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The AAPG/Datapages Combined Publications Database
Showing 1,448 Results. Searched 195,372 documents.
Abstract: Enhancing the FOCI Algorithm by Using a Weighted Least-Squares Approach; #90211 (2015)
Saleh Al-Saleh and Gary Margrave
Search and Discovery.com
.... The inverse operator is designed as a band-limited inverse of the fir st. The least-squares FOCI operator is form ed as a con volution of the first operator...
2015
Algorithm Comparison with Cross Sections: Appendix A
David E. Hamilton, Thomas A. Jones
AAPG Special Volumes
... of algorithms. Figure 1 is a map showing the distribution and values of the synthetic data with contours drawn using a least-squares gridding algorithm...
1992
Least Square Q-Kirchhoff Migration: Implementation and Application
Xiaodong Wu, Yi Xie, Joe Zhou, Dechun Lin, Yu Wang
Petroleum Exploration Society of Australia (PESA)
... LSQPSDM. In contrast to standard least squares Kirchhoff migration, in our approach the inversion is approximated by inverse Hessian filtering to give...
2018
High-Resolution Deconvolution with Sparsity and Lateral Continuity Constraints
Juefu Wang
Search and Discovery.com
... Riel, 1990) and least-squares migration (Wang and Sacchi, 2006). One challenge for sparse inversion is that the algorithm can be unstable...
Unknown
High-Resolution Deconvolution with Sparsity and Lateral Continuity Constraints
Juefu Wang
Search and Discovery.com
... Riel, 1990) and least-squares migration (Wang and Sacchi, 2006). One challenge for sparse inversion is that the algorithm can be unstable...
Unknown
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
... and artifacts caused by the deviation of the adjoint from the true inverse operator. A least-squares migration process approximates the application...
2018
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: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)
Stewart Trickett, Lynn Burroughs, and Andrew Milton
Search and Discovery.com
...). This is optimal in that, given an n-by-n matrix A and a rank k, it generates the rank-k matrix R that minimizes Thus the truncated SVD is a least-squares solution...
2014
Abstract: Greedy Least-Squares and its Application in Radon Transforms; #90171 (2013)
Juefu Wang and Mark Ng
Search and Discovery.com
...Abstract: Greedy Least-Squares and its Application in Radon Transforms; #90171 (2013) Juefu Wang and Mark Ng Greedy Least-Squares and its Application...
2013
Stacking common-image gathers via the flatten-illumination-similarity method
Chengliang Wu, Huazhong Wang, Bo Feng, Chao Ning, Xianggong Tang
International Meeting for Applied Geoscience and Energy (IMAGE)
... least squares migration (LSM) (Schuster and Liu, 2019, Wang et al., 2016). Compared to migration methods, LSM has the ability to correct various...
2023
Abstract: Interpolation Using Hankel Tensor Completion; #90187 (2014)
Stewart Trickett and Lynn Burroughs
Search and Discovery.com
... using an Alternating Least Squares algorithm. The new interpolator can better handle large gaps and high sparsity than existing completion methods...
2014
Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015)
Marcus R. Wilson and Robert J. Ferguson
Search and Discovery.com
...Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015) Marcus R. Wilson and Robert J. Ferguson AAPG Search...
2015
Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)
Aaron Stanton
Search and Discovery.com
... artifacts. Least squares migration attempts to deal with these problems. Instead of simply using the adjoint operator, the inverse is sought by attempting...
2015
Time-Domain High-Resolution Radon Transform (Geophysics Paper 4)
Michel Schonewille, Peter Aaron, Carl Notfors
Geological Society of Malaysia (GSM)
... the data into 3 distinct events which can be muted before the inverse transform. Hampson formulated the parabolic decomposition using least squares...
2008
Abstract: Efficient Sampling of 3-D Basin Modelling Scenarios, by S. B. Nielsen and K. Gallagher; #90923 (1999)
Search and Discovery.com
1999
Abstract: Reverse Time Adjoint and Reverse Time Inverse Migration, by H. Liu andY. Luo, #90188 (2014)
Search and Discovery.com
2014
Abstract: Parallel Implementation of Pre-stack Least-squares Migration for Distributed Systems; #90171 (2013)
Sam T. Kaplan
Search and Discovery.com
... refer the interested reader to, for example, Kuehl (2002). MPI Processes Forward operator Adjoint operator Least-squares inverse Run-time Speed-up...
2013
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
... (least squares fk-filtering) and adaptive noise subtraction. The amount of ground roll energy was significantly reduced, but the filter introduces some...
2015
Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
...Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014) Abdolnaser Yousefzadeh and John C. Bancroft AAPG...
2014
Recent Advances and Experiences in Subsalt Seismic Imaging
Search and Discovery.com
N/A
Abstract: Monte Carlo Markov Chain Methods in Seismic Deconvolution; #90174 (2014)
Andres Medina and Mirko van der Baan
Search and Discovery.com
... of a linear filter. Wiener filtering is one of the most commonly applied techniques for wavelet removal as it can be shown to be optimal in a least squares...
2014
Abstracts: Ground Roll Attenuation Using LWD; #90173 (2015)
Ken Kocon and M. Sacchi
Search and Discovery.com
... Geophysicists (Ed.), 74th Annual International Meeting, Expanded Abstracts (2004). Theune, U., M. Sacchi, and D. Schmitt. “Least-squares local Radon transforms...
2015
Abstract: Time-varying Wavelet Estimation and Deconvolution; #90171 (2013)
Mirko van der Baan
Search and Discovery.com
... was an employee of the University of Leeds when the majority of this work was done. References Berkhout, A. J., 1977, Least-squares inverse filtering...
2013
Practical Application of Adaptive Least-Squares Reverse Time Migration (LSRTM) to Advance Field Development and Uncover New Reserves in the Subsalt Provinces
Chong Zeng, Shuqian Dong, Zhaohong Wu, Jean Ji, Darrell Armentrout, Bin Wang
GCAGS Transactions
...Practical Application of Adaptive Least-Squares Reverse Time Migration (LSRTM) to Advance Field Development and Uncover New Reserves in the Subsalt...
2016