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 1,451 Results. Searched 195,689 documents.
Current Uses of Computers by Exploration Geologists
J. M. Forgotson, Jr. , C. F. Iglehart
AAPG Bulletin
...: Management Science, v. 12, no. 8, p. 13-312 and p. 13-322. Peikert, E. W., 1963, IBM 709 program for least-squares analysis of three-dimensional...
1967
Clast Size and Bed Thickness Trends in Resedimented Conglomerates: Example From a Devonian Fan-Delta Succession, Southwest Poland
Szczepan J. Porebski
CSPG Special Publications
... at the 0.001 level. The data, when fitted to a straight line by least squares, taking the MCS as the independent variable, reveal some differences...
1984
A Gravity Analysis of West-Central Calcasieu Parish, Louisiana
Forrest Wilson , James A. Noel
GCAGS Transactions
... values, these points served as the input to least squares and model analysis systems. The least squares, trend surfaces, were calculated and mapped using...
1983
End-Member Feldspar Concentrations Determined by FTIR Spectral Analysis
Abigail Matteson, Michael M. Herron
Journal of Sedimentary Research (SEPM)
... FTIR spectra were constructed from sample spectra and their associated K-, Na- and Ca- feldspar concentrations using a least-squares full spectrum...
1993
Oblique Convergence During Northeast-Southwest Laramide Compression Along the East-West Owl Creek and Casper Mountain Arches, Central Wyoming
Philipp C. Molzer, Eric A. Erslev
AAPG Bulletin
... determines the directions and relative magnitudes of the principal stress axes. The least-squares algorithm of Angelier (1990), as implemented...
1995
Empirical Models for Predicting CO2 Concentrations in North Sumatra
C. M. Reaves, A. Sulaeman
Indonesian Petroleum Association
... in this format and a least-squares linear regression was run to enable comparison with the North Sumatra data. CO2 partial pressures in clastic reservoirs from...
1994
Analysis of Temperatures and Thermal Processes in the Uinta Basin
Sean D. Willett, David S. Chapman
CSPG Special Publications
... by the A.A.P.G. (A.A.P.G. 1976) in which a correction, Tc, is given as a fourth-order polynomial in depth, z Fitting this polynomial in a least squares sense...
1987
Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12
E. W. Peikert
AAPG Special Volumes
... and which must be grouped for purposes of final interpretation. Figure 8 shows the data for the 105 to 112 m.y. interval. Linear least-squares curves have...
1985
The Application of a New Variable Pressure Decline-Curve Analysis Technique to Unconventional Reservoirs in Argentina
Leopoldo M. Ruiz Maraggi, Fernando Tuero, Mark P. Walsh, Larry W. Lake
Unconventional Resources Technology Conference (URTEC)
... in terms of volume per unit pressure). ; , , = ( ; )+ − ( − − ; ). (1) The least-squares regression of the cumulative production is given by Eq...
2023
Kutei Basin: Feasibility Study of a Broadband Acquisition
Gilbert Del Molino, Fabri Ikhlas Gumulya, Dedy Sulistiyo Purnomo, Paolo Battini, Bonita Nurdiana Ersan, Francesca Brega, Ferdinando Rizzo, Giorgio Cavanna, Buia Michele
Indonesian Petroleum Association
..., the maximum allowed Q factor was limited at 200, and data were preconditioned with a least-squares smoothing (red crosses in figure 5 are Q measurements...
2013
Beyond chi-squared: Additional measures of the closeness of a model to data1
Alan G. Jones
Petroleum Exploration Society of Australia (PESA)
...al correlation in least squares regression .1, Biometrika, 37(3-4), 409-428. Durbin, J., and G. S. Watson (1951), Testing for serial correlation in lea...
2019
Parameterizing and Block-Averaging Electrical Characteristics of a Reservoir: an Essential part of Electrical/Electromagnetic Evaluation of Production Process: Reservoir Characterization and Modeling
A. J. Mansure
AAPG Special Volumes
..., Washington, pp 23, 1966. 19. Anderson, W.L., Adaptive nonlinear least-squares solution for constrained or unconstrained minimization problems (Subprogram...
