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The AAPG/Datapages Combined Publications Database
Showing 23,326 Results. Searched 195,452 documents.
Determination of Calcite, Dolomite, Quartz and Clay Content of Carbonate Rocks
Frank E. Diebold, John Lemish, Carl L. Hiltrop
Journal of Sedimentary Research (SEPM)
... due to inaccurate X-ray calibration curve. The third method, an internal standard technique, was established and calibration curves with confidence...
1963
Regional Variation in Microscopic and Megascopic Reservoir Heterogeneity in the Smackover Formation, Southwest Alabama
David C. Kopaska-Merkel, Steven D. Mann
GCAGS Transactions
... Intervals (by well) Standard Deviation of Number of Reservoir Intervals (by well) Standard Deviation of Porosity Mean Permeability Standard Deviation...
1992
A Reconnaissance Survey of the Cover Sands in the Republic of Botswana
Thomas A. Baillieul
Journal of Sedimentary Research (SEPM)
..., standard deviation, skewness, and kurtosis by Folk's graphical method. Later, a Hewlett-Packard 9810A calculator became available and a statistical...
1975
Statistical Analysis of Ripple Marks in Atokan and Desmoinesian Rocks in the Arkoma Basin of East-Central Oklahoma
F. P. Agterberg , Garrett Briggs
Journal of Sedimentary Research (SEPM)
... marks only. These parameters are the average current direction and the standard deviation. It is, for instance, apparent without a statistical analysis...
1963
Trend Surface Analysis of Trace Chemical Data, Park City District, Utah
M. P. Nackowski, Charles A. Mardirosian, Joseph M. Botbol
Utah Geological Association
... of the analytical procedure was established by replication of one randomly selected soil sample. The analytical precision, stated as the percent standard deviation...
1968
A statistical approach to assessing relief on mesophotic banks: Bank comparisons and geographic patterns
Paul W. Sammarco, Lance Horn, Glenn Taylor, Daniel Beltz, Marissa F. Nuttall, Emma L. Hickerson, and G. P. Schmahl
Environmental Geosciences (DEG)
... on a remotely operated vehicle, with resolution of approximately 0.5 m (2 ft). Average and standard deviation of relief were calculated at the transect, drop...
2016
Multi Mineral Analysis to Determine Petrophysical Properties of Carbonate Reservoir in Diamond Field, Central Sulawesi Basin
Annisa Cinintia Finahsan, Muharram Jaya Panguriseng, Syamsu Rosid
Indonesian Petroleum Association
... of the petrophysical properties analysis from multi-mineral modeling in this study are valid and proven by a deviation standard value of 2.47% for porosity and 5...
2014
Abstract: Resolution and Location Uncertainties in Surface Microseismic Monitoring; #90174 (2014)
Michael Thornton
Search and Discovery.com
..., Canada Figure 2: Standard deviation of positional errors as a function of SNR after migration. Figure 2 shows the standard deviations of positional...
2014
Abstracts: Advances in SGL AIRGrav Acquisition and Processing; #90173 (2015)
Luise Sander and Stephen Ferguson
Search and Discovery.com
... using the enhanced method shows better repeatability for all test lines. The average standard deviation for the test lines processed using standard...
2015
Advanced Machine Learning Methods for Prediction of Fracture Closure Pressure, ClosureTime, Permeability and Time to Late Flow Regimes From DFIT
Mohamed Ibrahim Mohamed, Dinesh Mehta, Mohamed Salah, Mazher Ibrahim, Erdal Ozkan
Unconventional Resources Technology Conference (URTEC)
... independently on the features in the training set by computing the relevant statistics on the samples. Standard deviation and mean are then stored...
2020
Optimizing PSC With New Approach of Dynamic Split Determination to Mitigate Uncertainty in The Development Phase
Yogie Fikri Adriansyah, Amega Yasutra, Utjok W.R. Siagian
Indonesian Petroleum Association
... to bring higher IRR. The application of this fiscal optimization method could minimize the standard deviation of contractor IRR. It will solidify...
2022
Problem Areas in Interpretation of Pressure Measurements in Thin and Multi-Layered Reservoirs
C. Fraisse, B. Simon, B. Seto, D. Nardio, J. Pouzet, Y. Grosjean
Indonesian Petroleum Association
... can therefore be considered as a reasonable estimation of the standard deviation related to a given pressure measurement (assuming a Gaussian...
