a Well with a Vertical Fracture Producing at Constant Pressure
Nicholas Wiewiorowski, Alex Valdes-Perez, Thomas A. Blasingame
Unconventional Resources Technology Conference (URTEC)
... = = = = Exponential integral Error function Gamma function Modified Bessel Functions of the first kind, first order Appendix A: Constant Pressure Solution...
2017
Analytical Approach for Injectivity Profiling Through Warm-Back Analysis in Multilayer Reservoirs
Refaat Hashish, Mehdi Zeidouni
Unconventional Resources Technology Conference (URTEC)
...) 2 To enable use of the graphical technique for arbitrary number of layers by a field analyst, a MATLAB code is developed to generate the plot...
2019
On Using The Log-hyperbolic Distribution To Describe The Textural Characteristics Of Eolian Sediments
K.-H. Wyrwoll , G. K. Smyth
Journal of Sedimentary Research (SEPM)
..., Handbook of mathematical functions, with formulas, graphs and mathematical tables: Washington, National Bureau of Standards. BAGNOLD, R. A., 1941...
1985
Rock-Fluid Interaction Impact on Geomechanical and Acoustic Properties in Shale Reservoirs: Anisotropic Grain Contact Adhesion Model
Binh T. Bui, Azra N. Tutuncu
Unconventional Resources Technology Conference (URTEC)
... is the incompressibility of the fluid in the gap, a is the contact radius, h o is the equilibrium separation distance, Jo(οΊa) and J1(οΊa) are Bessel functions of the first...
2014
A Diagnostic Approach to Identify Complex Fracture Geometries in Unconventional Reservoirs Using a Semi-Analytical Model
Zhiming Chen, Xinwei Liao, Wei Yu, Kamy Sepehrnoori, Xiaoliang Zhao, Xiaojiang Li, He Sun
Unconventional Resources Technology Conference (URTEC)
... qFD is the production flux of the line source into fracture networks; K 0 ο¨ x ο© is the second kind of modified Bessel functions; s is the Laplace...
2017
Abstracts: Accurate Declipping Hybrid Algorithm for Ground Penetrating Radar Data; #90173 (2015)
Akshay Gulati and R. J. Ferguson
Search and Discovery.com
... combination of Kaiser Bessel Non uniform fast Fourier transform (NFFT) and Projection on Convex Set (POCS) to restore clippings. This algorithm is tested...
2015
SPE 49025: Geostatistical Analysis of Petrophysical Data and Modeling of Fluid-Flow Effects in Carbonate Outcrops
James W. Jennings, Jr., Stephen C. Ruppel, W. Bruce Ward
West Texas Geological Society
... to 2,700-ft [810-m] lateral trends. The short-range heterogeneities can be modeled with K-Bessel semivariograms having asymptotic power-law behavior...
1999
Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data
Paul L. Stoffa
Circum Pacific Council Publications
..., one ship assumes control over the shooting and receiving functions of both ships (Figure 11). If a good, reliable intership radio link is provided...
1989
Quantifying Total Apparent Hydraulic Fracture Conductivity and Its Significant Degradation from Systematic Bottom-Hole Pressure Measurements in Permian Wells
Lang Zhan, Adenike Tokan-Lawal, Phillip Fair, Robert Dombrowski, Xin Liu, Veronica Almarza, Alejandro Girardi, Zhen Li, Robert Li, Martin Pilko, Noah Joost
Unconventional Resources Technology Conference (URTEC)
... fracture within a homogenous formation: = β β β (1) where, Ko and K1 are the modified zero and first order Bessel functions of the 2nd kind, and z...
2019
Assessing spatial uncertainty in reservoir characterization for carbon sequestration planning using public well-log data: A case study
Erik R. Venteris, Kristin M. Carter
Environmental Geosciences (DEG)
... variogram functions as well; a spherical model was used for all because exponential and k-Bessel variogram models did not improve the results...
2009
Quantitative Electric Log Interpretation of "D" and "J" Sands-Denver Basin
J. Grynberg
Rocky Mountain Association of Geologists
.... These equations are various Bessel functions, which will not be discussed in this paper. However, we can define the short normal apparent resistivity, R...
1956
Rate Transient Analysis of Fracture Swarm Fractal Networks
Jorge A. AcuΓ±a
Unconventional Resources Technology Conference (URTEC)
...βπΏπΏ) βπ§π§ Where πΌπΌ πΏπΏ ( π₯π₯ ) and πΎπΎπΏπΏ ( π₯π₯ ) are the modified Bessel functions of the first and second kind respectively. For radial flow, the limit...
