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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,630 documents.
Well Productivity Analysis of the Bakken Shale Play
Emilian R. Vankov, Svetlana Ikonnikova, Gurcan Gulen, Kenneth Medlock
Unconventional Resources Technology Conference (URTEC)
... process associated with equation (2) has a constant mean and variance, we can use ordinary least squares to estimate all parameters. As previously discussed...
2017
The Application of Dielectric Logs to the Recognition of Oil Versus Water-Wet Reservoirs and in the Determination of Relative Permeabilities
Ivan D. Pinzon, G. B. Asquith
West Texas Geological Society
... textural parameter W (W=m=n) for each well with a dielectric log using least squares summation (Pinzon, 1993). It was necessary to derive W values...
2020
The Application of Dielectric Logs to the Recognition of Oil Versus Water-Wet Reservoirs and in the Determination of Relative Permeabilities
Ivan D. Pinzon, G. B. Asquith
West Texas Geological Society
... textural parameter W (W=m=n) for each well with a dielectric log using least squares summation (Pinzon, 1993). It was necessary to derive W values...
1994
On the stability of stress inversions from earthquake mechanisms and choosing the fault plane
Adam M. Baig, Sepideh Karimi, Aaron Booterbaugh
International Meeting for Applied Geoscience and Energy (IMAGE)
...://doi.org/10 .1029/97JB01274. Tarantola, A., and B. Villotte, 1982, Generalized nonlinear inverse problems solved using the least squares criterion...
2024
Use of Gravity Meter in Search for Stratigraphic Traps: Geologic Exploration Methods
Craig Ferris
AAPG Special Volumes
..., Theory of errors and least squares: New York, Macmillan, p. 155. Yungul, S. H., 1961, Gravity prospecting for reefs: the effects of sedimentation...
1972
Resolving DAS versus geophone discrepancies using the DAS transform: A comparative study from the CaMI CCS field research station, Alberta
Ali Sayed, Robert R. Stewart, Marie Macquet, Don Lawton
International Meeting for Applied Geoscience and Energy (IMAGE)
... High-resolution imaging using least-squares migration in the image domain (LSMi) for a marine distributed acoustic sensing (DAS) 3D-VSP: Third International Me...
2024
The Slotted Cone Splitter
F. J. Flanagan, R. C. Kellagher , W. L. Smith
Journal of Sedimentary Research (SEPM)
... (12,20) = 2.28, there is no evidence that the interaction is significant. The interaction and the within sums of squares and their degrees of freedom...
1959
Inversion of Salt Diapir and Sedimentary Bed Observations: A Gulf Coast Case History
K. Petersen, I. Lerche
GCAGS Transactions
... is chosen that provides the best least squares fit to that criterion. The evolution is modeled only back to the time of deposition of horizon F due...
1993
Two Inversion Case Studies from the SCOOP and STACK Area of Oklahoma
Satinder Chopra, Ritesh Kumar Sharma, James Keay
Unconventional Resources Technology Conference (URTEC)
... at these angles are then generated, compared with the real data and the error between them is then minimized in a least squares sense. The output from...
2019
In Situ Logs of Gas Composition of CO2-ECBM Trial in Buchanan County, Virginia, with Downhole Reservoir Raman System
Grant A. Myers, Alec Cookman, Nino Ripepi
Unconventional Resources Technology Conference (URTEC)
... of carbon dioxide Raman response to pressure; (a) background-subtracted carbon dioxide doublet for the range of pressures indicated; (b) linear least...
2019
Rock Magnetic Determination of Angular Deviation in Grain Alignment Between Channel and Levee Sandstones Within a Submarine Fan Channel-Levee Complex, Brushy Canyon Formation, West Texas
Debnath Basu
GCAGS Transactions
... that the anisotropy is measured with sufficient redundancy and the best fit anisotropy tensor was determined using a least squares method. The tensor...
1995
Continental Oceanic Crustal Transition in the Gulf Coast Geosyncline: Rifted Margins: Field Investigations of Margin Structure and Stratigraphy
Abou-Bakr K. Ibrahim , Elazar Uchupi
AAPG Special Volumes
... the first ground arrivals were used in the analyses. Data from the travel time curves were fitted by the least squares method, and the inverse slope...