1987
Statistical Study of Accuracy of Some Connate-Water Resistivity Determinations Made from Self-Potential Log Data
M. R. J. Wyllie
AAPG Bulletin
... of the total sodium ion End_Page 1897------------------------------ A. STANDARD DEVIATION, MEAN AND MEDIAN FOR RESULTS IN TABLES I AND II All 39 results...
1949
Modeling the Effect of Borehole Orientation on Stereonets; #42066 (2017)
Charles R. Berg
Search and Discovery.com
... Original Data ~200 Fractures 0 340 350 10 340 0 33 20 0 32 90 0 Deviation degrees 40 20 80 40 0 32 40 70 10 Fracture (and Bedding) Dip...
2017
Recognition of Fluvial Environments in the Biyadh-Wasia Sandstones (Lower-Middle Cretaceous) as Revealed by Textural Analysis
Mohamed A. Moshrif
Journal of Sedimentary Research (SEPM)
...), standard deviation (I), skewness (SKI), and kurtosis (KG) have been calculated from the cumulative curves, using the formulae devised by Folk and Ward...
1980
Application of Logarithmic Moments to Size Frequency Distributions of Sediments
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
..., 1924, describes the method of finding the arithmetic mean on p. 118, and the standard deviation on p. 156, in the first 6 columns of the table...
1936
Methane, Ethane, and Propane Concentrations in Gulf of Mexico: GEOLOGICAL NOTES
D. J. Frank , W. Sackett , R. Hall , A. Fredericks
AAPG Bulletin
... samples showed a ^sgr standard deviation of 0.8×10-5, 0.4×10-6, and 0.04×10-6 ml/liter for methane, ethane, and propane, respectively. The standard gas...
1970
Fiber-Optic Monitoring: Stimulation Results From Unconventional Reservoirs
Eric Holley, Nitika Kalia
Unconventional Resources Technology Conference (URTEC)
... to fracture rate, cluster spacing or design, etc. The only normalization discussion is for the standard deviation results, which are normalized to the target...
2015
Grain Orientation in a Berea Sandstone Channel at South Amherst, Ohio
Gene W. Lene, Donald E. Owen
Journal of Sedimentary Research (SEPM)
... (standard deviation = 18.8 degrees) with a mean magnitude of 17.7% was obtained for the imbricated, horizontally oriented grains. This direction is in good...
1969
Gas Carbon Isotopic Composition Implications on Well Productivity and Thermal Maturity in the Closed System of Duvernay Fm., Western Canada Sedimentary Basin
Gabriela Gonzalez Arismendi, Luis E. Valencia, Karlis Muehlenbachs, Austin Springer, Adam Vigrass, Ryan Macauley
Unconventional Resources Technology Conference (URTEC)
...‰ and standard deviation of ± 2.1‰ (Table 1). Methane from most samples narrowly fall within the -40 to -45‰, which can be attributed to generation...
2023
Rock Volume and Pore Volume Data for Plains Region of Western Canada Sedimentary Basin Between Latitudes 49° and 60° N
Brian Hitchon
AAPG Bulletin
... printing and no printing, and the standard deviation of the conversion constant used to convert the weight to the true area was determined...
1968
A Theoretical Curve for Statistical Analysis of Sediments
E. Alan Lohse
Journal of Sedimentary Research (SEPM)
... commonly used (the median, deviation, skewness, and kurtosis) are likewise obtained or readily computed. Several of the moment measures are indicated also...
1955
AAPG Archie Series, No. 1, Chapter 12: Low-resolution Techniques
Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia
AAPG Special Volumes
...% and standard deviation 1% -- a much more tightly constrained initial distribution. In the Monte Carlo inversion, random samples (realizations...
2006
Uncertainty Analysis of the Vertical Aquitard Hydraulic Conductivity in a Leaky Aquifer System
Xun-Hong Chen
Environmental Geosciences (DEG)
...ithm to evaluate the reliability of the parameter estimation. For example, the standard deviation of a parameter can be calculated using the sensiti...
1997
Directional Features of an Experimental Turbidite Fan a Report of Progress
Monty A. Hampton, Ivan P. Colburn
Journal of Sedimentary Research (SEPM)
...). Other studies, however, show a deviation in these directions. Spotts (1964) found a rather consistent 40° clockwise deviation of preferred sand grain...
1967