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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,357 documents.
Estimation of the Information Capacity and Practical Significance of Relationships used in Geophysical Logging
A. I. Volkova, L. B. Dvorkin
Petroleum Geology: A Digest of Russian Literature
..., A. S., 1958, Method of least squares from principles of probability theory: Geodezizdat. Geophysical logging studies often use various empirical relationships...
1966
Difficult Lithologies: Part 4. Wireline Methods
Khaled Hashmy, Mark Alberty
AAPG Special Volumes
... these equations effectively for a solution. The more commonly used methods are -- Graphical crossplots -- Linear matrix solutions -- Weighted least squares...
1992
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
Least-squares non-stationary triangle smoothing
Reem F. Alomar, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
...Least-squares non-stationary triangle smoothing Reem F. Alomar, Sergey Fomel Least-squares non-stationary triangle smoothing Reem F. Alomar...
2022
A study on lossy compression for background wavefield storage in LSM
Átila Saraiva Quintela Soares, Mauricio Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... rate (bpd) 4 tolerance 16 28 40 52 10 − 910 − 610 − 410 − 310 − 2 (a) |m lossless − m lossy|2 2 Least-squares reverse time migration (LSRTM...
2024
A method of relative impedance holography-inversion based on reflection coefficient inversion
Jiangfeng Zheng, Jialin Sun, Zongyu Zhen, Shaoxuan Li
International Meeting for Applied Geoscience and Energy (IMAGE)
...) for spectrum inversion. OMP algorithm can reduce the searching range evidently in each iteration by the least-squares method, and proves to be more...
2022
Improving subsalt imaging using mode-converted waves and volumetric coherent noise attenuation in southern Gulf of Mexico
Riaz Alai, Nik Nur Halim C. Soh, M Shah B. Sulaiman, M. Iqbal Supardy, Kien Kok Lee, Sandeep Kumar, Syazwani Bt Suhairi, Christian Brinzer, Frederico Xavier de Melo, Hongyan Li, Iestyn Williams, Hugo Enrique Munoz Cuenca, Nolan Brand, Kate Glaccum, George Zhao, Saeeda Hydal, Khaled Abdelaziz, Emmi Sanchez Vargas
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Verschuur, 2003, Simultaneous adaptive least-squares subtraction of multiples: 65th Annual International Conference and Exhibition, EAGE, Extended...
2024
The "Sorting Out" of Geological Variables Illustrated by Regression Analysis of Factors Controlling Beach Firmness
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
... in the machine first computing by least squares methods the linear coefficients of the line of regression of beach firmness on each independent...
1959
Five Geological Datasets: Appendix B
David E. Hamilton, Thomas A. Jones
AAPG Special Volumes
..., and the least-squares gridding algorithm with smoothing filter was used (see Appendix A, this volume). STRUCTURAL TOP OF A COAL UNIT These control points...
1992
Ground Roll Removal and Signal Preservation by Cascading SVD Polarization Filters with Localized Fk-Filters; #41543 (2015)
Kristof De Meersman, Chris Ansorger
Search and Discovery.com
... as ‘Coherent Noise Attenuation’ (CNA). This localized least squares fkfilter is implemented in the fx domain and allows for irregular spatial sampling...
2015
A New Perspective to Shallow Water Flow (SWF) and Sinking Well-Head Preventions in Deep Water
Selim Simon Shaker
GCAGS Transactions
... in reference to subsea. The least squares fit for all the sand data measurement are linear with R2 values of 0.99 (Figs. 7 and 8). This is in agreement...
2015
Clay Typing, Mineralogy, Kerogen Content and Kerogen Characterization from DRIFTS Analysis of Cuttings or Core
Michael Herron, MaryEllen Loan, Alyssa Charsky, Susan L. Herron, Andrew E. Pomerantz, Marina Polyakov
Unconventional Resources Technology Conference (URTEC)
... Tmax values. DRIFTS Mineralogy and FTIR The DRIFTS methodology of performing a weighted least squares regression of a sample spectrum on a library...
2014
AAPG/Datapages Discovery Series No. 7: Multidimensional Basin Modeling, Chapter 2: Modeling Thermal Histories: How Important Are Thermal Conductivity Data?
Gallagher, K.