1991
Improved Petrological Modal Analyses from X-Ray Powder Diffraction Data by Use of the Rietveld Method. Part II. Selected Sedimentary Rocks
W. G. Mumme, G. Tsambourakis, I. C. Madsen, R. J. Hill
Journal of Sedimentary Research (SEPM)
... the appropriate diagonal elements of the inverse full matrix of the least-squares procedure (Hill and Howard 1986). The much smaller relative errors...
1996
X-Ray Mineralogical Discrimination of Depositional Environments of the Krishna Delta, Peninsular India
Ray E. Ferrell , George F. Hart , Seetarama Swamy , Bhanu Murthy
Journal of Sedimentary Research (SEPM)
... the 2-50° 2 interval on XRD patterns of EG-saturated samples. A least-squares minimization technique was used to assess the goodness of fit between...
1998
Estimation of Mineralogy and Lithology from Geochemical Log Measurements (1)
RICHARD F. WENDLANDT and KAMAL BHUYAN
AAPG Bulletin
... analyses. Mineral logs calculated using least-squares inversion programs accurately describe changes in mineralogy and mineral proportions once...
1990
Acoustic Properties of Sediment on the Southern Tonga Platform as Determined from Seismic Sonobuoy Studies
Jonathan R. Childs
Circum Pacific Council Publications
... hyperbola as a function of dis tance, a plot of the squared values will fall along a straight line. In practice, measured values are fit by least-squares...
1985
Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming
Henry P. Heasler , Natalya A. Kharitonova
AAPG Bulletin
... estimates and the delineation of sonic anomalies. Statistical Fitting Technique A least-squares fitting technique is applied to equation 3. However...
1996
Reservoir Characterization and Modeling: A Look Back to See the Way Forward
Xinghe Yu, Y. Zee Ma, David Psaila, Paul La Pointe, Ernest Gomez, Shengli Li
AAPG Special Volumes
... performance data using the least squares method was proposed by Coats et al. (1970). Reservoir description based on well-logging data was conducted...
2011
Establishing a Regional Geologic Framework for Carbon Dioxide Sequestration Planning: A Case Study
Erik R. Venteris, Ronald R. Riley, James McDonald, Lawrence H. Wickstrom, James A. Drahovzal, John A. Harper
AAPG Special Volumes
... calculation, a variety of sources were used to obtain a solution for equation 2. Salinity was modeled using a least-squares relationship between measured...
2009
Domba Conglomerate, Devonian, Norway: Process and Lateral Variability in a Mass Flow-Dominated, Lacustrine Fan-Delta
W. Nemec, R. J. Steel, S. J. Poreebski, Å. Spinnangr
CSPG Special Publications
... = number of data). The thick oblique line with corresponding equation is a least-squares regression line fitted to the data (r = linear correlation...
1984
Multi-regression Modeling Approach for Choke Performance and Production Analysis
Mario Vicente, Raúl Belkenoff
Unconventional Resources Technology Conference (URTEC)
... to work on the βs coefficients determination is the Ordinary Least Squares (OLS). Defining S as the summation of error squares for n observations: n...
2023
Seismic Refraction Studies in Gulf of California
Richard P. Phillips
AAPG Special Volumes
... the input data; these "water delay corrected" data were then used to calculate slopes and intercepts of lines using the method of least squares...
1964
Application of seismic curvature attributes in the delineation of coal texture and deformation in Zhengzhuang field, southern Qinshui Basin
Lutong Cao, Yanbin Yao, Dameng Liu, Yanhui Yang, Yingjin Wang, and Yidong Cai
AAPG Bulletin
.... Hennings, 2003, Improving curvature analyses of deformed horizons using scale-dependent filtering techniques: AAPG Bulletin, v. 87, no. 8, p. 1255...
2020
Abstracts: Prewhitening with Matrices; #90173 (2015)
C. Robert Pinnegar
Search and Discovery.com
... amplitude followed by zeroes. ( is the length of , and is the length of .) To obtain a least-squares estimate of from (3), we must solve the familiar...
2015
The Nonlinear Inversion of Paleogeothermal Evolution: An Example from the Northern Part of the South China Sea
Xue aimin
Geological Society of Malaysia (GSM)
..., the least squares statistical analysis was used to obtain the relationship of Ro data with depth. The relationship of Ro with depth accepted...
1993