Magnetotelluric inversion using supervised learning trained with random smooth geoelectric models

Lian Liu, Bo Yang, Yixian Xu, Dikun Yang

International Meeting for Applied Geoscience and Energy (IMAGE)

... usually employ the gradient-based deterministic method (Tikhonov & Arsenin 1977; Constable et al. 1987; Newman & Alumbaugh 2000; Rodi & Mackie 2001...

Finite-frequency transmission traveltime tomography in VTI media

Fei Luo, Lanlan Yan, Jiexiong Cai

International Meeting for Applied Geoscience and Energy (IMAGE)

... conjugate gradient method (PCG) to solve. T r , x s    u H 0 xx  x, t ; x s 0  x, t ; x r  dt ,  0 (5.2) Fourth International Meeting...

Plate Kinematics of the Gulf of Mexico Based on Integrated Observations from the Central and South Atlantic

Erik A. Kneller, Christopher A. Johnson

GCAGS Transactions

... the conjugate margins of the Central and North Atlantic oceans and Labrador Sea: Tectonics, v. 8, p. 1059–1077. Engebretson, D. C., A. Cox, and R. G...

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

Juefu Wang and Mark Ng

Search and Discovery.com

... Summary We propose a greedy inversion method for sparse linear problems. The kernel of the method is based on a conventional iterative algorithm...

Basin evolution in the Davis Strait area (West Greenland and conjugate East Baffin/Labrador passive margins) from thermostratigraphic and subsidence modelling of well data: Implications for tectonic evolution and petroleum systems

E. D. McGregor, S. B. Nielsen, R. A. Stephenson

CSPG Bulletin

...Basin evolution in the Davis Strait area (West Greenland and conjugate East Baffin/Labrador passive margins) from thermostratigraphic and subsidence...

Reducing parameter coupling effect for subsoil density estimation using 3D seismic full-waveform inversion with horizontal-force source

Y. Kawasaki, S. Minato, R. Ghose

International Meeting for Applied Geoscience and Energy (IMAGE)

... conjugate gradient (CG) method to obtain ∆𝑚𝑚 𝑘𝑘 . The diagonal Hessian inverse is applied as a preconditioner; it is calculated based on the partial...

Data-embedded physics-informed neural network for electromagnetic wave propagation simulation: Potentials and challenges

Yawei Su, Wenyi Hu, Jiefu Chen, Aria Abubakar

International Meeting for Applied Geoscience and Energy (IMAGE)

... along the other well. Therefore, the forward simulation needs to be implemented at least 200 times to compute the gradient for each inversion iteration...

Application of least squares one-way wave migration in irregular sampling data of Bohai Bay Basin

Lv Yongchang, Li Daoshan, Wang Yongming, Meng Jie, Feng Xukui, Hu Dan, Wu Xiaofeng, Kong Zhaoju

International Meeting for Applied Geoscience and Energy (IMAGE)

... optimization problems: 1 2 min F  m   Lm  d m 2 In general, the gradient descent method is used to solve the optimization problem: m k 1  m k   LT  Lm...

Asymmetrical Conjugate Margins of the South Atlantic: Effects of Variable Basement Architecture and Magmatic Additions on the Continental Rifting Process and Petroleum Systems

Search and Discovery.com

A novel vector PP imaging condition for elastic reverse-time migration

Bingkai Han, Weijian Mao, Xiao-Bi Xie

International Meeting for Applied Geoscience and Energy (IMAGE)

... to investigate various elastic FWI gradient terms in angle domain, and propose a novel PP imaging condition for elastic RTM. Method In the density-Lamé...

Fault displacement gradients on normal faults and associated deformation

Alan P. Morris, Ronald N. McGinnis, and David A. Ferrill

AAPG Bulletin

...) an earlier set that formed in response to a displacement gradient in the slip direction, and (2) a later set of oblique faults that formed...

Efficient and accurate velocity building from Gramian-constrained multiphysics reflection and transmission data

Jide Nosakare Ogunbo

International Meeting for Applied Geoscience and Energy (IMAGE)

... between 𝑎 and 𝑏. Given all the terms above, an iterative regularized conjugate gradient method has been reportedly used to find the reflection...

Numerical experiments on 3D frequency domain multiparameter full-waveform inversion in viscoelastic media in parallel environments

Guoqi Ma, Bing Zhou, Jamal Zemerly, Mohamed Kamel Riahi

International Meeting for Applied Geoscience and Energy (IMAGE)

... Re[ ] means the real part of a complex value. The solution of equation (6) can be found by using conjugate gradient (CG) method, in which Hessian mat...

