Annual Report 2000 - WIT

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282 Stefan Lüth Robert Patzig Refraction seismic data interpretation, seismic processing and integration of geophysical and geodynamic data. Application of CRS stacking to seismic profiles from the northern Chilean coast. Ph.D.Students: Elmar Rothert Tobias Müller Master students: Mi-Kyung Yoon Jan Rindschwentner Oliver Krüger Christof Sick 3D inversion and modeling of permeability tensor . Green Functions in statistically isotropic random media. Poroelasticity. Application of Kirchhoff Prestack Depth Migration to the ANCORP’96 data set In-situ estimation of the permeability tensor using hydraulically induced seismicity seismic modeling random media Computer facilities In Karlsruhe, the research project uses computer facilities that consist of mainly Hewlett-Packard and Silicon Graphics workstations, and Linux PCs. These are networked with a local computer server, a multi-processor SGI PowerChallenge. For large-scale computational tasks a 256-node IBM SP-2 is available on Campus. Additionally, we have access via ATM networks to the nearby German National Supercomputer Center with primarily a 512-node Cray T3e and NEC SX-4. The Hamburg group has direct access to the German Computer Center for Climate Research (Deutsches Klimarechenzentrum, DKRZ). A Cray 916 and a Cray T3D (128 processors) are used for computationally intensive tasks. The Geophysical Department of the Free University of Berlin (Fachrichtung Geophysik, Freie Universität Berlin) has excellent computer facilities based on SUN- and DEC-ALPHA workstations and Linux-PCs. It has access to the parallel supercomputer CRAY-T3M (256 processors) of ZIB, Berlin.
Wave Inversion Technology, <strong>Report</strong> No. 4, pages 283-287 List of <strong>WIT</strong> Sponsors BEB Erdgas und Erd-ol GmbH Postfach 51 03 60 D-30633 Hannover Contact: Dr. Heinz Jürgen Brink Tel. 49-511-641-2275 Fax: 49-511-641-1020 email: Heinz-Juergen.Brink@beb.de Chevron Petroleum Technology Co. 6001 Bollinger Canyon Rd San Ramon, CA 94583 USA Contact: Dr. Glyn M. Jones Tel. 1-925 842-6499 Fax: 1-925 842-2076 email: gmjo@chevron.com ENI S.p.A. AGIP Division Geological and Geophysical Research & Development Departement Via Emilia 1 20097 San Donato Milanese MI Italy Contact: Mr. Serafino Gemelli Tel. 39-02-520 63441 Fax: 39-02-520 63741 email: serafino.gemelli@agip.it 283
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Wave Inversion Technology WIT Annua
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Wave Inversion Technology WIT Wave
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Copyright c 2000 by Karlsruhe Unive
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i TABLE OF CONTENTS Reviews: WIT Re
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Wave Inversion Technology, Report N
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3 theory. It relates properties of
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Imaging 5
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8 two hypothetical eigenwave experi
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7 ¢¥£§¦©¨ ; < calculate sear
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7 7 searches ¡ HNJOL for ¢IHNJML
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14 Trace no. 1000 1500 2000 0.5 1.0
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16 CDP number 3100 3000 2900 2800 2
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18 REFERENCES Höcht, G., de Bazela
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20 INVERSION BY MEANS OF CRS ATTRIB
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22 For synthetic data, it is easy t
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— J J J J J J G J - J J G
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· · v 0 B 0 £ & Ä Ã & v
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31 Dürbaum, H., 1954, Zur Bestimmu
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Ã Ø Ì 0 0 Ì 4 0 Ã 0 G ' 4
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0 0 ˜ ” Z ˜ ” Z 4 4
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39 strategy by combining global and
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41 elled data is presented in Figur
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43 0.2 Distance [m] 1000 1500 2000
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45 In Figure 10 we have the optimiz
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47 Gelchinsky, B., 1989, Homeomorph
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§ ¢ ø ø for a paraxial ray, ref
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Œ § … Z ‹ Z § õ ø \ ø §
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54 As stated in Hubral and Krey, 19
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§ ó § 56 sequence. We made tes
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58 precision of the modeled input d
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60 Cohen, J., Hagin, F., and Bleist
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£ 65 The details of the theory inv
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67 of the figure. On both sides, a
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69 (a) (b) Depth (m) 600 800 Depth
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71 Langenberg, K., 1986, Applied in
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È Û Ñ¿ = ¨ Í Ñ>* = ¿ + ð
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g ý g [ ^ â g [ g g g g g â h [
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g § » ¹ [ƒŽ g 79 We now subst
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ê 81 ing was realized by an implem
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ˆ 83 -0.05 -0.1 Amplitude -0.15 -0
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85 on a second-order approximation.