2020
How to Design Onshore Pipeline Under Coal Seam Area
Yohanes Kristianto, Redo Waworuntu, Muhdi Sujatmiko, Wawan Gunawan
Indonesian Petroleum Association
... Zone 48, Datum Djakarta (Batavia), Bessel 1841) 325000 320000 315000 SUBAN#5 SUBAN#7 SUBAN#3 A' 9720000 A 9720000 SUBAN#2 SUBAN#6 SUBAN#4...
2010
Size Analysis of Fine-grained Suspended Sediments: A Review
Donald J. P. Swift , J. R. Schubel, Raymond W. Sheldon
Journal of Sedimentary Research (SEPM)
.... These parameters are related by means of Bessel functions to produce a series which converges rather slowly for particles as large as several...
1972
Some Inference Problems in Paleocurrent Studies
David J. Sanderson
Journal of Sedimentary Research (SEPM)
...(k) (1) where I0() is a bessel function with an imaginary argument. The distribution involves two statistics, which is the mean direction and , which...
1973
Water Influx Predictions in Reservoirs with Aquifer Drive Using the Two-Phase Reservoir Integral Type Pseudo-Pressure with Applicability in Gas Hydrate Reservoirs; #42006 (2017)
Melvin Kome, Mohd Amro
Search and Discovery.com
.... 595-609. [Io(z)] - The Wolfram Function Site, Integral of Modified Bessel Function of the First Kind. Website accessed February 5, 2017. http...
2017
Abstract: The Effects of Fluid Viscosity on Seismic Response: A Model Study; #90171 (2013)
Fereidoon Vasheghani, Larry Lines, and Joan Embleton
Search and Discovery.com
... of quality factor, is given by (Dvorkin et al, 1994): (3) where in the above (4) (5) (6) (7) (8) In these equations, J denotes a Bessel function...
2013
Three-Dimensional Numerical Modeling of Deltas
Irina Overeem, James P.M. Syvitski, Eric W.H. Hutton
Special Publications of SEPM
... alluvial sediments: Sedimentology, v. 5, p. 89β101. AMOS, D.E., 1986, ALGORITHM 644: a portable package for Bessel Functions of complex argument...
2005
Estimation of In-Situ Wettability using Multi-Frequency Electromagnetic Measurements
Yuteng Jin, Siddharth Misra, Dean Homan
Unconventional Resources Technology Conference (URTEC)
... assume Bond number is small, where gravity force is negligible. πΎπΎ0 and πΎπΎ1 is modified Bessel function of the second kind of order 0 and 1...
2020
Solid substitution: theory versus experiment
Yongyang Sun, Maxim Lebedev, Vassili Mikhaltsevitch, Stanislav Glubokovskikh, Stefan Iglauer, Boris Gurevich
Petroleum Exploration Society of Australia (PESA)
...) βπ π , πΌ = π/β is an inverse aspect ratio, and πΌ π denotes a modified Bessel function of the first kind and of the order π. Octodecane experiment...
2018
Abstract: Physical Modeling for Azimuthal AVO Over a Simulated Fractured Medium; #90174 (2014)
Faranak Mahmoudian, Gary F. Margrave, and Joe Wong
Search and Discovery.com
... to the emitting plane, ο§ is the angle to the vertical axis, and J1 is the Bessel function of order 1. The directivity equation as in equation (1...
2014
Abstract: Building Better Models Β Making Full Use of Petrophysical Data; #90211 (2015)
Elizabeth LβHeureux
Search and Discovery.com
... is the modified Bessel function of the second kind of order Ξ½. Initial estimates of the Hurst number can be obtained from the slope of the power spectrum...
2015
Shallow Conduit Behavior of Silicic Magma Chambers: A Detailed Thermal Model; #40949 (2012)
Cathina Gunn de Rosas and Glen Mattioli
Search and Discovery.com
... is given byβ equation 3 (Denlinger & Hoblitt, 1999). βwhere a1 is the first root of the Bessel function J0, and J1 is the derivative of J0...
2012
Conditional image prior for uncertainty quantification in full-waveform inversion
Lingyun Yang, Omar M. Saad, Tariq Alkhalifah, Guochen Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
...) where Ξ΅ is the variance of the Gaussian process, Ξ denotes the gamma function (Artin, 2015), KΞ· represents the modified Bessel function...
2024
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