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The AAPG/Datapages Combined Publications Database
Showing 1,462 Results. Searched 196,217 documents.
Origin and Growth Mechanism of Authigenic Chlorite in Sandstones of the Lower Vicksburg Formation, South Texas
Jeffry D. Grigsby
Journal of Sedimentary Research (SEPM)
...% of a least-squares linear regression. Following this approach, the average 18O is approximately -7.2o/oo (PDB) (Fig. 5). Chlorite Cement Occurrence...
2001
Regional Assessment of Suitability of Organic-Rich Gas Shales for Carbon Sequestration: An Example from the Devonian Shales of the Illinois and Appalachian Basins, Kentucky
Brandon C. Nuttall, James A. Drahovzal, Cortland F. Eble, R. Marc Bustin
AAPG Special Volumes
... the analysis presented in Figure 8, the least squares linear regression equation used for modeling CO2 adsorption capacity isGamma-ray and density...
2009
Using 3-D Seismic Volumetric Curvature Attributes to Identify Fracture Trends in a Depleted Mississippian Carbonate Reservoir: Implications for Assessing Candidates for CO2 Sequestration
Susan E. Nissen, Timothy R. Carr, Kurt J. Marfurt, E. Charlotte Sullivan
AAPG Special Volumes
... production increases with distance from the northeast-trending lineaments in panel B. The dashed line shows a linear least squares fit to the data.The...
2009
Fracture Control of P-wave Azimuthal Anisotropy in a Laramide Basement-cored Anticline at Casper Arch, Wyoming: Insights from Correlations with Surface Analogs and Curvature Analyses
Duke Cooley, Eric Erslev
AAPG Special Volumes
... azimuthal normal move-out corrections at small spatial and temporal intervals. This improves seismic resolution by performing a linear least-squares fit...
2013
Fingerprints of Fluid Flow: Chemical Diagenetic History of the Jurassic Navajo Sandstone, Southern Utah, U.S.A.
Brenda Beitler, W.T. Parry, Marjorie A. Chan
Journal of Sedimentary Research (SEPM)
... a linear, least-squares fit of whole-rock chemistry, mineral composition, and mineral mass abundance (Parry et al. 1980). In addition to this regional sample...
2005
Paleohydrology of Ancient Dolomites: Geochemical Evidence
L. S. Land , M. R. I. Salem , D. W. Morrow
AAPG Bulletin
...------------------------------ Fig. 16. Least-squares regression lines for strontium content of four Allen Bay sections shown in Figure 17. Note consistent up-section increase...
1975
Structure of Upper Cenozoic Strata Beneath Kodiak Shelf, Alaska
Michael A. Fisher, Roland Von Huene
AAPG Bulletin
.... Structure contours of horizon C in Albatross basin. Location of map is shown in Figure 1. End_Page 1018------------------------------ least-squares...
1980
Petroleum-Related Origin for Uraniferous Organic-Rich Nodules of Southwestern Oklahoma
Joseph A. Curiale , Salman Bloch , Janina Rafalska-Bloch , William E. Harrison
AAPG Bulletin
... of the samples listed in Table 2. A least squares regression line is drawn through the points. It may be of some significance that a decrease in H/C ratio...
1983
Tectonic Evolution of Gulf of Anadyr and Formation of Anadyr and Navarin Basins
Michael S. Marlow, Alan K. Cooper, Jonathan R. Childs
AAPG Bulletin
... plot were fit by least squares (Fig. 9). Except for the deepest refractors, each data set is highly linear. The resulting best-fit lines for Anadyr...
1983
Influence of Paleoenvironmental Factors on Preservation of Organic Matter in Middle Cretaceous Greenhorn Formation, Pueblo, Colorado
Lisa M. Pratt
AAPG Bulletin
... least-squares fits of the data from the macroburrowed samples and the microburrowed to laminated samples. Fig. 5. Plot of hydrogen indices vs. oxygen...
1984
Estimating Thermal Conductivity in Sedimentary Basins Using Lithologic Data and Geophysical Well Logs (1)
FREDERIC BRIGAUD , DAVID S. CHAPMAN , and SYLVIE LE DOUARAN
AAPG Bulletin
... to various compositions. Using logarithms of conductivities, equation 7 becomes linear and least squares algorithms may be used. Table 2 lists the thermal...
1990
Diagenesis of Sandstones at Shale Contacts and Diagenetic Heterogeneity, Frio Formation, Texas (1)
KEITH B. SULLIVAN and EARLE F. MCBRIDE
AAPG Bulletin
... are considered, a linear least-squares regression between secondary pores and intergranular pores results in a correlation coefficient of 0.5. Conversely...
