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The AAPG/Datapages Combined Publications Database

Showing 36,608 Results. Searched 195,452 documents.

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Old Electric Logs: An Interpretation and Analysis Workshop

Willard J. (Bill) Guy

PTTC

... (pre-1958). • Review the Archie equations in order to determine the Sw and BVW. • Be able to determine the porosity from the uncalibrated Neutron...

2005

New Mathematical and "Stereographic Net" Solutions to Problem of Two Tilts--With Applications to Core Orientation

Curtis H. Johnson

AAPG Bulletin

... fundamental equations for solving these problems in terms of two new parameters are derived. The use of these equations in constructing nets for the solution...

1939

The Applicability of the Gibbs Equation for Grain Settling Velocities to Conditions Other than Quartz Grains in Water

Paul D. Komar

Journal of Sedimentary Research (SEPM)

... No. 4. (December), Gibbs et al. (1971) have derived empirical equations that yield settling velocities in water for spherical grains of approximately...

1981

Calculation of Stratigraphic Thickness in Parallel Folds: GEOLOGICAL NOTES

John B. Mertie, Jr.

AAPG Bulletin

... constant at two station points, traces of the planes tangent to the stratigraphic surfaces are drawn in a vertical profile normal to these tangent...

1944

Introduction to Nonlinear Models

Gerard V. Middleton and David M. Rubin

Special Publications of SEPM

... ical model", that is, a set of equations that are designed to represent some aspect of the real world. We recognize that other types of models...

1995

Prediction of Normal-Fault Geometries--A Sensitivity Analysis

Martha Oliver Withjack, Eric T. Peterson

AAPG Bulletin

...Prediction of Normal-Fault Geometries--A Sensitivity Analysis Martha Oliver Withjack, Eric T. Peterson 1993 1860 1873 77 11. (November) Several...

1993

Abstract: Permeability Anisotropy in Microsucrosic Dolomites

Perry O. Roehl

GCAGS Transactions

... dielectric and permeability anisotropy. This is based on the simultaneous solution of three equations of the form y-h = a sin (kx-b), where three...

1969

Permeability of Unconsolidated and Consolidated Marine Sediments, Gulf of Mexico

William R. Bryant, William E. Hottman, Peter K. Trabant

GCAGS Transactions

... a significant sand size fraction present (more than 5% sand). The permeabilities of the groups ranged from 10-5 to 10-10 cm/sec with 35 normal seawater...

1974

Permeability Anisotropy in Microsucrosic Dolomites: ABSTRACT

Perry O. Roehl

AAPG Bulletin

... consistent dielectric and permeability anisotropy. This is based on the simultaneous solution of three equations of the form y - h = a sin (kx-b), where...

1969

Width-Thickness Relations for Fluvial and Shoreline Sand Bodies: ABSTRACT

R. B. Lennon

AAPG Bulletin

... sands for any stated thickness. Both populations may be fit by bivariate log-normal distributions and both result in nearly linear relations between...

1970

Permeability of Unconsolidated and Consolidated marine Sediments, Gulf of Mexico: ABSTRACT

W. R. Bryant, William E. Hottman, Peter K. Trabant

AAPG Bulletin

... to 10-10 cm/sec with 35 ppm normal seawater being used as the saturating fluid. A statistical analysis of the natural log of permeability versus...

1974

Gas Apparent Permeability Prediction in Heterogeneous Shale Matrix Based on Fractal Theory and Fuzzy Statistical Method

Di Chai, Xiaoli Li

Unconventional Resources Technology Conference (URTEC)

... characterized by structural parameters with normal distributions. Subsequently, the optimal parameters of structural parameter distributions are calculated...

2020

Abstract: AVO Depth Modelling (Paper 2)

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... the normal. The Zeoppritz's equations, its approximations and extensions are used to compute the angular dependence of reflection coefficients for P...

1996

Subsurface Fault Throw: A Reply

Luis M. Banks

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... across the throw equations merely by accident, as a sequel to the paper on the Santa Ana thrust, and simply because strong objections regarding throw...

1959

Calculating Sandstone-Shale Ratios from Growth Normal Fault Dips on Seismic Profiles

R. E. Bischke , J. Suppe

GCAGS Transactions

...Calculating Sandstone-Shale Ratios from Growth Normal Fault Dips on Seismic Profiles R. E. Bischke , J. Suppe 1990 Vol. 40 (1990), We present...

1990

On the Comparison Between the Threshold of Sediment Motion Under Waves and Unidirectional Currents with a Discussion of the Practical Evaluation of the Threshold: REPLY

Paul D. Komar, Martin C. Miller

Journal of Sedimentary Research (SEPM)

... graphically in Figure 4, based on the two threshold equations. This graph does assume s = 2.65 gm/cm3 and so applies only to normal quartz sands. For D > 0.05...

1975

PowerPoint Presentation

Engelder

Search and Discovery.com

... a pressure on the grains surrounding the pore. The most useful equations for teaching the concept of stress are the equations for normal (sn) and shear...

Unknown

The Three Elements of Structural Geology Part 1, #41849 (2016).

Terry Engelder

Search and Discovery.com

... the concept of stress are the equations for normal (sn) and shear (t) stress in terms of principal stresses (s1, s3). The derivation of these equations...

2016

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