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The AAPG/Datapages Combined Publications Database
Showing 1,463 Results. Searched 196,121 documents.
The Effects of Seismic Data Conditioning on Pre-Stack Simultaneous Impedance Inversion
Scott W. Singleton
GCAGS Transactions
... Taner, takes the “statics-based” approach (Taner, 2004). It minimizes a least-squares error in a reflector by determining a local statics shift...
2008
Testing Hydrocarbon Saturation Models For Use in Original Oil-in-Place Estimation: South Dome of Oregon Basin Field, Park County, Wyoming: Chapter 9
Michael J. Heymans, Douglas A. Steed, David E. Hamilton, Barbara A. Pavlov
AAPG Special Volumes
... decreases. A least-squares fit line drawn through data points on a plot of the logarithm of absolute permeability versus porosity is a common tool...
1992
The Age of Illite Cement Growth, Village Fields Area, Southern North Sea: Evidence from K-Ar Ages and 18O/16O Ratios
A. G. Robinson , M. L. Coleman , J. G. Gluyas
AAPG Bulletin
... 14 shows the data for Ravenspurn North, Cleeton, and Hyde field illites plotted on such a isochron diagram. The best-fit, unweighted, least squares...
1993
Quantitatively evaluating the sources of taphonomic biasing of skeletal element abundances in fossil assemblages
Jason R. Moore, David B. Norman
PALAIOS
... of simple linear regression. Simple linear regression is also known as ordinary least squares (OLS) regression. OLS regression is a bivariate...
2009
Eastern Boulder-Weld fault zone, Colorado: A gravity slide with pop-up structures
Richard H. Groshong, Jr., Ken Kittleson
Rocky Mountain Association of Geologists
...). The best-fitting line is found by least squares and the inverse slope of the line is the displacement that formed the structure. The linear...
2020
BIBLIOGRAPHY OF THESES AND DISSERTATIONS ON UTAH, BY ALL INSTITUTIONS, 1968 - 1979
Michael W. Hansen, Cheryl L. Kirk, William J. Byrd, Robin L. Dow, Joseph R. Lukas, Kathy A. Barrie
Rocky Mountain Association of Geologists
...), northcentral Utah: Univ. Utah, Salt Lake City, Utah, Masters thesis. Buttgereit, CD., 1968, A study of the least squares method of polynomial fitting: Univ...
1980
Stratigraphic Rule-based Reservoir Modeling
Michael J. Pyrcz, Richard P. Sech, Jacob A. Covault, Brian J. Willis, Zoltan Sylvester, Tao Sun
CSPG Bulletin
...: Springer, p. 249. Satija, A. and Caers, J. 2015. Direct forecasting of subsurface flow response from non-linear dynamic data by linear least-squares...
2015
Fast Probabilistic Forecasting of Oil Production using Monte Carlo Simulations on Data Driven Acquisition of Decline-Curve Parameter Distributions
V.B.K. Chavali, W. J. Lee
Unconventional Resources Technology Conference (URTEC)
... that rely on clean data as well a simple least squares method to fit a linear model through as much of the data as possible resulting in a bad fit and hence...
2021
Pore Networks in Holocene Carbonate Sediments
Paul Enos, L. H. Sawatsky
Journal of Sedimentary Research (SEPM)
... time are presented in Figure A-1. A simple computer program was written to obtain logarithms, plot the values, calculate the least squares fit...
1981
Estimation of kerogen porosity in source rocks as a function of thermal transformation: Example from the Mowry Shale in the Powder River Basin of Wyoming
Christopher J. Modica, Scott G. Lapierre
AAPG Bulletin
...). Dashed line is least-squares fit to data, and solid line is computed from the assumption that S2 yields are 85% carbon by weight. This assumption...
2012
Deposits of the sandy braided South Saskatchewan River: Implications for the use of modern analogs in reconstructing channel dimensions in reservoir characterization
Ian A. Lunt, Gregory H. Sambrook Smith, James L. Best, Philip J. Ashworth, Stuart N. Lane, Christopher J. Simpson
AAPG Bulletin
...). Nonlinear, least-squares fitting of equation 2 to the probability density function of dune height results in values of and of 2.134 and 0.0597...
2013
Validating novel boundary conditions for three-dimensional mechanics-based restoration: An extensional sandbox model example
Benjamin P. Chauvin, Peter J. Lovely, Joseph M. Stockmeyer, Andreas Plesch, Guillaume Caumon, and John H. Shaw
AAPG Bulletin
..., and J.-M. Morvan, 1997, A least-squares method for multisurface unfolding: Journal of Structural Geology, v. 19, no. 5, p. 735–743, doi...
