Practical Application of Adaptive Least-Squares RTM to Advance Field Development and Uncover New Reserves in the Sub Salt Provinces

Search and Discovery.com

Anisotropic Multi-Azimuthal Velocity Model Building and Depth Imaging on Tulip 3D Coil Shooting Survey

Michele Buia, Suyang Chen, Olga Zdraveva, Swee Leng Ng, Martin Bayly, Michelle Tham

Indonesian Petroleum Association

...” Grid Tomography to update the model. The Grid Tomography used a damped least-squares solver at progressively finer scale lengths, with a preconditioning...

Facies-based inversion through integrating elastic full-waveform inversion and high-frequency imaging data

David Tang, Valeriy Brytik, Olivier Burtz, Young Ho Cha, Partha Routh, Ratnanabha Sain, Jay Barr, Dez Chu, Michael Gutierrez, Jeffrey Sitgreaves, Jacob Utley, Guy Medema, Alison Scribner

International Meeting for Applied Geoscience and Energy (IMAGE)

... these issues, we integrate low-frequency eFWI models, facies information from wells, and least-squares reverse time migration (LSRTM) imaged stacks...

Quantifying multiple source rock contributions to petroleum fluids: Bias in using compound ratios and neglecting the gas fraction

Andrew P. Murray and Kenneth E. Peters

AAPG Bulletin

... genetic classifications. Mixture deconvolution by alternating least squares regression of ratios can seriously underestimate the contribution of the gas...

3D Seismic Data Interpolation by Frequency Domain Local 2D Prediction

Xishuo Wang

Search and Discovery.com

... the seismic trace is FFT’ed from time to the frequency domain. Spatial prediction can then be done in any number of dimensions, at most in 4D or at least...

3D Seismic Data Interpolation by Frequency Domain Local 2D Prediction

Xishuo Wang

Search and Discovery.com

... the seismic trace is FFT’ed from time to the frequency domain. Spatial prediction can then be done in any number of dimensions, at most in 4D or at least...

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...

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...

ABSTRACT: Pyrite Grain-Size Distribution and Pyritic Sulfur Reduction in Ohio Coals: A Statistical Relationship

Mainak Mazumdar, Richard W. Carlton, Gino A. Irdi

The Society for Organic Petrology (TSOP)

... analysis was used to obtain the relationship between 0 and 6, aryd pyritic sulfur reduction at 1.60. A least squares regression equati~n was obtained...

Physics-Informed Machine Learning Approach for Closed-Loop Reservoir Management Using RGNet

Zhenyu Guo, Sathish Sankaran

Unconventional Resources Technology Conference (URTEC)

.... (2002). Weighted least squares support vector machines: robustness and sparse approximation. Neurocomputing, 48(1), 85–105. Suykens, J. A. K...

Improved Calibration of the Absolute Thermal Maturity of Coal-Sourced Oils and Gas Condensates Using PLS Regression; #10480 (2013)

R. Sykes and K.-G. Zink

Search and Discovery.com

... a new method for predicting absolute maturities of coal-sourced oils and gas condensates based on Partial Least Squares (PLS) regression. The use...

Current Uses of Computers by Exploration Geologists

J. M. Forgotson, Jr. , C. F. Iglehart

AAPG Bulletin

...: Management Science, v. 12, no. 8, p. 13-312 and p. 13-322. Peikert, E. W., 1963, IBM 709 program for least-squares analysis of three-dimensional...

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...

Integrated Workflows for Drilling Optimization and Enhanced Production

Jakob Heller, Venkatesh Anantharamu, Andrew Lewis, Bruce Karr, Ron Bianco

Unconventional Resources Technology Conference (URTEC)

... suppress the noise in the lower frequency spectrum below 15Hz. De-noising was performed based on noise considerations by running a smoothing filter...

Machine Learning Based Decline Curve - Spatial Method to Estimate Production Potential of Proposed Wells in Unconventional Shale Gas Reservoirs

Y. Kocoglu, M. E. Wigwe, G. Sheldon, M. C. Watson

Unconventional Resources Technology Conference (URTEC)

.../10.2118/179958-ms Cressie, N. (1985). Fitting variogram models by weighted least squares. Mathematical Geology, (17), 563–586. Cressie, N., & Wikle, C. K. (2011...

Spectral Analysis of the Middle Triassic Latemar Limestone

Linda A. Hinnov, Robert K. Goldhammer

Journal of Sedimentary Research (SEPM)

... Scienze Naturali, Sez. A, v. 42, p. 113-162. BARRODALE, I., AND ERICKSON, R.E., 1980a, Algorithms for least-squares linear prediction and maximum...

Micro transient EM for seismic sand corrections through physics-coupled deep learning

Daniele Colombo, Ersan Turkoglu, Ernesto Sandoval-Curiel, Javier Giraldo-Buitrago

International Meeting for Applied Geoscience and Energy (IMAGE)

... and physics-driven least-squares inversion. The procedure provides a sharp mapping of the shallow BoS resulting in the improvement of the seismic images...

Scalable, efficient, and adaptive simulation of frequency-domain wave propagation

Jacob Badger, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

... of a weighted least squares system: Leading direct sparse solvers can factorize linear systems arising from three-dimensional problems in O(ω6...

Demultiple of High Resolution P-Cable Data in the Norwegian Barents Sea „ An Iterative Approach

A.J. Hardwick, S. Jansen, B. Kjolhamar

Petroleum Exploration Society of Australia (PESA)

... ratio. is applied on cascaded 2:1 of SRME Figure 3: Iterative multiple prediction and top of the least-squares adaption result adaptive subtraction...

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

Sam T. Kaplan

Search and Discovery.com

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

Regularization strategies for Seis2Rock-based petrophysical inversion of prestack seismic data

Miguel Corrales, Juan Romero, Nick Luiken, Hussein Hoteit, Matteo Ravasi

International Meeting for Applied Geoscience and Energy (IMAGE)

... of least-squares optimization with a Laplacian regularizer to promote smoothness in the solution and counteract noise in the data. This study assesses...

Interbed multiple attenuation with an automatic spatially adaptive thresholding operator: A case study in the North Louisiana Salt Basin

Joel Latchman, Rika Burr, Jonathan Woolley, Anna Nolan, Bin Gong, Jinming Zhu, Fang Yuan

International Meeting for Applied Geoscience and Energy (IMAGE)

... energy but perform poorly in areas with similar dip. We present a novel method based on Least-Squares subtraction that automatically adapts the predicted...

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...

Abstract: Coherence and Measures of Coherence: An Advanced 3D Interpretive Processing Application

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... by fitting planes using orthogonal least squares based on the Hotelling (Karhunen-Loeve) Transform. The technique for finding this transformation...

Thermal Subsidence: Chapter 4

Charles L. Angevine, Paul L. Heller, Chris Paola

AAPG Special Volumes

... a tectonic subsidence data set in a least-squares sense. There is nothing sacred about least-squares curve-fitting techniques. In the real world...