Rock Physics Inversion: A Montney Case Study, #41295 (2014)

James Johnson, Lisa Holmstrom, Satwant Diocee, Rob Tilson, Sean Johnson

Search and Discovery.com

... coefficients, but instead of using a Weiner prediction filter with a least squares approximation the rank reduction method utilizes the singular value...

Abstract: Full Waveform Inversion of Crosswell Seismic Data Using Automatic Differentiation; #90187 (2014)

Danping Cao and Wenyuan Liao

Search and Discovery.com

... in which we minimize the least squares difference between the observed data and the synthetic seismogram, which is the result of the forward model using...

ABSTRACT: Gulf of Thailand - Bongkot Field Model-Based 3D Pre-Stack Simultaneous Inversion and Facies Classification, by Manickam, George Soosai; Nyein, Glenn; Berhanu, Solomon Assefa; Goswami, Saumya Kanti; Kwaela, Chaiwat; Bancelin, Jean-Pierre; Sognnes, Helge Ivar; Pooksook, Namfon; Utitsan, Seehapol; Limpornpipat, Orapan; #90155 (2012)

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Application of Real Time Mass Spectrometry During Development Drilling, Qannik Field, North Slope, Alaska, #90110 (2010)

Courtney Turich, Heather Perfetta, Dariusz Strapoc, Renee Hannon, Gerald Eric Michael

Search and Discovery.com

..., but typical of shallow marine progradational facies. Using the atomic mass unit data alone, a partial least squares (PLS) regression model was developed...

Abstract: Determination of Lacustrine Crude Oil Origin in Mixtures of Lacustrine and Marine Crude Oils using APPI (+) FT-ICR MS and Chemometric Tools; #91215 (2026)

J. Ataide Oliveira, J. Valente Roque, D. Danielle Mitze Muller Franco, L. Ferreira Matos, M. Duncan Rangel, J. Pimentel Lopes, Y. Massapust Rocha, I. Viegas, B. Gontijo

Search and Discovery.com

... MS. Two chemometric strategies were applied: multivariate curve resolution-alternating least squares (MCR-ALS) and partial least squares regression...

Comparison of Discovery Process Methods for Estimating Undiscovered Resources

P. J. Lee, D. Gill

CSPG Bulletin

... approach. Unpublished Ph.D. thesis, University of California at Berkeley, California, USA. 191 p. Marquardt, D.W. 1963. An algorithm for least-squares...

Use of extended source inversion for estimating the noise level in seismic data

Huiyi Chen, William W. Symes, Susan E. Minkoff

International Meeting for Applied Geoscience and Energy (IMAGE)

...://doi.org/10.1190/geo2016-0326.1. Golub, G., and V. Pereyra, 2003, Separable nonlinear least squares: the variable projection method and its...

Computer Modeling of Hydrocarbon Migration Pathways and Fluid Flow Histories from Carbon Isotope Anomalies in Gulf Coast Exploration Wells

D. F. Williams , Lerche , Z. Yu

GCAGS Transactions

... enter the modeling linearly so that a least squares approach is appropriate, others enter in a highly non-linear manner so that a more complex...

Utility of Mechanical Facies for Rock Classification, Characterization, and Correlation: Reservoir Characterization: Petrophysical Formation Evaluation and Rock Description

K. A. Alhilali, G. Shanmugam

AAPG Special Volumes

... reflect the different composition and matrix structure of each group, which they often do, then estimates of porosity, based on a least-squares line...

The Enigma of Oil and Gas Field Growth

Emil D. Attanasi, David H. Root

AAPG Bulletin

.... The resulting unrestricted least-squares growth functions End_Page 322------------------------------ are presented in Figures 1 and 2. Both the oil...

Convolution model theory-based intelligent AVO inversion method for VTI media

Yuhang Sun, Yang Liu, Hongli Dong

International Meeting for Applied Geoscience and Energy (IMAGE)

... or the least squares theory to optimize elastic parameters, aligning the synthesized seismic data with the field seismic data (Hu et al., 2011; Chen et al...

Survey merging using CycleGAN and patchy seismic images

Chaoshun Hu, Fan Jiang, Konstantin Osypov, Julianna Toms

International Meeting for Applied Geoscience and Energy (IMAGE)

... isolating trace segments in the defined window and derived by least-squares timedomain with a smoothness constraint. However, after applying those...

