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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,357 documents.
Bayesian uncertainty quantification for reservoir parameter changes estimated from time-lapse machine learning
Jinsong Chen, Chang Li, Lei Wei, Anusha Sekar, Maisha Amaru
International Meeting for Applied Geoscience and Energy (IMAGE)
... and Exhibition, Paper Number SPE-146771-MS, doi: https://doi.org/10.2118/146771-MS. Li, C., M. Meadows, and T. Dygert, 2019, Warping least-squares inversion...
2024
ELECTRONIC COMPUTERS AID IN EXPLORATION DECISIONS AND INTERPRETATIONS
E. J. Assiter
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... be approximated by a low-order surface, but higher order than a plane. The least squares surface fitting routine for regular or irregularly spaced...
1962
AVO and Inversion Contribute to Makassar Exploration Efforts
William L. Soroka, Herry Andiarbowo, Anung Widodo
Indonesian Petroleum Association
.... The inversion builds a layered acoustic impedance (least-squares best fit) model from which a reflectivity series can be computed. With a good result...
1995
Quantitative Characterization of Deformation and Damage in Shale Under Compression Utilizing Digital Image Correlation
Fatick Nath, Edgardo Aguirre, Gabriel Aguirre, Jose L. Perez, Cesar Netro, Flavio Borjas, Valeria Limon
Unconventional Resources Technology Conference (URTEC)
...., Asundi, A., Xie, H., Gao, J., 2009. Digital image correlation using iterative least squares and pointwise least squares for displacement field...
2022
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
Fourier and Autocorrelation Analysis of Estuarine Tidal Rhythmites, Lower Breathitt Formation (Pennsylvanian), Eastern Kentucky, USA
Ronald L. Martino, Dewey D. Sanderson
Journal of Sedimentary Research (SEPM)
... for analysis. Additionally, the locality 3 data appear to be noisier. An exponential least squares regression curve was fitted to the data...
1993
Sediment characteristics of some Nova Scotian beaches
Edward Bryant
Atlantic Geology
... are more objective and efficient, and so were used here. These techniques are based on either maximum likelihood or non-linear least squares methods...
1983
Evaluation of Electron Tomography Reconstruction Methods for a Barnett Shale
Laura Frouté, Emeric Boigné, Matthias Ihme, Anthony R. Kovscek
Unconventional Resources Technology Conference (URTEC)
... techniques (Conjugate Gradient Least Squares, Simultaneous Iterative Reconstruction Technique) are used to reconstruct the structure of a Barnett shale...
2021
Open and Closed Number Systems in Stratigraphic Mapping
W. C. Krumbein
AAPG Bulletin
..., is a least-squares index of the linear relations between two variables. The sample variance for any measured variable (such as thickness or percentage...
1962
Synthetic Stratigraphy with a Stochastic Diffusion Model of Fluvial Sedimentation
Jon D. Pelletier, Donald L. Turcotte
Journal of Sedimentary Research (SEPM)
... scales. A least-squares linear fit to the logarithms (base 10) of the data yields a slope of -0.76. This result is consistent with the analysis...
1997
Fold Geometry Within Part of Michigan Basin, Michigan
E. H. Timothy Whitten , Walter A. Beckman, Jr.
AAPG Bulletin
... the actual bedding surfaces by the familiar technique of trend-surface analysis (using the least-squares method to derive the coefficients...
1969
Geochemical Evaluation of Part of the Cambay Basin, India
A. Banerjee , K. L. N. Rao
AAPG Bulletin
... vitrinite reflectances plotted against depth for the two blocks under study. Least-squares best-fit lines for the data indicate hydrocarbon generation...
1993
Unlocking hidden potential in shallow water Gulf of Mexico legacy data for carbon capture and storage exploration
Rachel Collings, Igor Marino, Adriana Arroyo Acosta, Jack Kinkead, Hugo Medel, Trong Tang, Gabriela Suarez, Brett Sellers
International Meeting for Applied Geoscience and Energy (IMAGE)
... updates. To obtain the resolution required to characterize the CCS storage site, a Least Squares Kirchhoff pre stack depth migration (LS-KPSDM) was run...
