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The AAPG/Datapages Combined Publications Database
Showing 23,320 Results. Searched 195,387 documents.
Quantification of thermal conductivity uncertainty for basin modeling
Patrick Elison, Jan Niederau, Christian Vogt, and Christoph Clauser
AAPG Bulletin
... ensemble of temperature fields with a significantly reduced standard deviation. To verify our approach, we use five characteristic scenarios from...
2019
Drilling Optimization: RSS Solution of Vertical Well Trajectory for Cost Savings and Macro Tortuosity Elimination Case Study: Lofin-2, Seram Island
Raynaldo Panjaitan, Boyke Daud Sibarani
Indonesian Petroleum Association
...: ∑ ∆ …………………...…….(3) RESULTS TORTUOSITY- DOGLEG SEVERITY ANGLE ANOMALIES By generating dogleg severity standard deviation, in figure 4 we will see...
2016
Grain Size Geostatistics Enhance Reservoir Characterisation; #50956 (2014)
Robert Duller, Ricki Walker, and Barrie Wells
Search and Discovery.com
... and on the other a measure of variance or standard deviation. However, since the latter is effectively the expected value of the former, this could be seen...
2014
The Determination of Potassium in Oil Field Brines by Atomic Absorption Spectrometry: GEOLOGICAL NOTE
G. K. Billings
CSPG Bulletin
.... The average deviation of the flame photometric values from the standard-addition values was ± 10% of the amount present as determined by standard...
1965
Regional Geochemical Baselines in Soils of the Powder River Basin, Montana-Wyoming
Ronald R. Tidball, Richard J. Ebens
Wyoming Geological Association
.... This range in concentration may be estimated by use of the average and the standard deviation of the observed concentrations. Various definitions...
1976
Origins of Florida Panhandle Terrace Sands
James William F. Tanner , H. Balsillie , Holly K. Williams
GCAGS Transactions
...; J.P.M. Syvitski, ed.; Cambridge Univ. Press, p. 283-292. Figure 3. Cross-plot of the variability (standard deviation) of the sample standard...
1998
Abstract: Elongate Concretions in Sandstone: Evidence of Ancient Flow Directions in Groundwater, by E. F. McBride, M. D. Picard, and R. L. Folk; #90993 (1993).
Search and Discovery.com
1993
Abstract: Introducing a Big Data System for Maintaining and Controlling SEG-Y Data Quality and Integrity in a Continuously Growing Digital Environment; #90319 (2018)
Abdulelah Bin Mahfoodh, Mohamad A. Ibrahim, Maan Hawi, Nasir Seadi
Search and Discovery.com
... software, transmission, human factors, etc. This deviation from standard format makes it difficult for SEG-Y files to be processed further. In order...
2018
Abstract: A Faster, More Accurate Gaussian Simulation; #90172 (2014)
Colin Daly, Sandra Quental, Darcy Novak
Search and Discovery.com
... porosity was 0.15 with standard deviation of 0.05. 3 AAPG Search and Discovery Article #90172 © CSPG/CSEG/CWLS GeoConvention 2010, Calgary, Alberta...
2014
Plastic Spray Thin Section Cover
Mounir T. Moussa
Journal of Sedimentary Research (SEPM)
... with all the precision thin section equipment available on the market today, the standard cover glass has to be mounted manually, a process that requires...
1976
Evaluation of a Conceptual Model for the Transverse Sediment Transport System of a Coastal Barrier Chain, Middle Atlantic Bight
Gerald L. Shideler
Journal of Sedimentary Research (SEPM)
... permitted derivation of the four moment measures (mean, standard deviation, skewness, kurtosis). The moment measures served as the basis...
1973
The Use of Statistical Methods in Effecting Improvements on a Jones Sample Splitter
George H. Otto
Journal of Sedimentary Research (SEPM)
... of the standard deviation (FOOTNOTE 1) of the values. The practical importance of this property of an efficient sample splitter is as follows: Suppose...
1937
Fractures in the Mesaverde Group at Somerset Coal Field, Delta andGunnison Counties, Colorado
Christopher James Carroll
Rocky Mountain Association of Geologists
... 18 90 2 4 6 8 10 N = 76 Class Interval = 10 Degrees Maximum Percentage = 18.4 Percent Mean Percentage = 7.1 Percent Standard Deviation = 5.77...
