1-20 of 1226 Search Results for

Fourier analysis/es

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426296
... es- crete Fourier transform (Sirgue et al., 2008), we can extract timated thanks to four wave eld simulations. Different from the Fourier-domain components of the wave elds on-the- y frequency-domain implementation, it is not feasible to store and save them for several frequencies due to the band...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2988015
... ABSTRACT We develop embedded boundary and discontinuous mesh methods to handle arbirarily shaped topography and accurately simulate acoustic seismic wave propagation in Laplace-Fourier domain. The purpose of the embedded boundary method is to enhance accurate wave simulation near the surface...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-2936
... Remote Sensing. Dutt, A., and V. Rokhlin, 1993, Fast Fourier transforms for nonequispaced data: SIAM Journal on Scientific Computing, 14, 1368 1393. 1995, Fast Fourier transforms for nonequispaced data II: Applied and Computational Harmonic Analysis, 2, 85 100. Smith, H., 1998, A parametrix construction...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-3085
...- gorithm attempts to estimate the spatial Fourier spectrum (i.e. the f -kx-ky domain). The increased data from additional di- mensions (e.g. offset and azimuth) stabilizes the transform es- timation (Trad, 2009). This technique is subject to the fol- lowing contraints: Its inverse Fourier transform should...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 20–22, 2009
Paper Number: SPE-121670-MS
... ion cyclotron resonance mass spectrometry Marshall cyclotron resonance mass spectrometry cyclotron resonance mass spectrometry protocol SPE 121670 Development of Fourier Transform-Ion Cyclotron Resonance Mass Spectrometry Protocol for the Analysis of Asphaltene Field Samples and Solubility...
Journal Articles
Journal: Corrosion
Corrosion 62 (07).
Paper Number: NACE-06070559
Published: 01 July 2006
... content of -FeOOH. Actually, the content ratio of -FeOOH to -FeOOH in rust (noted /) was used 1 7 2006 1 7 2006 2006. NACE International. Miyakojima fourier transform infrared morphology exposure site adsorption steel alloy data quality particle Ishikawa corroded amount...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 5–8, 2003
Paper Number: SPE-84471-MS
... variable in the general case. In cases with no rate measurements, we use a "blind" deconvolution method to restore the pressure response free of wellbore storage distortion. Our technique detects the afterflow/unloading rate function using Fourier analysis of the observed pressure data. The technique can...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-1881
... applying n fan filters using the slow Fourier transform. The cost of using the screen operator (equation 18) is similar to that of the general operator but with the benefit of the fast Fourier transform. Compared to the two previous methods, statics corrections are essentially free of charge. Analysis of...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1815
... method. It tak es into accoun tthe m ultipleforw ard scattering due to lateral slowness perturbations. Its stabilit y is con trolled m uch more easily than that of the extended local Born Fourier method. Under the small angle appro ximation,the ex- tended local Rytov Fourier method converges to the split...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 2–5, 1988
Paper Number: SPE-18120-MS
... data must be rapid and cost-effective. P. 141 concentration upstream oil & gas application spe 18120 infonnation clay mineral ftir analysis data quality calculation mineral analysis fourier transform infrared spectroscopy particle size mineral log analysis quantitative...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7787
... (protonated), and the resulting ES form is highly electrically conductive. The synthesized PAni additives and coated panels were characterized by X-ray diffraction pattern (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), thermal gravimetric analysis (TGA) and other normal coating...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 9–11, 2015
Paper Number: SPE-174439-MS
...-containing ES-SAGD application, it is also necessary to understand the interaction of asphaltenes with reservoir clays. The presence and absence of clays in the asphaltenes were confirmed with an FTIR (Fourier Transform Infrared Spectroscopy). To confirm the presence or absence of clays, reference FTIR...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, February 15–16, 2017
Paper Number: SPE-184963-MS
... steam/oil ratio (SOR) of ES-SAGD in some ultra-thick reservoirs may be unfavorable even compared with that of SAGD. On the basis of analysis for heat loss rate to the overburden and inside the chamber, several guidelines are presented to select solvent for ES-SAGD process. The proposed guidelines will...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13862335
... the traveltimes in anisotopic adjoint stereotomography. Slopes at source/receiver positions for a given scatterer are es- timated in a finite-difference sense: we compute the traveltime fields generated by the left and right neighbor sources/receivers of the current source/receiver, Fig. 1 and...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200451-MS
... Mass Spectrometry , 2011 . 46 ( 4 ): p. 337 - 343 . 46. Gaspar , A. and W. Schrader , Expanding the data depth for the analysis of complex crude oil samples by Fourier transform ion cyclotron resonance mass spectrometry using the spectral stitching method . Rapid Communications in...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (02): 563–590.
Paper Number: SPE-203848-PA
Published: 14 April 2021
... Canada. Produced water from systems that used nonencapsulated breaker had little residual solids (<0.3 g/L) and high degrees of hydrolysis, as shown by Fourier-transform infrared (FTIR) spectroscopy. Where an encapsulated breaker was used, more colloidal solids (1.1–2.2 g/L) were found with lower...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1667
...=1.4874x+6.1849 R2=0.1127 R=0.34 Fractal dimension Fig. 13 Correlation diagram of three-way synthetic Fourier spectrum and fractal dimension y = 4.2263x + 8.5682 R² = 0.5512 12 13 14 15 1 1.05 1.1 1.15 1.2 1.25 1.3 R 0.74 y=4.2263x+8.5682 R2=0.5512 R=0.74 3 w ay s yn th es is Fo ur ie r s pe ct ru m Fo ur...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428426
... formulation of source radiation pattern in wave equation is not available. We present how source radiation pattern can be formulated in the wave equation for numerical simulation. We expand source radiation pattern into Fourier series with a sum of sine and cosine functions. We then formulate the source...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2559-MS
.... Characterization of the geochemical alterations are performed using in-situ infrared spectroscopy (IR), feature relocation scanning electron microscopy (SEM), and surface area and pore size analysis using volumetric gas sorption and density functional theory (DFT). Methods In this work, in-situ Fourier Transform...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-4360
... A multi-scale strategy for handling broadband seismic data Virieux J. , S. Operto , A. Asnaashari , R. Brossier , C. Castellanos , V. Etienne , Y. Gholami , G. Hu ,2 , D. Pageot , V. Prieux , A. Ribodetti , A. Roques ISTerre, Universite´ Joseph Fourier - CNRS Ge´oazur - Universite...

Product(s) added to cart

Close Modal