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The AAPG/Datapages Combined Publications Database

Showing 1,450 Results. Searched 195,448 documents.

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Abstract: Designing Wavefield Extrapolators using a Weighted Least-Squares with a Transition Band Approach; #90211 (2015)

Saleh Al-Saleh, John Bancroft, Gary Margrave

Search and Discovery.com

... practical stable operators. This paper shows another extrapolation method that uses weighted least squares with a transi tion band to design a wav...

2015

Abstract: Enhancing the FOCI Algorithm by Using a Weighted Least-Squares Approach; #90211 (2015)

Saleh Al-Saleh and Gary Margrave

Search and Discovery.com

...Abstract: Enhancing the FOCI Algorithm by Using a Weighted Least-Squares Approach; #90211 (2015) Saleh Al-Saleh and Gary Margrave Datapages/Search...

2015

Abstract: Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #90310 (2017)

Francesco Perrone, Graham Roberts, Lorenzo Casasanta, Andrew Ratcliffe

Search and Discovery.com

...Abstract: Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #90310 (2017) Francesco Perrone, Graham Roberts, Lorenzo...

2017

Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #42183 (2018)

Francesco Perrone, Graham Roberts, Lorenzo Casasanta, Andrew Ratcliffe, Arash Jafargandomi, Karen Purcell

Search and Discovery.com

...Applications of Kirchhoff Least-Squares Migration: Towards Reservoir Imaging; #42183 (2018) Francesco Perrone, Graham Roberts, Lorenzo Casasanta...

2018

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

Abstract: Time Domain Least-squares Prestack Migration; #90172 (2014)

Ricardo C. Rebollo, Mauricio D. Sacchi

Search and Discovery.com

...Abstract: Time Domain Least-squares Prestack Migration; #90172 (2014) Ricardo C. Rebollo, Mauricio D. Sacchi AAPG Search and Discovery Article #90172...

2014

Algorithm Comparison with Cross Sections: Appendix A

David E. Hamilton, Thomas A. Jones

AAPG Special Volumes

... for illustrative purposes. Least-Squares Algorithm This method of calculating a nodal value consists of fitting a simple surface through the nearby...

1992

Abstract: Greedy Least-Squares and its Application in Radon Transforms; #90171 (2013)

Juefu Wang and Mark Ng

Search and Discovery.com

... objective function. With these ideas in mind, we propose a greedy least-squares method for high-resolution Radon transform as below in pseudo code: 1...

2013

Spectral Recomposition in Stratigraphic Interpretation, #41376 (2014)

Yihua Cai, Sergey Fome, Hongliu Zeng

Search and Discovery.com

... discontinuities. We propose separable nonlinear least-squares estimation in spectral recomposition. Employing the Gauss-Newton method, separable...

2014

Abstract: Using Fuzzy Logic to Predict Petrophysical Parameters and Improve the Accuracy of Least Squares Regression Analysis; #90211 (2015)

Joaquin Aristimuno, Milagrosa Aldana, and Anna Atencio

Search and Discovery.com

...Abstract: Using Fuzzy Logic to Predict Petrophysical Parameters and Improve the Accuracy of Least Squares Regression Analysis; #90211 (2015) Joaquin...

2015

Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)

Aaron Stanton

Search and Discovery.com

... in the imaging step via preconditioned least squares migration. We show that the method can be used to either regularize the data, or to migrate the data...

2015

Abstract: Parallel Implementation of Pre-stack Least-squares Migration for Distributed Systems; #90171 (2013)

Sam T. Kaplan

Search and Discovery.com

... for evaluating the forward, adjoint and least-squares inverse (using the conjugate gradient method). All run-times are given in minutes. Discussion We...

2013

Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015)

Marcus R. Wilson and Robert J. Ferguson

Search and Discovery.com

... on the phase shift method of Gazdag (1978). Acquired seismic data is extrapolated recursively through the near surface by weighted-damped least squares...

2015

High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration

Jianping Huang, Jidong Yang, Tengfei Lin, Zhenchun Li, and Liang Chen

AAPG Bulletin

...High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration...

2023

New Method in X-Ray Quantitative Mineralogical Determination of Sedimentary Rocks: ABSTRACT

J. H. Fang, Levy Zevin

AAPG Bulletin

... be obtained easily through a least-squares analysis, Xms = Ks/I^primems, where I^prime = Ims/µs. The µs can be measured readily from the Compton...

1984

-- no title --

user

Search and Discovery.com

..., BC, Canada [email protected] Abstract/Excerpt A non-linear singularity-preserving solution to the least-squares seismic imaging problem...

Unknown

-- no title --

user

Search and Discovery.com

..., BC, Canada [email protected] Abstract/Excerpt A non-linear singularity-preserving solution to the least-squares seismic imaging problem...

Unknown

Abstract: A Joint LSPSM/Inversion Algorithm for High Resolution Time Lapse Imaging; #90187 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

... as ( ) ‖[ ][ ] [ ]‖ ‖[ ][ ]‖ (8) This is similar to the RJID formulation of Ayeni and Biondi (2010). We used the least squares conjugate gradients method (LSCG...

2014

Abstract: Antialiasing 5D Interpolation; #90187 (2014)

Stephen K. Chiu

Search and Discovery.com

... to constrain the least-squares inversion in MWNI, frequency by frequency, to overcome the aliasing artifacts. This new interpolation scheme expands...

2014

Broadband Least-Squares Wave-Equation Migration

Shaoping Lu, Andrew Long, Alejandro Valenciano, Nizar Chemingui

Petroleum Exploration Society of Australia (PESA)

... relates to the operator L, has less effect to the resulting image m. Here we introduce an implicit method to solve the least-squares problem. The LSM...

2018

Geology and Geophysics of South-Central Zavala and Adjoining Parts of Dimmit Counties, Texas: ABSTRACT

James A. Noel

AAPG Bulletin

... County to the south. The Elaine field is included in the study area. Gravity and magnetic residuals were calculated using the least-squares method...

1984

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