Prestack Depth Imaging Within the Makassar Straits, Eastern Kalimantan, Indonesia

Chris Willacy, Suryadi Oemar, A. Edy Hermantoro, Paul Gilleran

Indonesian Petroleum Association

... traveltimes which are then evaluated for a least squares fit with the observed traveltime picks. The model is automatically updated in depth...

2-D Geoelectrical Resistivity Survey at a Proposed New Condominium Site of Port Dickson Beach Resort, Negeri Sembilan

Abdul Rahim Samsudin, Umar Hamzah

Geological Society of Malaysia (GSM)

.... Proceedings: Denver, Colo., Environmental and Engineering Geophysical Society, CD-ROM, 22 p. Loke, M.H. and Barker, R.D., 1996, Rapid least-squares...

Retrieving high-resolution acoustic impedance using full-waveform inversion in presalt reservoir setting, offshore Brazil

Akshat Abhishek, Alok K. Soni, Rene-Edouard Plessix, Martijn Blaauw, Jaydip Guha, Gautam Kumar

International Meeting for Applied Geoscience and Energy (IMAGE)

... is within half of the wavelength) between observed and modeled data (Mora, 1988). A typical time-domain FWI least-squares objective function (Pratt...

Improvements on airborne gamma-ray spectrometry inversion

Jessica D. Weihermann, Yaoguo Li, Saulo P. Oliveira, Francisco J. F. Ferreira, Adalene M. Silva

International Meeting for Applied Geoscience and Energy (IMAGE)

...; 1 ≤ j ≤ M is the matrix defining the contribution of j’th prism to i’th count (Weihermann et al., 2021b). The solution obtained through the least-squ...

Comparative Experimental Investigation of Damage Variables for Sedimentary and Geothermal Rock Specimens Based on 3D-DIC

Fatick Nath, Eleazar Cabezudo, Nora Garcia Romero

Unconventional Resources Technology Conference (URTEC)

... least squares and pointwise least squares for displacement field and strain field measurements. Opt. Lasers Eng. 2009, 47, 865– 874. Song, Y. Sungjun...

Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)

Hassan Khaniani, John C. Bancroft, and Eric von Lunen

Search and Discovery.com

...) to estimate high resolution subsurface properties from waveform information contained in seismic data. FWI is a least-squares approach to minimize...

Spectral hydrology: Resolution and uncertainty in multifrequency oscillatory hydraulic tomography

Jeremy R. Patterson, Michael Cardiff

International Meeting for Applied Geoscience and Energy (IMAGE)

....” In field data, the head phasors are readily extracted through FFT or least squares analysis. These observed phasors provide the necessary inputs for OHT...

Hydraulic fracture plane identification based on unsupervised learning

Zizhuo Ma, Tao Liu, Junzhou Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... on the least squares interference method, we obtained the highprecision acoustic emission source location (Figure 6a). We first fit a hydraulic fracture...

Multiscale Characterization of Spatial Heterogeneity of Petroleum Source Rocks via Near-Infrared Spectroscopy

Yashar Mehmani, Alan K. Burnham, Michael D. Vanden Berg, Hamdi A. Tchelepi

Unconventional Resources Technology Conference (URTEC)

... in mapping the spatial distribution of organic content at the core-scale with O(100µm) resolution. We apply the method to the immature oil shale of the Green...

Quantitative Determination of Calcite-dolomite-apatite Mixtures by X-ray Diffraction

S. H. Bromberger, John B. Hayes

Journal of Sedimentary Research (SEPM)

... computer using a least-squares program designed by J. Hurt of the Mechanical Engineering Department, University of Iowa. FIG. 2. Curve for determination...

Using Multiple Downhole VSP Arrays for Monitoring and Locating Passive Microseisms in the Oil Reservoirs; #41561 (2015)

Zuolin Chen

Search and Discovery.com

... x 4 matrix of partial derivatives of t with respect to the four components of θe(xe,ye,ze,t0e) at final iteration of a least-squares hypocenter...

Determination of Calcite, Dolomite, Quartz and Clay Content of Carbonate Rocks

Frank E. Diebold, John Lemish, Carl L. Hiltrop

Journal of Sedimentary Research (SEPM)

... are the best fits of the experimental data, were constructed by the method of least squares and their respective confidence bel s were constructed by method...

Continuous Lookback, Calibration, and Adjustment Reduces Biases and Improves Reliability of Production Forecasts

Malik Alarfaj, Duane A. McVay

Unconventional Resources Technology Conference (URTEC)

... and McVay (2020) showed that CB can be estimated from the slope of the least-squares best-fit line of the calibration curve and DB can be estimated from...