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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,621 documents.
Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 2: Three-Dimensional Seismic Monitoring of an Enhanced Oil Recovery Process
Robert J. Greaves, Terrance J. Fulp
AAPG Special Volumes
... relationship for postburn data. Using least-squares estimation, lines were fitted through the data points and forced through the origin. The slope...
2011
Near-Wellbore Fracture Diagnosis via Strain Decoupling from Integrated In-Well LF-DAS and DTS Data
Jiayi Song, Weibo Sui, Jiwen Li
Unconventional Resources Technology Conference (URTEC)
... outlier factor algorithm and linear least squares regression method. Accounting for the differences in temporal and spatial resolution between LF-DAS...
2025
Using and Improving Surface Models Built by Computer: Part 8. Integrated Computer Methods
David E. Hamilton
AAPG Special Volumes
... that are not supported by data. That is, the structures are by-products of the surface-modeling algorithm. Filters such as least squares, biharmonic...
1992
Sediment Composition and Hydrography in Six High-Gradient Estuaries of the Northwestern United States
Curt Peterson, Kenneth Scheidegger, Paul Komar, Wendy Niem
Journal of Sedimentary Research (SEPM)
... range widely in mean fluvial-discharge rates and mean tidal-prism volumes (Table 1). A least-squares linear regression performed on estuarine drainage...
1984
Economics of Drilling for Cretaceous Oil on East Flank of Denver-Julesburg Basin
J. J. Arps , T. G. Roberts
AAPG Bulletin
.... Since the points seemed to indicate a well established trend, an average straight line was computed by the method of least squares for the apparent...
1958
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
Geological Factors Influencing Porosity Estimates From Velocity Logs
Roberto Sarmiento
AAPG Bulletin
..., travel time, shaliness, and depth. They were fitted to multi-dimensional equations by the method of least squares. The results are equations relating...
1961
Iron Sulfides in Pleistocene Deep Black Sea Sediments and Their Paleo-Oceanographic Significance: Geochemistry
Robert A. Berner
AAPG Special Volumes
... are on a CaCO3-free basis. Straight line represents least-squares fit for gray sediment. Table 1. Chemical Data for Core 1464K Table 2. Chemical Data...
1974
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)
... of the diffraction peaks are not directly used, but rather a least-squares fit is obtained between the step-scanned points in the observed X-ray diffraction profile...
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
Eolian Suspension Above the Saltation Layer, the Concentration Profile
J.A. Gillies, L. Berkofsky
Journal of Sedimentary Research (SEPM)
.... The normalized concentration profile has more commonly been modeled as a power law. Least-squares regression was used to fit both the logarithmic...
2004
Transformation of Resistivity to Pseudovelocity Logs
Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs
AAPG Bulletin
...) using a higher order polynomial for the scale function; (2) fitting only one set of constants to the average scale function using a least-squares...
1975
Porosity Dependence on Temperature: Limits on Maximum Possible Effect
Lee P. Stephenson
AAPG Bulletin
...) are plotted versus present depth of burial in Figure 5, and fitted with least-squares regression lines. There is no significant difference...
1977
Seismic Refraction Data from Sunda Shelf
Robert E. Houtz , Dennis E. Hayes
AAPG Bulletin
... is determined from a five-point least-squares parabola. The "window" is advanced sequentially, one digitized point at a time, to the next set of five...
1984
Hydrothermics in the Wyoming Overthrust Belt
Gary W. Zielinski , , James A. Drahovzal , , Gail Moritz Decoursey , , Joseph M. Ruperto
AAPG Bulletin
...). Fig. 14. Mean annual surface temperature (Ts) vs. thermal gradient (g). Solid line is least-squares fit to data. Open symbols are measurement from...
1985
Interpreting Rock-Eval Pyrolysis Data Using Graphs of Pyrolizable Hydrocarbons vs. Total Organic Carbon (1)
F. F. LANGFORD and M. -M. BLANC-VALLERON
AAPG Bulletin
..., the least squares regression line is a statistical averaging process, and there should be a geological or other basis to ensure that each line is calculated...
1990
Three-dimensional kinematic modeling of reversible fault and fold development
Natacha Gibergues, Muriel Thibaut, Jean-Pierre Gratier
AAPG Bulletin
.... Szatmari, S. Demercian, D. Coelho, and J. A. Rici, 1993, Least-squares palinspastic restoration of regions of normal faulting: Tectonophysics, v. 221, no. 34...
2009
Integration of Magnetic, Gravity and Geologic Data in Mapping Geologic Structures: A Case Study of a part of Lafiagi [Sheet 203], Southwestern Nigeria, #41737 (2015).
Kehinde A. Olawuyi, Bankole D. Ako, Gregory O. Omosuyi, Obasanmi A. Adelusi
Search and Discovery.com
...) by solving Euler’s equations for a given index n by least-squares inversion of the data. 2D Forward Modeling and Inversion of the Aeromagnetic...
2015
Deconvoluting Mixed Petroleum and the Effect of Oil and Gas-Condensate Mixtures on Identifying Petroleum Systems; #42564 (2020)
Kenneth Peters, Andrew Murray
Search and Discovery.com
... of endmembers, including oil and gas condensate (<3,000 and >3,000 scf/bbl, respectively), which we deconvoluted by alternating least squares regression...
2020
Integrated Characterization of Carbonate Ramp Reservoirs Using Permian San Andres Formation Outcrop Analogs
C. Kerans , F. Jerry Lucia , R. K. Senger
AAPG Bulletin
... in the grainstone transform. The transforms illustrated in Figure 25 are least-squares fits to the data and have the following equations: Grainstone: k = 5.390...
1994
Role of Thermal Subsidence, Flexure, and Eustasy in the Evolution of Early Paleozoic Passive-Margin Carbonate Platforms
Gerard C. Bond, Michelle A. Kominz, Michael S. Steckler, John P. Grotzinger
Special Publications of SEPM
... for the post-rift subsidence of a passive margin (e.g., Fig. 2), using least-squares methods. The theoretical curves are exponential with a decay constant...
1989
Devonian Matrix Dolomites and Deep Burial Carbonate Cements: A Comparison Between the Rimbey-Meadowbrook Reef Trend and the Deep Basin of West-Central Alberta
Eric W. Mountjoy, Hans G. Machel, Darryl Green, James Duggan, Anthony E. Williams-Jones
CSPG Bulletin
... parameters of the unit cell were determined by entering the d-spacings (Å) of all peaks into a fitting program based on a least squares regression...
1999
Tests of Plate Tectonics: PART 1
A. A. Meyerhoff , Howard A. Meyerhoff
AAPG Special Volumes
.... The Bullard et al. and subsequent least-squares fits are meaningless, except on the scale of areas which are 4° of arc per side. Plate tectonics deals...
1974
The Geometry and Internal Architecture of Stream Mouth Bars in the Panther Tongue and the Ferron Sandstone Members, Utah, U.S.A.
Havard D. Enge, John A. Howell, Simon J. Buckley
Journal of Sedimentary Research (SEPM)
.... The parameter describing the thinning (taper) of each individual clinothem is derived from the least-squares regression line through a cross plot...
2010
Pluto 4D Monitor Two - A Second Outstanding Success
Sandra Mann, Scott Gagen
Australian Petroleum Production & Exploration Association (APPEA) Journal
... collaboration with Woodside geoscientists. Use of modern processing technologies, including least squares migration, full waveform inversion and wave...
2022