Memory-efficient frequency-domain least-squares RTM using low-rank Greens functions via randomized SVD

Daniel E. Revelo, Reynam C. Pestana, Diego F. Barrera, Rodrigo S. Santos

International Meeting for Applied Geoscience and Energy (IMAGE)

... = LT dobs , where T means the conjugate transpose. Although the RTM method has been considered the most accurate imaging technique, the seismic...

Abstract: Re-stitching the Newfoundland-Ireland conjugate margins back together with geophysical megatransects and plate reconstructions

Kim J. Welford, Alexander L. Peace, Heide MacMahon, Larry Sandoval, Pei Yang

Atlantic Geology

...Abstract: Re-stitching the Newfoundland-Ireland conjugate margins back together with geophysical megatransects and plate reconstructions Kim J...

ABSTRACT: Characteristics and Origins of 'Graben Shift' Geometries, Funan Field, Pattani Basin, Thailand, by A. Kornsawan and C. K. Morley; #90913(2000).

Search and Discovery.com

Abstract: Tweaking Pangeas Breakup: Triassic to Present Plate Tectonic Reconstructions Integrating Recent Geologic, Geophysical, and Hydrocarbon Data from the Atlantic and Gulf of Mexico Conjugate Margins; #90285 (2016)

Paul Mann, Andrew Steier

Search and Discovery.com

... Data from the Atlantic and Gulf of Mexico Conjugate Margins; #90285 (2016) Paul Mann, Andrew Steier AAPG Datapages/Search and Discovery Article #90285...

Basement Structure Offshore Dahomey Basin, Nigeria: New Insights from Aeromagnetic and 3D Seismic Interpretation

Eze Okoro, Jibrin Babangida, Mosto Onuoha

International Meeting for Applied Geoscience and Energy (IMAGE)

... to magnetic sources and sedimentary thickness was determined using the source parameter imaging (SPI) method. Volumetric attributes analysis enabled mapping...

Poisson binomial-based random undersampling scheme for near-surface compressive sensing

Sayan Mukherjee, Yunyue Elita

International Meeting for Applied Geoscience and Energy (IMAGE)

... thresholding algorithm (ISTA), and preconditioning conjugate gradient method (Kim et al., 2007). However, besides sparse transform...

Subsurface temperature from seismic reflections: Application to the post-breakup sequence offshore Namibia

Arka Dyuti Sarkar and Mads Huuse

AAPG Bulletin

... hydrate stability zone (GHSZ) can be used for geothermal gradient estimation (Yamano et al., 1982; Calvès et al., 2010; Hodgson et al., 2014; Serié et al...

Integrated Interpretation of Seismically Derived Rock and Fracture Attributes for Shale Gas Reservoir Characterization

Gang Yu, Yusheng Zhang, Xing Liang, Uwe Strecker, Maggie Smith

Unconventional Resources Technology Conference (URTEC)

... (N40E) orientation approximates the conjugate fracture orientation of a wrench-faulted tectonic regime; this map pattern suggests a clockwise net...

Audiomagnetotelluric Investigation of Snake Valley, Eastern Nevada and Western Utah

Darcy K. McPhee, Keith Pari, Frank Baird

Utah Geological Association

... models were computed using the data from the transverse-electric (TE), transverse-magnetic (TM), and combined (TE+TM) mode using a conjugate gradient...

Basement Faults and Smackover Structure

Phillip T. Fowler

GCAGS Transactions

..., this method has not found many Smackover fields. A more subtle error is to assume that Smackover and Cretaceous structure differ only in degree...

Conjugate Fracture Pairs in the Molina Member of the Wasatch Formation, Piceance Basin, Colorado: Implications for Fracture Origins and Hydrocarbon Production/Exploration

John C. Lorenz

Four Corners Geological Society

...Conjugate Fracture Pairs in the Molina Member of the Wasatch Formation, Piceance Basin, Colorado: Implications for Fracture Origins and Hydrocarbon...

Acoustic target-level full-waveform inversion: Applied to ocean-bottom seismic data

Carlos A. N. da Costa, João M. de Araújo, D.J. Verschuur, Aydin Shoja

International Meeting for Applied Geoscience and Energy (IMAGE)

... of adjoint-state method (Plessix, 2006), the l th component of the gradient vector is given by: ℜ ω, j vs j ,l T B(m)−1 T ATj As j Ps j − P...