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The AAPG/Datapages Combined Publications Database
Showing 1,450 Results. Searched 195,452 documents.
Seismic Inversion Resolution Enhancement With (3S) Spectral Blueing, Spectral Balancing, and Stochastic Inversion on Fluvio Deltaic Environment
Aji Darma Maulana, Nine Safira, Ongki Ari Prayoga, Egie Wijaksono, Alit Ascaria
Indonesian Petroleum Association
... achieved by least squares. Therefore, this framework is not suitable for handling highly nonlinear inverse problems such as pre-stack seismic inversion...
2022
Abstract: A Ray+Waveform Inversion for the Potency Tensor; #90187 (2014)
Scott Leaney and Chris Chapman
Search and Discovery.com
...ng the generalized inverse, , computed using a complex SVD routine. The inversion process can be viewed as vector beam-forming, or least-squares tim...
2014
Some Geological Applications of Trend-Surface Analysis: ABSTRACT
W. A. Read
AAPG Bulletin
... by power-series polynomials, fitted by the least-squares method to areal geological data. The technique allows the regional component, represented...
1967
Abstract: Least-Squares Measurement of Shear-Wave Splitting; #90211 (2015)
Richard Bale, Jianchao Li, Bruce Mattocks, and Shuki Ronen
Search and Discovery.com
...Abstract: Least-Squares Measurement of Shear-Wave Splitting; #90211 (2015) Richard Bale, Jianchao Li, Bruce Mattocks, and Shuki Ronen Datapages...
2015
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
Acoustic approximation VTI reverse-time migration using pseudo-depth mapping method
Xinwen Zhang, Jianping Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
.... (2017); Sun et al. (2018) proposed a pseudo-depth domain cross-correlation least-squares inverse time migration method, which weakens the ambiguity...
2023
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
Abstract: Modified Euclids Blind Deconvolution Via Sparsity Optimization on a Sphere; #90187 (2014)
Nasser Kazemi and Mauricio D. Sacchi
Search and Discovery.com
... before and after deconvolution via SMBD, respectively. We also estimated the wavelet using the frequency-domain least squares estimator. The wavelet...
2014
Abstract: Simultaneous Source Separation Via Robust Time Variant Radon Operators; #90187 (2014)
Amr Ibrahim and Mauricio D. Sacchi
Search and Discovery.com
... (1995). The Radon coefficients m are estimated by minimizing equation 1 using, for instance, Iterative Re-weighted Least Squares (IRLS) (Scales, 1987...
2014
Tectonic Motion in Western USA From Satellite Laser Ranging: Chapter 23: Part IV. Satellite Geodesy
D. C. Christodoulidis , D. E. Smith, S. M. Klosko , J. W. Robbins , P. J. Dunn , M. H. Torrence
AAPG Special Volumes
... motion system. A new methodology has been implemented which has permitted a free least-squares adjustment for the vector motions of the sites...
1991
Practical Application of Adaptive Least-Squares RTM to Advance Field Development and Uncover New Reserves in the Sub Salt Provinces
Search and Discovery.com
N/A
Abstract: How to Attenuate Diffracted Noise: (DSCAN) A New Methodology; #90211 (2015)
Ali Karagul, Todd Mojesky, XinXiang Li, and Necati Gulunay
Search and Discovery.com
... be subtracted from the record either by straight subtraction (Figure 1c) or by least squares subtraction, if desired. Figure 3a, 3b and 3c show...
2015
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
Three common statistical missteps we make in reservoir characterization
Frank Male and Jerry L. Jensen
AAPG Bulletin
... of various disciplines is needed. Here, we look at three misapplications of ordinary least squares linear regression (LSLR), show how they can lead to poor...
2022
Deep Dix: Enhancing interval velocity model estimation through adversarial regularization
Joseph Stitt, Robert Clapp, Biondo Biondi
International Meeting for Applied Geoscience and Energy (IMAGE)
... early and later times are given equal priority through time indexing. Thus, we can pose the objective function in this least-squares problem with two...
2023
Subsurface Characterizaton Using Microseismic Velocity, Attenuation, and Ansiotrophy Tomography in a Geothermal Field
Ahmad Syahputra, Andri Dian Nugraha, Rachmat Sule, Sri Widiyantoro
Indonesian Petroleum Association
...). For inversion, a LSQR (Least Squares) method (Paige and Saunders, 1982) was implemented to update the subsurface seismic velocity model at each iteration...
2014
Abstract: Data Interpolation by Angular Weighted MWNI; #90187 (2014)
Mark Ng and Dan Negut
Search and Discovery.com
... data, and (3) to interpolate aliased dips. Since MWNI does a least-squares data fitting in space one frequency at a time, it uses the result from...
2014
Estimating Parameters for Hierarchical Permeability Correlation Models
Zhenxue Dai, Robert W. Ritzi Jr., David F. Dominic
Special Publications of SEPM
... for semivariograms, covariances, and transition probabilities were fitted with nested functions. The inverse procedure was here defined with the least-squares...
2004
Abstract: Blind Surface Consistent Wavelet Estimation; #90187 (2014)
E. Bongajum, N. Kazemi, and M. D. Sacchi
Search and Discovery.com
.... In this study, we contend that (9) and (10) are equivalent to a surface consistent least squares problem for estimating the source and receiver operators...
2014
The Use of Geoelectrical Imaging Surveys for the Delineation of Different Subsurface Geological and Man-Made Features
S. S. Abdul Nassir, C. Y. Lee
Geological Society of Malaysia (GSM)
... Prospecting, 23, 380-390. LaKE, M.H. AND BARKER, R.D., 1996. Rapid least-squares inversion of apparent resistivity pseudo-section by a Quasi-Newtonmethod...
1999
Abstract: Two-stage Blind Deconvolution; #90187 (2014)
Mafijul Islam Bhuiyan and Mauricio D. Sacchi
Search and Discovery.com
... (FISTA) (Beck and Teboulle, 2009) or Iterative Reweighed Least Squares (IRLS) (NeIder and Wedderburn, 1972). Notice that we need to use the l1...
2014
Abstracts: Full Waveform Inversion with Total Variation Regularization; #90173 (2015)
Amsalu Y. Anagaw, Mauricio D. Sacchi
Search and Discovery.com
... (FWI) based on the least-squares principle is in general mathematically ill-posed and, therefore, regularization methods are required to obtain unique...
2015
Computer Modeling of Hydrocarbon Migration Pathways and Fluid Flow Histories from Carbon Isotope Anomalies in Gulf Coast Exploration Wells
D. F. Williams , Lerche , Z. Yu
GCAGS Transactions
... enter the modeling linearly so that a least squares approach is appropriate, others enter in a highly non-linear manner so that a more complex...
1991
Abstracts: A New f-p Domain Weighting Function in Minimum Weighted Norm Interpolation of Seismic Data; #90173 (2015)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... be formulated as an underdetermined least squares inverse problem. In order to force interpolation to follow the directions of seismic events, the weighting...
2015
Abstract: Seismic Data Decomposition into Spectral Components Using Regularized Nonstationary Autoregression; #90187 (2014)
Sergey Fomel
Search and Discovery.com
... is to estimate coefficients an, n = 1,2,…,N such that the prediction error N e(x) = d(x) - å an bn (x) (1) n=1 is minimized in the least-squares sense...
2014