Hybridised Weighted Boot-Strap Differential Semblance

Hamish Wilson, Lutz Gross

Petroleum Exploration Society of Australia (PESA)

...; Fomel, 2007b; Liu et al., 2014; Chen et al., 2015) in which we obtain the local similarity through solving a least-squares problem with shaping...

Modeling the Semivariogram: New Approach, Methods Comparison, and Simulation Study

A. Gribov, K. Krivoruchko, J. M. Ver Hoef

AAPG Special Volumes

... procedure using modified iterative weighted least squares is presented. This algorithm is shown to be reliable for a wide range of data types...

Sparsity and Continuity Enhancing Seismic Imaging, #41532 (2015).

Peyman P. Moghaddam, Felix Herrmann, and Chris Stolk

Search and Discovery.com

..., Canada 2 Abstract A non-linear singularity-preserving solution to the least-squares seismic imaging problem with sparseness and continuity constraints...

Data Analysis and Model Development

Alan P. Byrnes

Special Publications of SEPM

... methodology commonly util­ ized is least squares regression analysis. This analysis is easy to perform, allows easy conceptual examination of the regressions...

Tracerscan – A Spectroscopy Technique for Determining the Distribution of Multiple Radioactive Tracers in Downhole Operations

L. L. Gadeken, H. D. Smith Jr., Choung Nguyen

Indonesian Petroleum Association

... spectroscopy logging. This elemental separation can be achieved using spectral stripping techniques6 or using a weighted least-squares algorithm similar...

Abstract: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)

Stewart Trickett, Lynn Burroughs, and Andrew Milton

Search and Discovery.com

... years. Here we combine iteratively reweighted least squares (Scales and Gersztenkorn, 1987) with weighted rank reduction (Srebo and Jaakkola, 2003...

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...

Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector

Xuan Ke, Mauricio Sacchi, Ying Shi

International Meeting for Applied Geoscience and Energy (IMAGE)

...Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector Xuan Ke, Mauricio Sacchi, Ying Shi...

PP-PS depth-domain AVA inversion

Maud Cavalca, Robin P. Fletcher

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Whenever the medium shows some level of geological complexity, this is usually achieved using pre-stack least-squares migration techniques (Fletcher...

Horizon detection with CNN-based multiscale volumetric flattening

Jesse Lomask

International Meeting for Applied Geoscience and Energy (IMAGE)

... surfaces are subsequently fitted to these dips using least squares inversion. This method is demonstrated on 3D seismic using both 2D and 3D CNNs...

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

... two stations over the timespan are ordered temporally and a slope is computed by weighted least-squares yielding a geodesic rate. The weights assigned...

Seismic Trace Interpolation using Adaptive Prediction Filters

Search and Discovery.com

... least squares can be found in Honig and Messerschmidt (1984) as well as Haykin (2002) and can be summarized as follows. We first define T u(i ) = [ xi...

Abstracts: Microseismic Source Inversion in Anisotropic Media; #90173 (2015)

Scott Leaney, Chris Chapman, and Tadeusz Ulrych

Search and Discovery.com

..., Calgary, Alberta, Canada, May 9-11, 2011 procedure is called “least-squares time reversal” or simple “LTRev” (Leaney, 2008) and can be viewed as a type...

Abstract: Making FX Interpolation More Robust by Spectrum-guided Reconstruction; #90171 (2013)

Mostafa Naghizadeh and Mauricio Sacchi

Search and Discovery.com

... the least-squares method (Duijndam et al., 1999). We illustrate with synthetic examples that the proposed method can handle gaps and extrapolation problems...

Abstract: Time-lapse AVO Inversion; #90187 (2014)

A. Nassir Saeed, Laurence R. Lines, and Gary F. Margrave

Search and Discovery.com

..., and Margrave, G.F., 2010, Iteratively re-weighted least squares inversion for the estimation of density from well logs: part one: CREWES report, 22...

Three common statistical missteps we make in reservoir characterization

Frank Male and Jerry L. Jensen

AAPG Bulletin

... exist to debias (adjust) the line. Etnyre (1984) describes a method using weighted least squares. Another method, described by Jensen et al. (2000, p. 212...

Computer Mapping of Pinnacle Reefs, Evaporites, and Carbonates: Northern Trend, Michigan Basin: Chapter 5

David E. Hamilton, Skye K. Henize

AAPG Special Volumes

... represent data for this surface. (A) Grid built using a least squares algorithm with a biharmonic filter. It is difficult to tell which closures...

A Robust Gradient for Long Wavelength FWI Updates

Jaime Ramos-Martinez, Sean Crawley, Kathy Zou, Alejandro Valenciano, Lingyun Qiu, Nizar Chemingui, Andrew Long

Petroleum Exploration Society of Australia (PESA)

... a nonlinear inverse problem by matching modelled seismic data to recorded field data. The matching is quantified by the residuals of a least-squares...

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...

Development of Raman Spectroscopy as a Thermal Maturity Proxy in Unconventional Resource Assessment

Grant Myers, Kelsey Kehoe, Paul Hackley

Unconventional Resources Technology Conference (URTEC)

... (MS-2671253). Similar strong relationships occurred in the Duvernay samples with respect to increasing maturity when using Partial Least-Squares analysis...

Accelerated augmented Lagrangian full-waveform inversion based on truncated randomized singular value decomposition

Jiahang Li, Hitoshi Mikada, Junichi Takekawa

International Meeting for Applied Geoscience and Energy (IMAGE)

... is becoming more and more mature; however, the minimization process of FWI, which uses a least-squares algorithm, still suffers from problems...

Kinematic, Chemical, and Petrological Development of Protomylonite Within the Scove Canyon Segment of the Cuyamaca-Laguna Mountains Shear Zone, Peninsular Ranges, Southern California

Shane M. Howell, Corrin S. Gallarano, Gary H. Girty

Pacific Section SEPM

..., and Baumgartner and Olsen (1995) provided a computerized x-y weighted least squares analysis routine that solves for M°/Mm and, in addition, provides...

Finding the Nugget of Truth: Using Quantile Regression With Production Data for Comparison to Geological Controls and Completion Efficiency

Alan Lindsey, Keith Robertson

Unconventional Resources Technology Conference (URTEC)

... 𝑒𝑒 −( � 𝜏𝜏) . The mean projection is estimated using equation: 1� (1+𝑏𝑏∗𝐷𝐷∗𝑡𝑡) 𝑏𝑏 the least squares fit method, which minimizes the sum...

Abstract: Robust Singular Spectrum Analysis for Erratic Noise Attenuation; #90187 (2014)

Ke Chen and Mauricio D. Sacchi

Search and Discovery.com

... (?). approximately got! SVD in their robust squares (IRLS) the estimate weights are least ˆ ! is the rank the reconstructed (M UV method based on randomized...

Control and Adjustment of Surveys with the Magnetometer or the Torsion Balance

Donald C. Barton

AAPG Bulletin

..., 1924). T. W. Wright and J. F. Hayford, The Adjustment of Observations by the Method of Least Squares with Application to Geodetic Work, Van...