1982
Event Sedimentation and Long-Term Accumulation in a Salt Marsh: St. Louis Bay, Mississippi
Lawrence A. Febo, Triniti A. Dufrene, Dana A. Watzke, Samuel J. Bentley
GCAGS Transactions
... negligible bioturbation in basal core sections, with a least-squares fit of the following equation to the data: Az=Ao exp (z/s) where Az equals activity...
2003
Quantitative Statistical Analyses of Columbia River Sediment Samples
James C. Kelley, John T. Whetten
Journal of Sedimentary Research (SEPM)
... samples from the Columbia reservoirs and from the Snake River were included in the analysis. Least squares polynomials to the fourth order were computed...
1969
An Approach to Joint Roughness Measurement in Rock A Comparative Study
Mohd For Mohd Amin, Teo King Beng, Mushairry Mustaffar, Ho Chin Kun, Loh Tar Her
Geological Society of Malaysia (GSM)
..., 1996. Least Squares Matching: A the area of contact during shear. This is shown Fundamental Measurement Algorithm. In: KB. Atkinson (Ed.), Close...
2001
EXTENDED ABSTRACT: Conforming and Non-Conforming Sands - An Organizing Framework for Seismic Rock Properties
Young, Roger A. and LoPiccolo, Robert D.
GCAGS Transactions
..., muted, moved-out, and migrated set of gathers is analyzed on a sample-by-sample basis. A least-squares, best-fit line is fitted to the amplitudes...
2004
Inexpensive Dual Beam Turbidimeter
Cathie Lubell, Thomas Barry, Edward Brody, Gregory Hearn
Journal of Sedimentary Research (SEPM)
... that the turbidity is reproducible to 5%. Of course, a least squares fitting procedure could be employed to determine the slope and more pathlengths could...
1973
Theory of Nuclear Transmission Densitometry Applied to Sedimentology and Geotechnology
Peter V. Meyers, Wesley J. Van Sciver, Adrian F. Richards
Journal of Sedimentary Research (SEPM)
... relationship with -1sat given in m3/kg. The line intermediate between m = 2500 and 2900 kg/m3 is a computer-drawn least squares fit to the 1680 data...
1974
Ferro-Magnesian Calcite Cement in Sandstones
A. Jack Nash, Edward D. Pittman
Journal of Sedimentary Research (SEPM)
... spectrographic analyses, which were made on some samples for comparison, showed relatively good agreement with atomic absorption measurements. A least squares...
1975
The Threshold of Grain Motion Under Oscillatory Flow in a Laboratory Wave Channel
John R. Dingler
Journal of Sedimentary Research (SEPM)
... increase the variability of Equation 10 when it is tested by the least-squares method). Komar and Miller (1973; 1975a,b) state that the threshold relation...
1979
Soft soils: A study on their electrical resistivity values and geotechnical properties (porosity, SPT and particle size distribution)
Najmiah Rosli, Rosli Saad, Nazrin Rahman, Nur Azwin Ismail
Geological Society of Malaysia (GSM)
... an existing borehole. The measured 2-DRI data was then subjected to least-squares inversion in conjunction with a smooth constraint to obtain true...
2020
Introduction to Contouring Geological Data with a Computer: Part 8. Integrated Computer Methods
J. L. Gevirtz
AAPG Special Volumes
... that are taken in groups of three and fitted exactly to a plane using a least squares or bicubic spline methods. The grid node estimate is obtained by averaging...
1992
Dolomitization in Chalk from the North Sea Central Graben
Niels Oluf Jorgensen
Journal of Sedimentary Research (SEPM)
... by least-squares analyses of X-ray powder data obtained with a Guinier camera. Stable-isotope analyses were limited to bulk samples because the grain...
1983
Pore Structure in Sandstones by Compressible Sphere-Pack Models
I. Fatt
AAPG Bulletin
... assumption must be considered as applying to an ideal porous medium to which sandstones may approach. Curve 1 in Figure 5 is the least squares fit...
1958
X-Ray Computed Tomography: A Nondestructive Method for Quantitative Analysis of Sediment Cores: RESEARCH METHOD PAPER
Thomas H. Orsi , Carl M. Edwards , Aubrey L. Anderson
Journal of Sedimentary Research (SEPM)
...-density variations of the studied core. The regression line was determined by least-squares analysis and is defined by Eq 6. The correlation...
1994