2018
Recent Relative Sea-Level Change in Eastern North America
Barbara V. Braatz, David G. Aubrey
Special Publications of SEPM
... portion of the time series to a positive trend during the later portion. Based on the best fit (in a least-squares sense) of a two-segment line, this change...
1987
Crustal and Lithospheric Structure of the CarpathianPannonian Region: A Geophysical PerspectiveRegional Geophysical Data on the CarpathianPannonian Lithosphere
L. Pospil, A. dm, J. Bimka, P. Bodlak, T. Bodoky, P. Dvnyi, H. Granser, E. Hegeds, I. Jo, A. Kendzera, L. Lenkey, M. Nemok, K. Posgay, B. Pylypyshyn, J. Sedlk, W. D. Stanley, G. Starodub, V. Szalaiov, B. ly, A. utora, G. Vrga, T. Zsros
AAPG Special Volumes
... the data processing, least-squares, cross-spectral analyses were used to solve the horizontal impedance tensor transfer function. The apparent...
2006
Oceanographic Currents and the Convexity of the Uppermost Continental Slope
Neil C. Mitchell, John M. Huthnance
Journal of Sedimentary Research (SEPM)
... represent average Q for given gradient groupings (plus and gray-filled symbols only). The oblique lines are least-squares regressions of Q on gradient...
2008
Application of Precise Acoustic Positioning Techniques During the Development of the Liuhua Field in the South China Sea
John D. Hughes, Nigel C. Kelland
Southeast Asia Petroleum Exploration Society (SEAPEX)
... Field Frame The ‘as-laid’ UTM positions of the Near Field frames were determined using the variation of co-ordinates, least squares technique from...
1996
Sediment characteristics of some Nova Scotian beaches
Edward Bryant
Atlantic Geology
... are more objective and efficient, and so were used here. These techniques are based on either maximum likelihood or non-linear least squares methods...
1983
Settling Velocity and Grain Shape of Maërl Biogenic Gravel
Siddhi Joshi, Garret P. Duffy, Colin Brown
Journal of Sedimentary Research (SEPM)
... diameter. The reciprocal of convexity increases linearly with diameter. The solid line represents the least-squares fit between the reciprocal convexity...
2014
Recognition Of Deltas by Fitting Trend Surfaces to Upper Pennsylvanian Sandstones in North-Central Texas
E. G. Wermund, W. A. Jenkins Jr.
Special Publications of SEPM
... and negative residuals. The line (plane) provided by the computer program is the best possible fit in the least squares sense. This means that the sum...
1970
Building Well and Fluid-Specific Pipe Friction Curves, Monitoring Perforation Cluster Efficiency During Stimulation, and Measuring Near-Wellbore Tortuosity Using Acoustic Friction Analysis
Eric M. Dunham, Saeed Rahimi-Aghdam, Junwei Zhang, Nathan Crawford, Craig Cipolla, Michael McKimmy, John Lassek
Unconventional Resources Technology Conference (URTEC)
... parameters 𝑓! and 𝑎 were determined by nonlinear least squares regression. URTeC: 4044718 7 Figure 4. Compilation from acoustic friction...
2024
Open and Closed Number Systems in Stratigraphic Mapping
W. C. Krumbein
AAPG Bulletin
..., is a least-squares index of the linear relations between two variables. The sample variance for any measured variable (such as thickness or percentage...
1962
Clay Minerals in the Sediments of Lake Baikal: A Useful Climate Proxy
Richard Yuretich , Martin Melles , Brenn Sarata , Hannes Grobe
Journal of Sedimentary Research (SEPM)
... are not amenable to a direct statistical analysis. However, when the data are smoothed (locally weighted least-squares regression, coefficient = 0.3...
1999
Fold Geometry Within Part of Michigan Basin, Michigan
E. H. Timothy Whitten , Walter A. Beckman, Jr.
AAPG Bulletin
... the actual bedding surfaces by the familiar technique of trend-surface analysis (using the least-squares method to derive the coefficients...
1969
Geochemical Evaluation of Part of the Cambay Basin, India
A. Banerjee , K. L. N. Rao
AAPG Bulletin
... vitrinite reflectances plotted against depth for the two blocks under study. Least-squares best-fit lines for the data indicate hydrocarbon generation...
1993