2003
The Significance and Limitations of Statistical Parameters for Distinguishing Ancient and Modern Sedimentary Environments of the Lower Georgia Coastal Plain
John R. Hails, John H. Hoyt
Journal of Sedimentary Research (SEPM)
... (and sometimes FIG. 2. Plot of first moment (mean) and standard deviation for barrier island and lagoon-salt marsh samples collected from the six Pleistocene...
1969
Grain-Size Statistics II: Evaluation of Grouped Moment Measures
Davis Swan , John J. Clague, John L. Luternauer
Journal of Sedimentary Research (SEPM)
... are smallest for the standard deviation and mean, and are largest for kurtosis. In general, the accuracy of the statistical parameters increases...
1979
Abstract: Orientation Analysis of Borehole Geophones in Vertical and Deviated Wells: Calibration Consistency; #90174 (2014)
Peter G. Gagliardi and Don C. Lawton
Search and Discovery.com
.... Orientation azimuths, using all three lines, had an overall standard deviation of 4.39°. Orientation azimuth consistency was poorest for the mid...
2014
Reservoir resistivity assessment, best practices, and pitfalls
Daniel Baltar
International Meeting for Applied Geoscience and Energy (IMAGE)
... distribution with known average saturation and standard deviation of the saturation. Archie can be applied to each point and then the resulting...
2023
Choosing the Best 3D Seismic Dataset for Reservoir Interpretation: A Case Study in Tunu Shallow Zone, Mahakam PSC, Indonesia
Teuku Reiza Yuanda, Rangga A. Brahmantio
Indonesian Petroleum Association
... of relative phase-shift between sub-stacks for the chosen interval. For each of these maps, the standard deviation value is taken to quantify the stability...
2012
East Shetland Platform Petroleum Geochemistry and Prospectivity; #30462 (2016)
Arka Dyuti Sarkar, James Armstrong
Search and Discovery.com
... of statistical tests on biomarker variability posited a possible link between contamination and the observed standard deviation in the measurements...
2016
A Practical Guide to the Construction of Bivariate Scatter Diagrams
Richard B. McCammon
Journal of Sedimentary Research (SEPM)
... deviation for y and sx is the observed standard deviation for x. Many will recognize this as the reduced major axis defined in biometry for expressing...
1976
Shallow Marine Currents on the Early (?) Triassic Wyoming Shelf
M. Dane Picard, Lee R. High, Jr.
Journal of Sedimentary Research (SEPM)
... of paleocurrent directions that occur in each sector are noted. The mean number of occurrences per sector and the standard deviation are calculated. Those...
1968
Estimation of Single-Phase Permeability from Parameters of Particle-Size Distribution
Manmath N. Panda, Larry W. Lake
AAPG Bulletin
... that permeability now depends on porosity ^phgr, tortuosity ^tgr, mean grain size Dp, standard deviation ^sgr, and skewness ^ggr^sgr. Using equations 2b and 3, we...
1994
ABSTRACT: THE EFFECT OF UBC PROCESS ON COAL PETROGRAPHIC CHARACTERISTICS
Bukin Daulay, A.C. Cook, Eiichiro Makino
The Society for Organic Petrology (TSOP)
... – 0.44%) with 0.039 standard deviation. Raw coal oven dried shows a rise vitrinite reflectance results to a mean value of 0.43% (0.32 – 0.51...
2006
Petroleum Fields of Japan with Volcanic-Rock Reservoirs--Summary: Hydrocarbons
T. Katahira, M. Ukai
AAPG Special Volumes
... gas field, the standard deviation of reservoir pressure, obtained from a survey made in October 1971, is 4.72 kg/cm2. Because this gas-condensate...
1976
Estimating Natural Gas Reserves
Raymond W. Miller
Panhandle (Texas) Geological Society
... AIME Petroleum Transactions, March 1945 Deviation of Natural Gas from Ideal Gas Laws by G. G. Brown, Clark Bros. Co., Olean, New York Effect...
1954