1991
A New Approach to Shale Compaction and Stratigraphic Restoration, Beaufort-Mackenzie Basin and Mackenzie Corridor, Northern Canada (1)
D. R. ISSLER
AAPG Bulletin
... IMAGE) for i = 1, 2, ... n data points. A least squares fit to the data yields an acoustic formation-factor exponent of 2.19 and a matrix transit time...
1992
Distribution and Generation of the Overpressure System, Eastern Delaware Basin, Western Texas and Southern New Mexico
Ming Luo , Mark R. Baker , David V. LeMone
AAPG Bulletin
... of depth in Figure 16. A least-squares fit to the BHTs shown yields an average geothermal gradient of 21°C/km for War-Wink field with a surface temperature...
1994
Origin of petroleum in Bangladesh
J. A. Curiale, G. H. Covington, A. H. M. Shamsuddin, J. A. Morelos, A. K. M. Shamsuddin
AAPG Bulletin
... Table 3), that is, south of 24.4 degreesN. The line is a least-squares best fit (r2 = 0.82). The Dd value is generally controlled by differences...
2002
Outcrop-based reservoir characterization: A composite phylloid-algal mound, western Orogrande basin (New Mexico)
Patrick D. Doherty, Gerilyn S. Soreghan, John P. Castagna
AAPG Bulletin
... into a mathematical grid using a least-squares calculation method and Surfer software. Mathematical gridding algorithms are subject to error, particularly...
2002
An integrated evaluation of hydrocarbon charge and retention at the Griffin, Chinook, and Scindian oil and gas fields, Barrow Subbasin, North West Shelf, Australia
Mark Brincat, Anthony Gartrell, Mark Lisk, Wayne Bailey, Luke Johnson, Dave Dewhurst
AAPG Bulletin
... (excluding the Ramillies-1 well), yields a correlation coefficient (R2) calculated from a least-squares regression of 0.98.Figure 7. Relationship between...
2006
A new technology for the characterization of microfractured reservoirs (test case: Unayzah reservoir, Wudayhi field, Saudi Arabia)
Mohammed S. Ameen, Ernest A. Hailwood
AAPG Bulletin
... on the Appalachian Plateau: Tectonophysics, v. 247, p. 121132.Kirschvink, J. L., 1980, The least-squares line and plane and the analysis of palaeomagnetic data...
2008
Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt
W. T., Parry, Marjorie A. Chan,, Barbara P. Nash
AAPG Bulletin
... of petrographic point counting (1000 points per thin section, 300-m step) and least squares fit of mineralogy, mineral chemistry, and whole-rock chemistry using...
2009
Kuparuk oil field, Alaska, a mixture of Kekiktuk gas condensate and Shublik oil
Leon I. Dzou
AAPG Bulletin
..., alternate least squares analysis of 46 C15+ biomarker concentrations indicates that six Kuparuk oils consist of mixed charge from Shublik, Kingak, and Hue...
2010
Outcrop-constrained hydrogeological simulations of brine reflux and early dolomitization of the Permian San Andres Formation
Beatriz Garcia-Fresca, F. Jerry Lucia, John M. Sharp Jr., Charles Kerans
AAPG Bulletin
..., M., and Y. Eckstein, 1995, Use of weighted least-squares method in evaluation of the relationship between dispersivity and field scale: Ground Water...
2012
Subsalt pressure prediction in the Miocene Mad Dog field, Gulf of Mexico
Michael P. Merrell, Peter B. Flemings, Glenn L. Bowers
AAPG Bulletin
... constrained the parameters n0 and in equation 7 with a least squares regression of log(n) versus (v) data for mudstones that were immediately adjacent...
2014
Hyperspectral imaging for the determination of bitumen content in Athabasca oil sands core samples
Michelle Speta, Benoit Rivard, Jilu Feng, Michael Lipsett, and Murray Gingras
AAPG Bulletin
... TBC” herein.The relationship between the spectral TBC estimates and the true TBC was evaluated by linear least squares regression analysis. In all...
2015
A method to evaluate pore structures of fractured tight sandstone reservoirs using borehole electrical image logging
Liang Xiao, Junran Li, Zhiqiang Mao, and Hongyan Yu
AAPG Bulletin
... and average fracture frequency of damage zones using a partial least squares statistical analysis: Implications for fault zone development: Journal...
2020
A mechanical basis of fault-bend folding
N. P. Benesh, and J. H. Shaw
AAPG Bulletin
... modified after Suppe (1983). We calculate S using a least-squares criterion and find that the trends in Γ for each ϕ value share very similar slope values...
2023