AAPG Special Volumes
..., reported as formation matrix thermal conductivities by Deming et al. (1992, 1996), was used to determine least-squares estimates of the matrix...
2003
The Age of Illite Cement Growth, Village Fields Area, Southern North Sea: Evidence from K-Ar Ages and 18O/16O Ratios
A. G. Robinson , M. L. Coleman , J. G. Gluyas
AAPG Bulletin
... 14 shows the data for Ravenspurn North, Cleeton, and Hyde field illites plotted on such a isochron diagram. The best-fit, unweighted, least squares...
1993
How Porosity and Permeability Vary Spatially with Grain Size, Sorting, Cement Volume, and Mineral Dissolution in Fluvial Triassic Sandstones: The Value of Geostatistics and Local Regression
J.M. McKinley, P.M. Atkinson, C.D. Lloyd, A.H. Ruffell, R.H. Worden
Journal of Sedimentary Research (SEPM)
... using the weighted least-squares functionality of Gstat. Kriging.—The coefficients of the variogram models estimated for the rock properties of porosity...
2011
Estimating the Line of Correlation
Norman Macleod, Peter Sadler
Special Publications of SEPM
... determined by the least and major axis along with an es squares reduced major axis Miller s 1977 qualitatively determined LOC equa timate of tion...
1995
Quantifying Detection Limits and Uncertainty in X-ray Diffraction Mineralogical Assessments of Biogenic Carbonates
Karen L. Vyverberg, John M. Jaeger, Andrea Dutton
Journal of Sedimentary Research (SEPM)
... in fossil coral samples. We compare the accuracy and precision of an ordinary-least-squares and a weighted-least-squares regression technique for low...
2018
Study on fluid discrimination method based on prestack frequency-dispersion characteristics
Lien Bian, Jun Ming, Yuxiu Wang, Qian Yu
International Meeting for Applied Geoscience and Energy (IMAGE)
... f ) B (t ) ( f f )C (t ) 0 n m 0 n m 0 n m By the least squares inversion (SVD) equations (15) and (16), we can get the I a , I b and I c...
2022
Dual constrained reservoir modeling with geological factors and seismic attributes for exploration stage
Hongmei Luo, Yiran Xing, Changjiang Wang, Zhijing Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... a quadratic polynomial nonlinear relation is established by the least squares method between the fan's advance distance(L), width-to-depth ratio(k), boundary...
2023
An Empirical Correlation to Predict Relative Permeability in Fractured Reservoirs Considering the Stress State and the Capillary Number
Kelly Díez, Alejandro Restrepo, Alirio Ocampo, Jonny Patiño, Juan Rayo, Diego Ayala, Luis Rueda
Unconventional Resources Technology Conference (URTEC)
... c14 0,15 c15 2073,30 Table 3. Correlation parameters for W-O Kr prediction at variable Nc and σ´. Results The error is calculated by the least...
2022
Deblurring migration images with point spread function filter
Cewen Liu, Nanxun Dai, Wei Wu, Xiaofeng Wu, Mingjie Guo, Haohuan Fu
International Meeting for Applied Geoscience and Energy (IMAGE)
... and preconditioning scheme to obtain acceptable least-squares migration (LSM) images with reduced computational cost. However, there are severe overlaps...
2022
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
The Next Generation of Risk-Based Inspection for Coal Seam Gas Wells
Scott Collins, Joel Everson
Australian Petroleum Production & Exploration Association (APPEA) Journal
... management system, asset management, degradation prediction, digital twin, inspection interval, inspection optimisation, maintenance strategy, mobility...
2020
Sequential Shrinking Particle Swam Optimization (SSPSO) and Hierarchical K-Means Clustering Methods to Improve Probabilistic History Matching and Forecast
Theoza Nopranda
Indonesian Petroleum Association
... S. P. 1982. Least Squares Quantization in PCM. IEEE Transactions on Information Theory 28: 129-137. https://doi.org/10.1109/TIT.1982.1056489 5...
2022
Regional Trends of Sandstone Porosity Versus Vitrinite Reflectance—A Preliminary Framework
James W. Schmoker, Timothy C. Hester
Rocky Mountain Section (SEPM)
... are ordinary least-squares regression lines with Rm as the independent variable. A given Rm measurement is the mean of tens of individual reflectance...
1990