Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 2,749 Results. Searched 195,387 documents.
A Critique of Methods for Comparing Heavy Mineral Suites
Edward J. Young
Journal of Sedimentary Research (SEPM)
... percentage, results in the least relative deviation. The weighted number percentage method is preferred to the weight percentage method because it involves...
1966
Averaging Predictions of Rate-Time Models Using Bayesian Leave-Future-Out Cross-Validation and the Bayesian Bootstrap in Probabilistic Unconventional Production Forecasting
Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Unconventional Resources Technology Conference (URTEC)
... of production of all wells (violet dashed line), the average least-squares estimate, and the average P10 (red line), P50 (green line), and P90 (yellow line...
2021
Comparison of Quantitative Mineral Analysis By X-Ray Diffraction and Fourier Transform Infrared Spectroscopy
Paul R. Craddock, Michael M. Herron, Susan L. Herron
Journal of Sedimentary Research (SEPM)
... are solved as a linear combination of pure-mineral standard spectra (weighted least-squares inversion or fitting) (Matteson and Herron 1993b; Herron et al...
2017
Graphical Techniques for the Analysis and Display of Logging Information: Chapter 2
John H. Doveton
AAPG Special Volumes
... interpretation in hard rock formations: Geobyte, v. 2, no. 3, p. 44-47. Etnyre, L. M., 1984a, Practical application of weighted least squares method...
1994
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 shale fractions) that are obtained in a preliminary step of the VLSA analysis by a least-squares optimization procedure. The standard deviation, minimum...
2006
Coastal Hazards and the Global Distribution of Human Population
Christopher Small, Vivien Gornitz, Joel E. Cohen
Environmental Geosciences (DEG)
... (e.g., the El Nino-Southern Oscillation or the Northern Atlantic Oscillation). The RSLR is calculated as the slope of the least squares linear...
2000
Aspects to the Resolving Power of 3D Seismic Surveys
Wolfgang Houba
Geological Society of Malaysia (GSM)
... is nearest to the bin centre should be maintained by 100 %. The other traces of same offset can be weighted according to their distance to the bin centre...
1985
Simpson (Ordovician) Sandstone and Hunton (Late Ordovician to Early Devonian) Carbonate Textures from Deep Parts of the Anadarko Basin
Barry Borak, Gerald M. Friedman
Oklahoma City Geological Society
...). Figure 3. Plots of mean vitrinite reflectance (Ro) and depth for macreal samples in the Bertha Rogers well. A. Linear least squares fit, b. Second...
1982
Auto-Control Model Building Using Machine Learning Regression for Extreme Response Prediction
Darrell Leong, Anand Bahuguni
Australian Petroleum Production & Exploration Association (APPEA) Journal
...: FHs ðh; a; m; p; kÞ ¼ 1 À exp½Àahm expðÀphk Þ ð1Þ with parameters a, m, p and k optimised via least-squares. The conditional probability density...
2020
AGES AND POSSIBLE ORIGINS OF ARCHEAN BASEMENT LITHOLOGIES FROM THE SOUTH-CENTRAL BEARTOOTH MOUNTAINS: U-PB ZIRCON AND OXYGEN-ISOTOPE EVIDENCE
Carla W. Montgomery
Montana Geological Society
.... Publ. 84, p. 45-56. York, D., 1969, Least squares fitting of a straight line with correlated errors: Earth and Plan. Sci...
1986
Trend Surface Analysis of Trace Chemical Data, Park City District, Utah
M. P. Nackowski, Charles A. Mardirosian, Joseph M. Botbol
Utah Geological Association
... fitting consist of finding the constants to the arithmetic equations such that the least-squares criterion is satisfied. In fitting a trend surface...
1968
Reconstruction of the Subsurface Reflected Wavefield on a Dense Grid from Multisensor Streamer Data
M. Vassallo, K. Eggenberger, D.J. van Manen, P. Watterson, A. Raskopin, A. Özbek
Indonesian Petroleum Association
... in output (in a least-squares sense). Generalized matching pursuit (GMP) (Özbek et al., 2010) is a technique able to jointly reconstruct and 3D deghost...
2013
Drilled Sidewall Cores Aid in Interpretation of the Tertiary Wasatch Formation, Natural Buttes Field, Utah
Michael E. Shade, Diana K.T. Hansen
Utah Geological Association
... is a measure of how accurate the input parameters are. This is accomplished utilizing weighted-least-squares error-minimization techniques. An ULTRA...
