Parameters Influencing Porosity in Sandstones: A Model for Sandstone Porosity Prediction

M. Scherer

AAPG Bulletin

... is nonlinear, except for depth in the interval 500 to 5,000 m. Porosity of sandstones with no or only small amounts of cement can be estimated within acceptable...

A New Method for Prospect Appraisal

H. C. Chen , J. H. Fang

AAPG Bulletin

... extensively studied using statistical decision methods, mathematical programming (linear and nonlinear), and multiple-criteria decision-making techniques...

The Age of Illite Cement Growth, Village Fields Area, Southern North Sea: Evidence from K-Ar Ages and 18O/16O Ratios

A. G. Robinson , M. L. Coleman , J. G. Gluyas

AAPG Bulletin

... by a range of standard petrographic methods. The time axis is relative and probably highly nonlinear. Click to view image in GIF format. Fig. 4. [Grey Scale...

A Simpler Kinetic Model of Vitrinite Reflectance

Noriyuki Suzuki , Hideki Matsubayashi , Douglas W. Waples

AAPG Bulletin

.... There is no general closed-form solution to the differential equation used in calculating kinetics since the thermal history is normally nonlinear...

Estimation of Single-Phase Permeability from Parameters of Particle-Size Distribution

Manmath N. Panda, Larry W. Lake

AAPG Bulletin

... that are nonlinear (Figures 4, 5). (4) Permeability is most sensitive to porosity, followed by mean grain size, and then sorting (Figures 4, 5). (5...

Scaled Physical Model of Secondary Oil Migration

Michele Moisio Thomas , Jamie A. Clouse

AAPG Bulletin

... rock with their mathematical analysis of nonlinear waves.] The dispersion was also scaled from model to field. With the assumption of bilateral...

Detection of hydrocarbon reservoir boundaries using neural network analysis of surface geochemical data

Hari Doraisamy, Daniel H. Vice, Phillip M. Halleck

AAPG Bulletin

... nonlinear problems by learning the relationships between a series of input parameters and desired output parameters. Specifying any algebraic equation...

A method for assessing statistical significance and uncertainties for calibration of 1-D thermal basin maturation models

S. Noeth, R. O. Thomsen, R. Littke

AAPG Bulletin

... the highly nonlinear relationships between model parameters. These procedures can result in an overinterpretation of model results. Inversion...

Structural imaging in the Rocky Mountain Foothills (Alberta) using magnetotelluric exploration

Wen Xiao, Martyn Unsworth

AAPG Bulletin

... Republic: Tectonics, v. 22, p. 10131025.Rodi, W., and R. Mackie, 2001, Nonlinear conjugate gradient algorithm for two-dimensional magnetotelluric inversion...

Two-dimensional simulation of controls of fracture parameters on fracture connectivity

Kajari Ghosh, Shankar Mitra

AAPG Bulletin

... trend. A significant increase in connectivity is attained when the normalized spacing drops below 0.1, as indicated by the nonlinear increases in FCA...

An approach to reduce exploration risk using spectral decomposition, prestack inversion, and seismic facies classification

Carlos Jesus, Wagner Moreira Lupinacci, Patricia Takayama, Joana Almeida, and Danilo Jotta Ariza Ferreira

AAPG Bulletin

... of linear or nonlinear correlations among the input seismic attribute volumes and generates facies expected for the area, helping to identify...

Pore-scale electrical numerical simulation and new saturation model of fractured tight sandstone

Qian Wang, Maojin Tan, Chengwen Xiao, Siyu Wang, Chuang Han, and Lingtan Zhang

AAPG Bulletin

... on digital rocks. He pointed out the nonlinear relationship between resistivity index (RI) and Sw. Based on digital rock technology, Li et al. (2016) revealed...

Shale brittleness prediction using machine learning—A Middle East basin case study

Ayyaz Mustafa, Zeeshan Tariq, Abdulazeez Abdulraheem, Mohamed Mahmoud, Shams Kalam, and Rizwan Ahmed Khan

AAPG Bulletin

... problems in different fields as soft computing techniques. Complex and nonlinear functions and algorithms between input and output parameters...

