A mechanical basis of fault-bend folding

N. P. Benesh, and J. H. Shaw

AAPG Bulletin

... modified after Suppe (1983). We calculate S using a least-squares criterion and find that the trends in Γ for each ϕ value share very similar slope values...

CSPG/CSEG/CWLS GeoConvention 2012, May 14-18, 2012 Calgary TELUS Convention Centre & ERCB Core Research Centre, Calgary, Alberta, Canada; - Abstracts, #90174 (2014).

Search and Discovery.com

GeoConvention 2014; - Abstracts, #90224 (2015).

Search and Discovery.com

AAPG International Conference and Exhibition; - Abstracts, #91209 (2025).

Search and Discovery.com

Kinematic, Chemical, and Petrological Development of Protomylonite Within the Scove Canyon Segment of the Cuyamaca-Laguna Mountains Shear Zone, Peninsular Ranges, Southern California

Shane M. Howell, Corrin S. Gallarano, Gary H. Girty

Pacific Section SEPM

... in the elemental masses of Ba, Sr, Eu, Cu, and Ni were indicated by least squares analysis, and, though not well understood, may be the result...

Time Lapse Geochemistry Production Allocation; End Member Definition and Selection; Case Studies; Delaware Basin and Eagle Ford

Adam Turner, Catherine Donohue, J. Alex Zumberge, Andrew Muñoz, Philip Bergeron

Unconventional Resources Technology Conference (URTEC)

... are then used as endmembers for production allocation. In this study, the Alternate Least Squares (ALS) allocation method is used. ALS evaluates the goodness...

Comparison of the Descriptors of Sediment Grain-size Distributions

Thomas A. Jones

Journal of Sedimentary Research (SEPM)

... Doctoral Thesis, Northwestern University, 123 p. JAMES, W. R., 1968b, Least squares surface fitting with discontinuous functions: Office of Naval...

Crustal Structure Study on Gulf Coast of Texas

A. L. Hales , C. E. Helsley , J. B. Nation

AAPG Bulletin

...), the intercepts being 7.80 and 7.82 sec respectively, as determined by least squares. At the buoys the break is to slightly lower velocities...

Development Saturation Pressure Correlations for Reservoir Fluids from Unconventional Reservoirs

Nelson Mejia-Martinez, Thomas A. Blasingame

Unconventional Resources Technology Conference (URTEC)

... yields the "least squares" approach). The more common statistical term for an "error function" is that of an "objective function," where (obviously...

Chapter Nine: Inversion and Interpretation of Impedance Data

Rebecca B. Latimer

AAPG Special Volumes

... are beneficial because they are fast and they are an improvement over recursive inversions. Least-squares inversion. Least-squares inversion methods are similar...

An equation for deriving spatial variations in carbonate production rates from sediment deposition rates and dilution: Application to Santa Maria Island, Azores

Neil C. Mitchell, Rui Quartau, Sandra Moreira, Christoph Beier, Zhongwei Zhao, Sérgio Ávila, Elsa-Marie Portanyi, Aurora Rodrigues

Journal of Sedimentary Research (SEPM)

... in Manchester. The x symbols show the data of Beier et al. (2013) for the sites marked in Figure 4. Straight lines are least-squares regressions...

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

...: Oklahoma City Geological Society, p. 32-51. Savitzky, A., and M. J. E. Golay, 1964, Smoothing and differentiation of data by simplified least-squares...

FWI for the complex Walker Ridge salt province using streamer data

Dorothy Ren, Xin He, Siyun Xu, Fei Gao, Feng Lin, Jiawei Mei

International Meeting for Applied Geoscience and Energy (IMAGE)

... the illumination power of existing data through least-squares fitting of the full-wavefield data. Reprocessing using an iterative TLFWI and FWI-guided...

Generative modeling for inverse problems

Rami Nammour

International Meeting for Applied Geoscience and Energy (IMAGE)

... of acoustic data (pressure or displacement). This IP is nonlinear and large scale. Formulating its solution as an output least squares optimization problem...

