Abstract: Statics Preserving Sparse Radon Transform; #90224 (2015)

Nasser Kazemi

Search and Discovery.com

... transformation without losing the data is not a trivial task. Hampson (1986) and Beylkin (1987) proposed a damped least squares solution to tackle the problem...

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...

Stabilizing two-term clock-drift inversion in ocean-bottom node processing

Beng Seong Ong, Zhaojun Liu, Carsten Udengaard

International Meeting for Applied Geoscience and Energy (IMAGE)

...., and Wheeler, T., 2019, Algorithms for optimization: The MIT Press. Levenberg, K., 1994, A method for the solution of certain problems in least squares...

Interpretation of Airborne Magnetic Data of Upper Benue Trough, Northeastern Nigeria, #10888 (2016).

Omeje Maxwell, E.S Joel, lusegun Adewoyin, O. Meludu, O. Meludu

Search and Discovery.com

..., The Least-squares Method of Interpreting Magnetic Anomalies Caused by Two Dimensional Structures: Geophysics, v. 34, p. 65-74. Nur, A., 2001...

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

Grant Myers, Kelsey Kehoe, Paul Hackley

Unconventional Resources Technology Conference (URTEC)

... the individual data spectrum and the NIPF result. URTeC 2903536 4 Partial Least Squares Analysis The method of partial least squares is useful...

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...

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...

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...

Robust multichannel prestack AVA inversion based on elastic L1/2 norm

Nanying Lan

International Meeting for Applied Geoscience and Energy (IMAGE)

... to solve a Tikhonov regularized least squares problem, which tends to produce an oversmooth solution. This solution can fuzz sharp formation boundaries...

3D Aeromagnetic Mapping of the Williston Basin Basement; #41588 (2015)

Jiakang Li, Igor Morozov

Search and Discovery.com

... is the background field, and η is the Euler structural index. The method operates by solving the above over-determined equation using the least-squares method...

Joint Impedance Inversion Transforms Aid Interpretation, by Satinder Chopra, Ritesh Kumar Sharma, Mohammad Hossein Nemati, and Peter Cary; #41667 (2015).

Search and Discovery.com

Predicting Estimated Ultimate Recovery from Flowing Material Balance Analysis Considering Rock and Connate Water Expansion for Unconventional Gas Reservoirs

Aykut Atadeger, Mustafa Onur, Leslie G. Thompson, Barry A. Ruddick

Unconventional Resources Technology Conference (URTEC)

... is presented in the next section. It is known that straight-line fitting by using the method of ordinary least-squares (OLS) is prone to giving an inacc...

Geothermal Characteristics of North Jiangsu Basin and its Tectonic Implications

Wang Yi-hua

Circum Pacific Council Publications

... solved using the least squares criterion presented by Tarantola and Valette (1982), to calculate the heat flow values. Thirty individual heat flow values...

Replacing Decline Curve Analysis

Randy Hazlett, Umer Farooq, D. Krishna Babu

Unconventional Resources Technology Conference (URTEC)

... and reduce it to inverse problem-solving mode using the IMSL nonlinear least squares regression routine, RNLIN, to solve for the basic parameter set: g, b, L...

Comparison of the Descriptors of Sediment Grain-Size Distributions: REPLY

Thomas A. Jones

Journal of Sedimentary Research (SEPM)

...-linear regression models in geology: Unpublished Doctoral Thesis, Northwestern University, 123 p. JAMES, W. R., 1968b, Least-squares surface fitting...

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...

Quantitative Analysis of a Cyclic Peritidal Carbonate Sequence, the Middle and Upper Devonian Lost Burro Formation, Death Valley, California--A Possible Record of Milankovitch Climatic Cycles

Wan Yang , Fraka Harmsen , Michelle A. Kominz

Journal of Sedimentary Research (SEPM)

... in the jth cycle (thickness,ij): Tcy =i=1n ·thicknessij j = 1, 2, ..., m (1) Positive least-squares regression was used by Kominz et al. (1991...

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...

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...

Enhancing full-waveform inversion with a deep-learning approximated inverse Hessian: A field data application

Mustafa Alfarhan, Matteo Ravasi, Fuqiang Chen, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... Least-Squares Migration (LSM), a demigration-migration approach can be employed to identify non-stationary local filters that approximate the inverse...

Application of Geophysical Method to Delineate Contamination in Waste Disposal Site of Ampar Tenang, Dengkil, Selangor D.E.

Abdul Rahim Samsudin, Umar Hamzah, Wan Zuhairi Wan Yaacob, Bahaa-eldin El Wali Abdel Rahim, Loh Yean Sze

Geological Society of Malaysia (GSM)

.... Electrical methods in geophysical prospecting. Oxford, Pergamon Press Inc. LOKE, M.H. AND BARKER, R.D., 1995. Least-squares deconvolution of apparent...

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...

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...

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...

Polarization Filter by Eigenimages and Adaptive Subtraction to Attenuate Surface-Wave Noise; #41565 (2015)

Stephen Chiu, Norman Whitmore, Michael Gurch

Search and Discovery.com

... use a time varying least squares Wiener match filter (Robinson and Treitel, 1980) because of its robustness in processing operations. The noise model...