Control of grain size of brittle minerals on fracture development in shale under compression: Insights from numerical experiments

Qingfeng Meng and Fang Hao

AAPG Bulletin

...-displacement law to each particle contact, and updates of particle positions at each timestep (Benesh et al., 2007). This enables simulating nonlinear...

A novel method for digitizing sedimentological graphic logs and exporting into reservoir modeling software

Aly Abdelaziz, Greg M. Baniak, Thomas F. Moslow, Alessandro Terzuoli, and Giovanni Grasselli

AAPG Bulletin

... a horizontal line (Figure 6). This eliminates situations in which an irregular (nonlinear or nonhorizontal) sedimentary unit boundary, such as that reflecting...

GEO India 2008 Conference and Exhibition, September 16-19, 2008, New Delhi, India - Abstracts, 90081 (2008)

Search and Discovery.com

2010 AAPG Pacific Section, Joint Meeting with West Region SPE and GSA Cordilleran Section, Anaheim, California, May 27-29, 2010, - Abstracts; #90114 (2010).

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Abstract: Azimuthal Fourier Coefficient Elastic Inversion; #90174 (2014)

Benjamin Roure and Jon Downton

Search and Discovery.com

... is based is nonlinear and so it is difficult to gain an intuitive understanding of the uncertainty and resolution of each of the parameters. In order...

Abstract: Characterizing Dipping Fractures from P-wave Amplitude Versus Azimuth Studies; #90187 (2014)

Jon Downton and Hampson Russell

Search and Discovery.com

... solution. Non-zero dip introduces bias into the estimates (compared to ideal solution on the y-axis). These nonlinear equations relate the six wij...

Enhanced Monitoring of Geologic Carbon Sequestration Using 3-D Passive Microseismic Location Techniques

Delaine Reiter and William Rodi

Search and Discovery.com

... approach to compute confidence regions that incorporate more general assumptions. In the numerical approach the nonlinear behavior of the travel times...

Connectivity of Pore Space: The Primary Control on Two-Phase Flow Properties of Tight-Gas Sand, #50222 (2009)

Maryam A. Mousavi and Steven L. Bryant,

Search and Discovery.com

..., Colorado, April. In addition to reducing connectivity, the porosity-reducing mechanisms change pore throat size distributions in a nonlinear fashion...

Wrench Tectonics Control on Neogene-Quaternary Sedimentation and Hydrocarbon Accumulation along the Mid-Hungarian Mobile Belt; #10388 (2012)

Gyorgy Pogacsas, Gyorgyi Juhasz, Arpad Dudas, and Janos Csizmeg

Search and Discovery.com

... in which deformation is described by a nonlinear viscous constitutive relationship. Their fairly picturesque model includes the competing influences...

Discrete Fracture Network Simulation: Application of Tectonic Simulation and Conditional Global Optimization Technique, #40861 (2012)

Nima Gholizadeh Doonechaly, Sheik Rahman

Search and Discovery.com

... and updated in a nonlinear scheme as described previously. Boundary velocity is applied in such a way that the model’s wavelength changes with a strain rate...

Evaluation of General Resistivity Density-Based Saturation in Thin, Laminated Sand-Shale Sequences, #41042 (2012)

John Quirein, Burkay Donderici, David Torres, Eric Murphy, Jim Witkowsky

Search and Discovery.com

... with the horizontal and vertical resistivity measurements. This is accomplished by applying a robust and efficient nonlinear solver, which has been built...

Benefiting from Variogram Information to Characterize Facies Distribution in History Matching with EnKF; #41315 (2014)

A. Abadpour, P. Bergey, R. Piasecki, and T. Blanchard

Search and Discovery.com

... models. Its performance remains acceptable in nonlinear cases and non-Gaussian distributions, but it is still recommended to re-parameterize whenever...