Phase-encoded waveform inversion for multiples

Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

.../10.1190/segam2016-13859255.1. Dai, W., X. Wang, and G. T. Schuster, 2011, Least-squares migration of multisource data with a deblurring filter: Geophysics, 76, no. 5, R135...

Velocity model building with a time shift objective function: Gulf of Mexico examples

Yi Yang, Ken Matson, Tadas Krupovnickas, Mark Huiskes, Rene-Edouard Plessix, Sijmen Gerritsen

International Meeting for Applied Geoscience and Energy (IMAGE)

... significant kinematic mismatches between field and synthetic data, leading to the problem of cycle-skipping in classic least squares Full Waveform Inversion...

Seismic erratic noise suppression based on Laplacian-scaled mixture prior

Haotian Xu, Weiwei Xu, Wenchao Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... be removed using the least-squares estimator. Basis pursuit denoising (BPDN) is an important method for noise suppression (Chen et al. 2001), which...

Modeling-based amplitude recovery (MBAR)

Yonghe Sun, Zhemin Tan, Jeff Nealon, James Davenport, Mark Fan, Yuli Zhang, Brian Church

International Meeting for Applied Geoscience and Energy (IMAGE)

..., overburden wave propagation, and processing algorithms. Waveform inversion (Tarantola, 1984) and least-squares migration (Nemeth et al., 1999) calibrate field...

A recipe for practical iterative LSRTM with synthetic and real data examples from Brazil

Valeriy Brytik, Gopal Palacharla, Rishi Bansal, Diwi Snyder, Xu Li, Young Ho Cha, Partha Routh, Inma Dura-Gomez, Dmitriy Pavlov, Carey Marcinkovich

International Meeting for Applied Geoscience and Energy (IMAGE)

..., 𝑚 is the reflectivity model, and 𝑑 is the observed seismic data. The least-squares solution to the problem defined in the above equation can...

Santos Vision: Innovative Seismic Data Processing in a Super Giant Oil Basin

Hermann Lebit, Sriram Arasanipalai, Jeff Tilton, Pascal Ollagnon, PGS

GEO ExPro Magazine

... of the dataset to more than 60,000 km2 of full and seamless coverage is in progress. The recent application of PGS Least-Squares Migration (LSM) to a subset...

Accelerated augmented Lagrangian full-waveform inversion based on truncated randomized singular value decomposition

Jiahang Li, Hitoshi Mikada, Junichi Takekawa

International Meeting for Applied Geoscience and Energy (IMAGE)

... is becoming more and more mature; however, the minimization process of FWI, which uses a least-squares algorithm, still suffers from problems...

A Rb-Sr Whole-Rock Age Dtermination for the Rainy Creek Alkalic-Ultramafic Complex, Montana

M.D. Fenton, G. Faure

Rocky Mountain Association of Geologists

... e r r o r ( 1 s t a n d a r d deviation) isochron were calculated by least squares regressIOn were least squares regression (York, 1966), aSSuming...

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...

Detecting igneous rocks in the presalt with elastic FWI

Gabriel Pacheco, Ana Araújo, Diego Costa, Karine Pereira, Luis Cypriano

International Meeting for Applied Geoscience and Energy (IMAGE)

... algorithms, such as Time-Lag FWI (TLFWI, Zhang et al., 2018) and Least-Squares RTM (LSRTM, Wang et al., 2016), have helped overcome many imaging challenges...

Presalt time-lapse seismic monitoring with joint 4D FWI

Filipe Rudrigues, Gabriel Brando, Danilo Albuquerque, Danilo Froes, Benjamin Huard, Luis Cypriano, Roberto Pereira, Adel Khalil

International Meeting for Applied Geoscience and Energy (IMAGE)

... different types of surveys. Wang et al. (2017) show the importance of least-squares migration (LSM), as well as dedicated 4D processing, to attenuate...