1992
Deep-Burial Diagenesis of the Hunton (Late Ordovician to Early Devonian) Carbonates in the Anadarko Basin
Gerald M. Friedman, Joseph Cattafe, Barry Borak
Tulsa Geological Society
... 4. Plot of mean vitrinite reflectance (Ro) and depth for maceral samples in the Bertha Rogers well. Linear least squares fit is shown. This plot...
1984
Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology
Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia
Indonesian Petroleum Association
... the direction of the fast velocity (Vfast), which is perpendicular to the direction of the slow velocity (Vslow). Using a least-squares inversion approach...
2014
Accuracy of Determination of Relative Gravity by Torsion Balance
Donald C. Barton
AAPG Bulletin
... error which can be calculated by the formula: FOOTNOTE 1. Mansfield Merriman, A Textbook on the Method of Least Squares, 8th ed. (1911), pp. 66-79...
1932
Ages and SR isotope systematics of Archean basementrocks from the south^central Beartooth Mountains
Carla W. Montgomery, Bruce A. Gray
Rocky Mountain Association of Geologists
...: Montana Bureau of Mines and Geology Special Publication 84, p. 45-56. York, D., 1969, Least squares fitting of a straight line with correlated errors: Earth...
1989
Synthetic Well Log Generation Using Machine Learning Techniques
Oyewande Akinnikawe, Stacey Lyne, Jon Roberts
Unconventional Resources Technology Conference (URTEC)
... or power, or interactions between input variables. The most popular estimation method for linear regression is least squares method. Least square...
2018
222Rn Levels in Kingsville, Texas, and Vicinity near an In Situ Uranium Mine
Thomas Lee McGehee, M. Rochelle Martino, Thomas Lee Harr, Anthony Samudio
GCAGS Transactions
... samples by weighted least squares: Health Physics, v. 17, p. 593. Tanner, A. B., 1980, Radon migration in the ground: a supplementary review, in Gessell...
1994
Investigation of Time-series Clustering to Forecast Wells with a Short Producing Life
Reza Khaksarfard, S. Hamed Tabatabaie, Louis Mattar
Unconventional Resources Technology Conference (URTEC)
..., subject-matter expertise and judgment. URTeC 992 3 In this work, acceptable fits are found as follows: i. The least squares error method is applied...
2019
Quantifying Proppant in the SRV Along a Fractured Well at the Hydraulic Fracturing Test Site: A Proppant Log Case Study from Permian-Delaware Basin
Debotyam Maity, Jordan Ciezobka
Unconventional Resources Technology Conference (URTEC)
... which is a non-linear decision tree with binary splits for regression. The final predictive model is composed with weighted combination of multiple...
2022
Occurrence of Strained Quartz in the Siliceous Frustules of Cultured Freshwater Diatoms
Jay M. Gregg , Susan T. Goldstein , Lester J. Walters, Jr.
Journal of Sedimentary Research (SEPM)
.... Jour. Sci., v. 267-A, p. 114-133. EVANS, W. A., JR., D. E. APPLEMAN, AND D. S. HANWERKER, 1963, The least-squares refinement of crystal unit cells...
1977
Production of Carbonate Sediments by Selected Large Benthic Foraminifera on Two Pacific Coral Reefs
Pamela Hallock
Journal of Sedimentary Research (SEPM)
... for each species were fitted to power function curves of diameter to mass by least squares fit. The resulting equations are presented in Table 1...
1981
Weibull vs. Lognormal Distributions for Fluvial Gravels
G.M. Kondolf , A. Adhikari
Journal of Sedimentary Research (SEPM)
.... (1981) and Tappel and Bjornn (1983) calculated coefficients of determination r2 values for least-squares regression lines fitted to grain-size...
2000
Determination of the stable isotope composition and total dissolved solids of Athabasca oil sands reservoir porewater: Part 1. A new tool for aqueous fluid characterization in oil sands reservoirs
Benjamin R. Cowie, Bruce James, Michael Nightingale, and Bernhard Mayer
AAPG Bulletin
... to the determination of water isotope compositions. A least-squares regression line was generated for the TDS– system, and the equation was solved using the value...
2014