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The AAPG/Datapages Combined Publications Database
Showing 23,327 Results. Searched 195,456 documents.
Abstract: Estimating Geochemical Anomaly Thresholds and Quantifying Anomaly Contrast for Near Surface Petroleum Exploration with Probability Plot Analysis, by J. V. Fontana; #90946 (1997).
Search and Discovery.com
1997
Understanding Uncertainty in Pore Pressure Prediction
Search and Discovery.com
N/A
Probabilistic Approach to Development Drilling Decisions in Low Permeability Gas Reservoirs
Robert S. Thompson, Clark Huffman
Wyoming Geological Association
... in terms of the average outcome for the parameter but also in terms of the project risk expressed as the standard deviation of the distribution...
2001
The Non-normal Distribution of Intermittent Suspension Sediments Below Breaking Waves
Stephen K. Kennedy, Robert Ehrlich, Timothy W. Kana
Journal of Sedimentary Research (SEPM)
... waves. No consistent trend of mean or standard deviation was found with height. Grain size histograms show that most samples were not normal...
1981
2009
ABSTRACT: Quantification of Uncertainty in Gas Resources of Deep Panuke; #90013 (2003)
CLAYTON DEUTSCH, RICHARD WIERZBICKI, ROBERT RIDDY, JOHN SLADE
Search and Discovery.com
... the base surface is modeled with a Gaussian histogram with standard deviation of 10 m in the backreef area and 30 m in the reef area; the additional...
2003
The Influence of Areal Trends on Correlations Between Sedimentary Properties
W. C. Krumbein, Thomas A. Jones
Journal of Sedimentary Research (SEPM)
... relation between mean and standard deviation, which implies that the areal pattern of the one may be largely controlled by the environmental response...
1970
Grain-Size Characteristics of Sediment Transported During Dust Storms
W. G. Nickling
Journal of Sedimentary Research (SEPM)
... The sediment samples transported in surface creep range in mean size from 2.83 to 3.88 and in general are rather poorly sorted (standard deviation range...
1983
Olympus challenge: With Great Power Comes Great Responsibility
Alberto Diaz, Alexandra Kidd, Andrey Volkov, Dmitry Eydinov
GEO ExPro Magazine
..., allowing the user to search and optimise the ensemble in relation to maximising mean NPV or minimising standard deviation (STD), or a combination of both...
2019
Grain-size Parameters and Paleoenvironments of the Nubia Sandstone
S. Omara, Wagih W. Bishara, M. Nasr
Journal of Sedimentary Research (SEPM)
... of mean size versus inclusive graphic standard deviation resulted in a considerable overlap of the three environments due to the extremely small range...
1974
Quantitative Interpretation of Sedimentary Structures Formed by River Dunes
Suzanne F. Leclair, John S. Bridge
Journal of Sedimentary Research (SEPM)
... of the height distribution. The theoretical mean value of s is 1.64493/a, and the standard deviation is 1.44997/a (Paola and Borgman1991). Paola...
2001
Borehole Image-Based Aperture Characterization to Identify Primary Versus Secondary Fracture Opening, #42186 (2018).
Kajari Ghosh, Nicholas Harvey, Robert Gales
Search and Discovery.com
... variation along the trace can have a wide range with high standard deviation or a narrow range with a low standard deviation. Using this method...
2018
Variability of Zircons from the Sharon Conglomerate Of Northeastern Ohio: DISCUSSION
Peter K. Harvey, Colin C. Ferguson
Journal of Sedimentary Research (SEPM)
... = 0.0 and standard deviation = 0.4. The shape of this distribution is shown in Fig. la, and histograms of 10 sample sets are shown in Fig. 2a-j; each...
1977
Louisiana Cheniers: Settling from High Water
William F. Tanner
GCAGS Transactions
..., the settling component increases. Louisiana cheniers have a very high kurtosis (10), and a standard deviation of kurtosis (9.5) far higher than any...
1993
Real-Time Drilling Optimisation Driving Drilling Excellence
Abhijit Barhate, Piyush Patel, Egil Abrahamsen
Australian Petroleum Production & Exploration Association (APPEA) Journal
... average of the rotational friction steady-state points. The red shadow band shows the standard deviation of the rotational friction running average...
2019
Determination of Calcite and Dolomite Composition Using the Air Comparison Pycnometer
Donald H. Zenger
Journal of Sedimentary Research (SEPM)
... (standard deviation) of the density determination is 0.0028. Replicate weighings, volume determinations, and density calculations are done within 5 minutes...
1968
Downhole Gravity Gradiometry: A New Technique for Prospect and Reservoir Modeling?, #40545 (2010)
Markus H. Krieger, Peter L. Smilde, Oliver K. Geisler, Stefan Hossfeld
Search and Discovery.com
... at base of salt surface • Each node controls the triangulated surface in its neighborhood • A-priori standard deviation (SD) is set to 1000 m...
2010
Abstract: A Novel Method for Analysis, Prediction and Control of Directionally Drilled Wellbores using Mechanical Specific Energy; #90239 (2015)
Sam Noynaert
Search and Discovery.com
... in this paper, a system has been developed which allows for accurate prediction of the rate of change of wellbore deviation while a drillstring is being...
2015
Size Frequency Distributions of Sediments and the Normal Phi Curve
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
... and the phi standard deviation. Simple analytic and graphic methods are described for testing data for normalcy. Finally, some of the theoretical...
1938
Determining the Channel Sinuosity of Ancient Fluvial Systems from Paleocurrent Data
J.P. Le Roux
Journal of Sedimentary Research (SEPM)
... directions within the meander-belts and the actual sinuosity of the active river channels. A value of 3.2 times the standard deviation gave the best...
1992
Fluid Heterogeneity on a Well-Box Scale in Tight Unconventional Reservoirs
Curtis H. Whitson, Fahd Alqahtani, Ellie Chuparova
Unconventional Resources Technology Conference (URTEC)
... be populated in a numerical model using (1) a statistical distribution defined by a mean and standard deviation for a given variable, (2) an assumed...
2018
Determining the Channel Sinuosity of Ancient Fluvial Systems from Paleocurrent Data: DISCUSSION
Torben Olsen
Journal of Sedimentary Research (SEPM)
.... KRAUSE, R.G.F. AND GEIJER, T.A.M., 1987, An improved method for calculating the standard deviation and variance of paleocurrent data: Journal...
1993
On the Problem of n in Weight Frequency Distributions: NOTES
Nils Meland, J. C. Ferm, J. O. Norrman
Journal of Sedimentary Research (SEPM)
...------------------------ sample weighing 100 grams has been sieved and the standard deviation estimated as 2 . The weight of the largest grain is estimated...
1965
A Simple Method for Determining Calcium Carbonate in Sediment Samples
B. J. Presley
Journal of Sedimentary Research (SEPM)
... in increments of 5 mm and thus easily readable to 1 mm (Matheson Gas Products, Model 63-5601). It is connected to two brass valves by a standard inch...
1975
Grain-Size and Moment Measures: A New Look at Karl Pearson's Ideas on Distributions
Samuel D. Leroy
Journal of Sedimentary Research (SEPM)
... by standard deviation. These terms have no simple geometric meaning without reference to some specific mathematical system. The location of a point...
1981