Dynamics of Bedforms in the Lower Mississippi River

David J. Harbor

Journal of Sedimentary Research (SEPM)

... lines show a least-squares linear regression. The downstream segment (triangles) has larger dunes for a given flow depth. FIG. 9. Enhancement of bedform...

Calculation of Vitrinite Reflectance from Thermal Histories: A Comparison of Some Methods

David W. Morrow, Dale R. Issler

AAPG Bulletin

... a least squares fit to the tabulated TTI-%Ro values of Waples (1980) with correlation End_Page 611------------------------------ coefficient of 0.99...

Natural fractures in the Barnett Shale and their importance for hydraulic fracture treatments

Julia F. W. Gale, Robert M. Reed, Jon Holder

AAPG Bulletin

... constant value.Microsoft Excel's SOLVE option was used to determine the parameters from a least-squares fit of all load decay data. This process is set...

CSPG/CSEG/CWLS GeoConvention 2012, May 14-18, 2012 Calgary TELUS Convention Centre & ERCB Core Research Centre, Calgary, Alberta, Canada; - Abstracts, #90174 (2014).

Search and Discovery.com

GeoConvention 2014; - Abstracts, #90224 (2015).

Search and Discovery.com

Jurassic Magmatic Arc in the Alaska-Aleutian Range Batholith–Chemical Variations and Polarity*

Bruce L. Reed, Alfred T. Miesch, Marvin A. Lanphere

Alaska Geological Society

... surfaces, fitted by conventional least-squares methods, were used to examine the geographic variation of major oxides, normative minerals, and a few...

RELATIONS BETWEEN DEPTH OF BURIAL, VITRINITE REFLECTANCE AND GEOTHERMAL GRADIENT: THE LONE STAR BERTHA ROGERS BOREHOLE, ANADARKO BASIN, OKLAHOMA, USA -- THE WORLD'S DEEPEST EXPLORATION BOREHOLE

G. M. Friedman

Journal of Petroleum Geology

... for maceral samples in the Bertha Rogers borehole. Linear least squares fit is shown. This plot shows increasing thermal alteration of the maceral...

Mineral Resource Estimation and Statistical Exploration

F. P. Agterberg

CSPG Special Publications

.... The method then proceeds by smoothing the intercept for any direction a by replacing it by the value of a parabola fitted by least squares to all intercepts...

Perspectivities in the Solar System: DISCUSSION

D. H. Hall

CSPG Bulletin

... relation, is a hyperbola rather than a logarithmic curve as stated. A least squares best-fit of (1) to the points plotted in Fig. 5 gives, with x...

Borehole gravity in Horizontal Wells

Andrew J. Black, Jennifer Hare

Petroleum Exploration Society of Australia (PESA)

... straightforward involving a linear least squares fit of repeated measurements at the gravity stations but these tend to involve most processing time...

Seismic Foldout: Revealing a Promising New Play Concept in the Salar Basin, Offshore Canada

Yermek Balabekov, Susana Tierrablanca, Sriram Arasanipalai, Nizar Chemingui, PGS

GEO ExPro Magazine

... various attributes. Traditionally, a sequential workflow using Full Waveform Inversion (FWI) followed by Least- Squares Reverse Time Migration (LS-RTM...

Production Allocation and Fluid Fingerprinting in Conventional Reservoirs

Craig D. Barrie, Eric Michael

GEO ExPro Magazine

... contributions by solving equations (e.g. least squares best fit) and uncertainty estimation NO “ONE SIZE FITS ALL” APPROACH The primary output from...

Rejuvenating legacy seismic for screening carbon storage sites in the Gulf of Mexico

Neville Brookes, Ravi Kumar, Gregor Duval, Simon Otto, CGG

GEO ExPro Magazine

.... This improved approach benefited from least-squares fitting of the data and improved utilisation of the lower frequencies, resulting in broadband...

Relation of Carbon Dioxide Content of Apatite of the Phosphoria formation to Regional Facies

Robert A. Gulbrandsen

Rocky Mountain Association of Geologists

... western A and South Carolina, and the western United States. A least-squares for e x p r e s s i o n y=a+bx least-squares line for the expression y=a+bx...

A Note on 'A Procedure for Computing the Lattice Constants of Some Crystal Systems by Chan (1976)'

Y. H. Lye

Geological Society of Malaysia (GSM)

... and then solving them by the method of least squares. The normal equation derived are transformed into matrix notation and are solved by using Gauss...

Satellite Magnetic Anomalies over Southeast Asia

G. Van Klinken, C. Y. Lee, M. H. Loke

Geological Society of Malaysia (GSM)

... and ionosphere .the data set has been significantly trimmed and corrected in a manner described by Regan, et aZ (1975). In addition, a linear least...

Rock Temperatures and Depths to Normal Boiling Point of Water in the United States

H. Cecil Spicer

AAPG Bulletin

...-line equation, [EQUATION] which have been obtained for each location given in the table by making a least-squares adjustment of the straight line...

Grain Size Measurement in Thin Section and in Grain Mount: NOTES

Richard E. Smith

Journal of Sedimentary Research (SEPM)

... of the slope, for the length of the "a" axis measured in thin section and grain mount obtained by the method of least squares is: Y = .719 + .791 X (9) where Y...

Theory and Methodology for Seismic Texture Analysis: Implications for Seismic Facies Visualization and Interpretation

Dengliang Gao

GCAGS Transactions

... with the model by calculating regression gradient based on a linear least-squares regression analysis. To minimize the impact of phase of wiggle traces...

Comparison of the Descriptors of Sediment Grain-Size Distributions: DISCUSSION

Basanta K. Sahu

Journal of Sedimentary Research (SEPM)

... for computation of Edgeworth's estimators by nonlinear least squares method will be great and in view of the inaccuracies of sieve data (as pointed out in A above...

COMPUTER TECHNOLOGY

Brian Shaw

Journal of Sedimentary Research (SEPM)

... is a difficult problem that has not found a completely satisfactory olution. Two methods, maximum likelihood calculations and non-linear least squares, have...

Utility of Mechanical Facies for Rock Classification, Characterization, and Correlation: Reservoir Characterization: Petrophysical Formation Evaluation and Rock Description

K. A. Alhilali, G. Shanmugam

AAPG Special Volumes

... reflect the different composition and matrix structure of each group, which they often do, then estimates of porosity, based on a least-squares line...

Relation Between Chlorinity and Conductometric Salinity in Black Sea Water: Water

Klaus Kremling

AAPG Special Volumes

...)] Inserting the values from Table 1 and using the method of least squares, we can calculate b and a: b = 1.8128 and a = 0.0002. The standard deviation...

Approximation of Geothermal Gradients in Northern West Virginia Using Bottom-Hole Temperatures from Electric Logs: GEOLOGIC NOTES

T. W. Grisafi , H. H. Rieke, III , D. R. Skidmore

AAPG Bulletin

... least-squares fit the coefficients of a seventh-degree polynomial. A high-degree polynomial was deemed desirable so that results from later...

Improved Statistical Method for Assessment of Undiscovered Petroleum Resources

David J. Forman, Alan L. Hinde

AAPG Bulletin

... of field size (for fields of the same rank) plotted against discovery number. The average straight line has been fitted to the data by the least-squares...