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The AAPG/Datapages Combined Publications Database
Showing 1,463 Results. Searched 196,121 documents.
Geothermal Variations in Oil Fields of Los Angeles Basin, California
Anders J. Carlson
AAPG Bulletin
...-temperature values. The mean gradient for a certain depth interval is derived by the method of least squares,(FOOTNOTE 1) on the assumption...
1930
Geotechnical Properties of Continental Slope Deposits Cape Hatteras to Hydrographer Canyon
George H. Keller, Douglas N. Lambert, Richard H. Bennett
Special Publications of SEPM
... of the sediment is greater than the slope i the two lines will never intersect and infinite sediment angle Least squares lines of 12 versus depth...
1979
Application of New Type Curves Using Fractal Concept for Analyzing the Interference Test Data in Dieng Geothermal Reservoir
Doddy Abdassah, I. Nengah Suabdi, Leksono Mucharam, R. Sumantri
Indonesian Petroleum Association
... the following equation: Equation (19) is valid for positive skin factor and it is obtained from a least squares fit. Figure 3 presents a new type curve...
1995
Enhanced Wellbore Placement Accuracy Using Geomagnetic In-Field Referencing and Multi-Station Correction
Stefan Maus, Matthew Herzl, Shawn DeVerse
Unconventional Resources Technology Conference (URTEC)
... errors are determined over multiple surveys, the method of least squares can be used to estimate the bias and scale error of each sensor. Once...
2015
Correlation between PMT and SPT results for Kenny Hill Formation
Mohd Faiz Mohammad Zaki, Mohd Ashraf Mohamad Ismail, Darvintharen Govindasamy, Mohd Hazreek Zainalabidin
Geological Society of Malaysia (GSM)
... combination with 95% confidence level produce R2 = 0.642. Regression analysis was carried out the least squares that fit given data and R-square was computed...
2019
Impact of Seismic Attenuation on Downhole Microseismic Moment Tensor Inversion
Donghong Pei, Natalia Verkhovtseva, Jon Doucette, Price Stark
Unconventional Resources Technology Conference (URTEC)
... No. 17. Pei, D. and Warpinski, N.R. 2015. Downhole Microseismic Moment Tensor Inversion by Damped Least-Squares. Presented at the 85th Annual...
2016
Isotope Geochemistry of Regionally Extensive Calcite Cement Zones and Marine Components in Mississippian Limestones, New Mexico
William J. Meyers, Kyger C. Lohmann
Special Publications of SEPM
... at the 95% confidence level for FeO and MnO is approximately 0.005 wt.%, and for MgO is 0.015 wt.%. Volatilization during analysis was evaluated with least...
1985
A Critical Review on Microbial Enhanced Oil Recovery Using Artificial Sandstone Core: Mathematical Model
Farizal Hakiki
Indonesian Petroleum Association
... and are determined simultaneously by the least squares method based on experimental data. Viscosity Model Pelofsky’s viscosity correlation is seen in Equation (5...
2014
Extracting Meaningful Estimates of Rock Properties from 3-D Anisotropic Velocity Models Derived from Borehole Microseismic
Scott Taylor, Jeremy King, Ben Schaeffer, Todd Hibbitts, Lucas McGreaham, Khaled Ghuneim
Unconventional Resources Technology Conference (URTEC)
...-optimal map of microseismic events. Accurate effective velocity modeling is also essential for travel time computation, used for a least squares...
2016
A Pressure Transient Technique for Monitoring Waterfloods
Jeff Spath
Indonesian Petroleum Association
...: Since we know M/(M-1) and sa from our previous analysis we can estimate sv (say through the method of least squares) that would give us a straight...
2000
Horizon Modeling using a Three-Dimensional Fault Restoration Technique
Karen S. Hoffman, John W. Neave
Indonesian Petroleum Association
... and contouring two-dimensional surfaces. Gridding techniques such as minimum tension, least squares, or nearest neighbor are among the most popular, as well...
2000
Identifying Re-Stimulation Effectiveness by Utilizing Microseismic Attributes
M. Preiksaitis, A. Baig, S. Bowman-Young, T. Urbancic
Unconventional Resources Technology Conference (URTEC)
...ate an Energy Index model was performed using the both the initial and refrac datasets. This least squares fit model can then be applied to each ev...
