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Residual migration/es

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Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 9–11, 2015
Paper Number: SPE-174439-MS
... Abstract This paper examines the wettability change during Steam Assisted Gravity Drainage (SAGD) and Expanding Solvent - SAGD (ES-SAGD). The qualitative and the quantitative analyzes of residual oil for steam and steam-solvent coinjection cases are achieved to investigate the impact of clay...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2337
... ability to compress solutions of certain PDEs. This premise is related to two recent developments. First, there is the new field of compressive sensing (CS in short throughout the paper, Cand`es et al., 2006; Donoho, 2006)—where the argument is made, and rigorously proven—that compressible signals can...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-030
... zweimessigen felsigen bruchen wird von Amadei und Saeb Vorgestellt. Es legt von kuepplungen zwischen normalen und tangentialen verhalten und auch basichen verfahren von rauheiten verwitterung ab. In diesem artikel wird die verallgemeinerung zu dreimessigen raumlehren und auch zu zyklischen belastungen...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9408
... in this paper are solely those of the author(s) and are not necessarily endorsed by the Association. transgranular SCC. The transgranular features were only observed near the specimen surface, which is consistent with a limitation of salt migration to the center of the ESE(T) specimen. Figure 6: Intergranular...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-102
... 20 30 40 R ep la ce m en t R at io Location, mm CO2_10MPa_30ml (c) 15ml injection (d) 30ml injection -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0 10 20 30 40 R es id ua l S at ur at io n R at io Location, mm Water_10MPa_40ml -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0 10 20 30 40 R es id ua l S at ur at io n R at io...
Proceedings Papers

Paper presented at the 1994 SEG Annual Meeting, October 23–28, 1994
Paper Number: SEG-1994-0097
... and the downgoing mul- tiple reflections. 3 . 2 B a c k g r o u n d V e l o c i t y D i s t r i b u t i o n E s t i m a t i o n . The background velocity or migration velocity can be es- timated either from the sonic log or from the direct waves by traveltime inversion. Both options have advantages...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13863690
... 0.2 0.4 0.6 0.8 1 Iteration R es id ua l LSRTM RLSRTM 0 5 10 15 20 25 0.99 0.991 0.992 0.993 0.994 0.995 0.996 0.997 0.998 0.999 1 Iteration R es id ua l LSRTM RLSRTM Figure 5: Data residual convergence curves: the simultaneous-source data with different regularization parameters (a), the incomplete...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3593317
... extracted from the convolutional layers are passed into a fully-connected layer which then provides an output scalar Ire f (x, z) = Ix, z), x, z), (2) to a sigmoid activation function which classi es the image as focused or unfocused. Given that all axes of the data are pro- where Ire f (x, z) is the output...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1123
... includes unifying 6 individual seismic surveys of various vintages for prestack depth migration: ES (East Shukheir), EM (East Morgan), JR (July Ramadan), SG300 (shallow water), July OBC (Ocean Bottom Cable) and GS277. The overlaps of the individual surveys (figure 2) were advantageous to the calculation...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-3095
... (Shallowest) VIVSP Slower Velocities RVSPFaster Velocities Residual Bulge 2 kmRe si du al tr an si t t im es (s ) R es id ua lt ra ns it tim es (s ) 3097SEG/San Antonio 2007 Annual Meeting Depth mapping Sisi-Nubi low relief structure in the context of shallow gas and fault shadow travel time. Finally...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-2204
.... Signal Processing, pages 1519-1543, 2002 [2] E. Cand es and L. Demanet, Curvelets and Fourier Integral Operators ,C. R. Acad. Sci. Paris, Ser. I 336 (2003) 395-398 [3] J.E. Rickett, Illumination-based normalization for wave-equation depth migration, Geophysics, vol.68, No.4, P.1371-1379, 2003 [4] Y. Saad...
Proceedings Papers

Paper presented at the 1996 SEG Annual Meeting, November 10–15, 1996
Paper Number: SEG-1996-1771
... in Figure 2. The fourth layer contains a strong gradient, which caus- es a Class 2 response in the reflections from the third interface. This response is weak and positive (as a function of offset) on the left hand side, shows phase reversal (as a function of offset) in the intermediate region and becomes...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0230
..., and time- lapse images to estimate 4D velocity model perturbations. We highlight the differences between the 3D and 4D WEMVA in- version problems, and how we constrain 4D perturbation es- timates to preferentially be updated within the reservoir zone. We demonstrate the benefits of various 4D WEMVA...
Proceedings Papers

Paper presented at the SPE Heavy and Extra Heavy Oil Conference: Latin America, September 24–26, 2014
Paper Number: SPE-171076-MS
... originated from E2 has less asphaltene content, since asphaltenes are deposited on sand particles. Because lower residual oil saturations are obtained with ES-SAGD experiments, the sweep efficiency is higher for the ES-SAGD cases. Also, the effectiveness of steam chamber development is better for ES-SAGD...
Proceedings Papers

Paper presented at the 1995 SEG Annual Meeting, October 8–13, 1995
Paper Number: SEG-1995-1058
... imaging technique for reliable migration velocity analysis: 64-th Ann. Internat. Mtg. SEG, Expanded Abstracts, 1187-1190. Etgen, J., 1990, Residual prcstack migration and interval velocity es- timation: PhD. Thesis, Stanford University. Harlan, W.S., Hanson D.W and Boyd, M., 1991, Common-offset depths...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1447
...) Therefore, in reverse time the electric migrated eld satis es the ordinary vector di usion equation. However, in direct time, t = T the migrated anomalous electric eld satis es the equation adjoint to (4): r r E am = 0 b @E am @t : (5) While the ordinary di usion equation describes the devel- opment...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0224
... to simplify equation (13) by showing that the 225SEG/New Orleans 2006 Annual Meeting terms multiplying the partial derivatives with respect to the angles are zero. Equation (13) simpli es to z i = 1 2 z L ( Ls Ss Ss i + Lr Sr Sr i ) . (14) Linearized perturbations caused by changes in s...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-1034
... moveout and the error in the background velocity, we can es- timate directly the true velocity without iteration. Further- more. stacking after the residual moveout nrovides a martial 1036 4 Velocity analysis by residual moveout 0 2.0 2.5 Model I I 0 I I 0.5 1.0 I I I 1.5 2.0 I 2.5 3.0 3.5 4.0 Midpoint...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13951442
... of the depression model. 5 10 15 20 25 30 35 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Iteration R es id ua l LSRTM WLSRTM Figure 2: Data residual convergence curves. Conclusions The paper proposes the least-squares reverse time migration method with reweighted misfit function, which is fit for the migration...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216768
... with vertical and horizontal vibrators. It included zero offset VSP s with one vertical and two orthogonally polarized horizontal vibrators, far offset vertical vibrator VSP, and two walkaway lines along ESE (Line A) and NNE (Line B) directions. Line A was acquired with vertical and horizontal vibrators whereas...

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