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The AAPG/Datapages Combined Publications Database

Showing 1,463 Results. Searched 196,121 documents.

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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

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