2016
Sedimentary Variation: Some New Facts and Theories
Percival Allen
Journal of Sedimentary Research (SEPM)
..., the general form of the central trend (constru ted by "least squares" in the ordinary way) is remarkably constant. This exhibits practical...
1945
AEM, Seismic and Power-lines: A hydrogeological case study in Peel, Western Australia
Andrew Pethick, Brett Harris, Olga Barron
Petroleum Exploration Society of Australia (PESA)
.... 5. 6. 7. 8. 1D inversion algorithm (See Raiche et al., 1999 and Raiche et al., 1985). This algorithm uses an SVD non-linear least-squares...
2019
Magnetic Stratigraphy and Tectonic Rotation of the Upper Paleocene Pattiway Formation, Caliente Range, San Luis Obispo County, California
Donald R. Prothero, Robert B. Vacca
Pacific Section SEPM
... of America Bulletin, v. 97, p. 1476-1487. Kirschvink, J. L., 1980, The least-squares line and plane and the analysis of paleomagnetic data: examples...
2001
Paleomagnetism of the Upper Paleocene Locatelli Formation, Santa Cruz County, California: Implications for Tectonic Rotation of the Northern Salinian Block
Donald R. Prothero, Ruben A. Lopez
Pacific Section SEPM
..., The least-squares line and plane and the analysis of paleomagnetic data: examples from Siberia and Morocco: Geophysical Journal of the Royal...
2001
Well Productivity Analysis of the Bakken Shale Play
Emilian R. Vankov, Svetlana Ikonnikova, Gurcan Gulen, Kenneth Medlock
Unconventional Resources Technology Conference (URTEC)
... process associated with equation (2) has a constant mean and variance, we can use ordinary least squares to estimate all parameters. As previously discussed...
2017
Use of Gravity Meter in Search for Stratigraphic Traps: Geologic Exploration Methods
Craig Ferris
AAPG Special Volumes
..., Theory of errors and least squares: New York, Macmillan, p. 155. Yungul, S. H., 1961, Gravity prospecting for reefs: the effects of sedimentation...
1972
The Slotted Cone Splitter
F. J. Flanagan, R. C. Kellagher , W. L. Smith
Journal of Sedimentary Research (SEPM)
... (12,20) = 2.28, there is no evidence that the interaction is significant. The interaction and the within sums of squares and their degrees of freedom...
1959
Understanding the Spatial Geological Heterogeneity of the Delaware Basin from Pre-Stack Seismic Inversion
Simon Payne, Andrew Lewis, Ben Hardy, Venkatesh Anantharamu, Iestyn Russell-Hughes
Unconventional Resources Technology Conference (URTEC)
... were performed using the least squares matching technique (White, 1980). Good ties were observed with cross-correlation values greater than 80...
2019
In Situ Logs of Gas Composition of CO2-ECBM Trial in Buchanan County, Virginia, with Downhole Reservoir Raman System
Grant A. Myers, Alec Cookman, Nino Ripepi
Unconventional Resources Technology Conference (URTEC)
... of carbon dioxide Raman response to pressure; (a) background-subtracted carbon dioxide doublet for the range of pressures indicated; (b) linear least...
2019
The economic environment and the growth in reserves from known gas fields in the Gulf of Mexico
Kevin F. Forbes, Ernest M. Zampelli
CSPG Bulletin
... OGIFF data. Based on the restricted least squares estimate of a function in which AGFs are assumed to decline monotonically with the age of the field...
2012
Rock Magnetic Determination of Angular Deviation in Grain Alignment Between Channel and Levee Sandstones Within a Submarine Fan Channel-Levee Complex, Brushy Canyon Formation, West Texas
Debnath Basu
GCAGS Transactions
... that the anisotropy is measured with sufficient redundancy and the best fit anisotropy tensor was determined using a least squares method. The tensor...
1995
Deep Learning for Quantitative Hydraulic Fracture Profiling from Fiber Optic Measurements
Weichang Li, Han Lu, Yuchen Jin, Frode Hveding
Unconventional Resources Technology Conference (URTEC)
... least squares (OLS) regression and robust version, least absolute deviation (LAD) regression have been applied in (Park et al. 2018) to convert...
2021
Quantitative Statistical Analyses of Columbia River Sediment Samples
James C. Kelley, John T. Whetten
Journal of Sedimentary Research (SEPM)
... samples from the Columbia reservoirs and from the Snake River were included in the analysis. Least squares polynomials to the fourth order were computed...
1969