2024
Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)
Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave
Search and Discovery.com
... function of a special form. The [ p, q] -Padé approximation of the z-transform function is formulated as a constrained least squares minimization problem...
2015
Abstract: Full Waveform Inversion with Phase Encoded Deconvolution Imaging Condition; #90224 (2015)
Wenyong Pan, Kris Innanen, and Gary Margrave
Search and Discovery.com
.... Introduction Full waveform inversion (FWI), formulated as a least-squares inverse problem, seeks to minimize the difference between the observed data...
2015
Antialiasing 5D Interpolation; #41497 (2014)
Stephen K. Chiu
Search and Discovery.com
... initial model are typically not aliased and can be used to constrain the least-squares inversion in MWNI, frequency by frequency, to overcome the aliasing...
2014
Auto-Control Model Building Using Machine Learning Regression for Extreme Response Prediction
Darrell Leong, Anand Bahuguni
Australian Petroleum Production & Exploration Association (APPEA) Journal
...: FHs ðh; a; m; p; kÞ ¼ 1 À exp½Àahm expðÀphk Þ ð1Þ with parameters a, m, p and k optimised via least-squares. The conditional probability density...
2020
Meramec Velocity Systematics
Jing Fu, Carl Sondergeld, Chandra Rai
Unconventional Resources Technology Conference (URTEC)
... content. The following fits to the data are obtained by least-squares regression. For compressional velocity (φ is the volume fraction pores, Clays...
2020
Reduced Physics-Based Simulation for Unconventional Production Forecasting A 1D Approach
Stein Krogstad, Miguel A. Jakymec, Amir Kianinejad, Dryonis Pertuso, Sebastien Matringe, Andreas Brostrom, Jakob Torben, Olav Møyner, Knut-Andreas Lie
Unconventional Resources Technology Conference (URTEC)
... 𝑃𝑉), and we can approximate 𝑃𝑉 by solving 𝑓(𝑃𝑉) = 0. Detailed calibration: For the detailed calibration we use a weighted least squares objective...
2025
Nonlinear LS-RTM based on the seismic scale separation and full-wavefield multiparameter FWI
ystein Korsmo, Yang Yang, Nizar Chemingui, Andrey Pankov, Antonio Castiello
International Meeting for Applied Geoscience and Energy (IMAGE)
... Chemingui, Andrey Pankov and Antonio Castiello, PGS Summary Least-squares migration (LSM) images the subsurface through an inversion process and seeks...
2022
Origin of overpressure and pore-pressure prediction in the Baram province, Brunei
Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit
AAPG Bulletin
... (Cp). density = density porosity.The Cp and tma can thus be determined using linear regression (least squares fit) from the density t crossplot...
2009
Integration of Depth Conversion, Seismic Inversoin and Modeling Over The Belida Field, South Natuna Sea Block "B", Indonesia
Patrick Jonklaas
Indonesian Petroleum Association
... Rupnik, 1943. Least Squares Determination Of The Velocity Function V = Vo + kz For Any Set Of Time Depth Data, Geophysics, Volume 8, pages 356-361...
1991
Regional exploration of crustal structures from long-offset OBN data by extended-source FWI
Gaoshan Guo, Stéphane Operto
International Meeting for Applied Geoscience and Energy (IMAGE)
... skipping by convexifying FWI. One category of methods replaces the least-squares norm of the data misfit with more convex distances between observed...
2024
Investigation of Time-series Clustering to Forecast Wells with a Short Producing Life
Reza Khaksarfard, S. Hamed Tabatabaie, Louis Mattar
Unconventional Resources Technology Conference (URTEC)
..., subject-matter expertise and judgment. URTeC 992 3 In this work, acceptable fits are found as follows: i. The least squares error method is applied...
2019
Inference of Induced Fracture Geometries Using Fiber-Optic Distributed Strain Sensing in Hydraulic Fracture Test Site 2
Stephen Bourne, Kees Hindriks, Alexei A. Savitski, Gustavo A. Ugueto, Magdalena Wojtaszek
Unconventional Resources Technology Conference (URTEC)
...). Fracture widths at the fracture-fiber intersection are estimated using a least-squares inversion, where the matrix of influence coefficients between...
2021