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88 kinematic (related to traveltime
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¨ º Ý È · § À · Á · Á ¼
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° ´ ´ ã ° ¼ ´ ´ þ Ò Ò ¥
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94 1 taper value ksi1 0 ksi2 Figure
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96 0 1 2 3 4 5 Depth [km] CMP [km]
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98 CONCLUSION As a generalization o
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100 weight during the stacking proc
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102 are not illuminated for every o
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104 obtained from Zoeppritz' equati
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106 PreSDM of Porous layer 0.358 re
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108 REFERENCES Gassmann, F., 1951,
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110 et al., 1992), Hanitzsch (1997)
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112 consecutive wavefronts). Howeve
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114 Numerical example We test the W
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116 Versteeg, R., and Grau, G., 199
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118 indicator. To extract elastic p
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€ b b 120 S where is the position
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É É É É 122 The À constant (da
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124 0 Distance [ m ] 1000 2000 3000
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126 Kosloff, D., Sherwood, J., Kore
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128
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130 penetration distances and a pot
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and » ˆ Ö Ö is the scalar hydra
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Å éÙó ó ».-.‹œì/-jì¨‹
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136 TRIGGERING FRONTS IN HETEROGENE
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Ö ˆ Ö “P£'ˆ é ˆ ó,Lˆ¨
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Ö Ö Ê » Ø Ö » Ö Ê Ê Ê Ö
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142 300 250 200 a) eikonal equation
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144 Shapiro, S. A., and Müller, T.
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» i » m ×]Ú ‘Œƒšj'Ÿlk hM
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148 RESULTS Soultz-sous-Forêts Inv
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…„ƒ 150 for the smaller ellips
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152 Figure 5: The cloud of events f
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…„ƒ Î Î ÎÄÈ‹•¨ Î-È
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156 straightforward. The new approa
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158
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160 1982). There is also the so-cal
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{ ³ u ´ ´ ´ ´ -y ›-^œ ´ ´
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Ï u u ¬ 164 To summarize, we deri
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Ý ì á ä é å¤æDçzè ä é
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ø M ã = ã Ù ø ä Ú ã Ù ø
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ã Q c ã ä 170 a=10m; std.dev.=8%
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172 Frankel, A., and Clayton, R. W.
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174 It is well-known that inhomogen
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ã ä ä ŸSŸ S ¡S¡ ©©¨¨ æ
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Kneib, 1995 285-6000 superposition
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180 parameter: Hurst coefficient pa
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182 REFERENCES Bourbié, T., Coussy
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184 1999) in multiple fractured med
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‹œž Ÿ¢¡¤£¦¥ƒ§©¨ ‘
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j jÆÅÇ[È”u j jÎÅÇ[È”uw
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190 Davis, P. M., and Knopoff, L.,
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192 properties from the measured se
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194 discussion of these problems ca
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196 Altogether, close to 260 shotpo
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198 Time (ms) 0 2 4 6 8 10 12 14 16
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200 of groundwater. ACKNOWLEDGEMENT
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202
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204 the wavefront curvature matrix
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û ò é from ã äñ to ã î§ñ
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é 208 Table 1: Median relative err
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210 Table 2: Median relative errors
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212 CONCLUSIONS We have presented a
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214 PUBLICATIONS Previous results c
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æVU ìÿå T ü ýWYXZX[ 9\]9^\ Þ
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218 weight functions from traveltim
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220 REFERENCES Bleistein, N., 1986,
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Š Ê ¦ Í ½ Í ’ » Ö ½ Ê
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!¥”“Z• Ç ¤ É¨§ — ‘
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226
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228 In this paper, we present a mor
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L • MM+,ON N N Ž ú R N N N ú
Page 244 and 245: 232 Figure 3: The evolution of a WF
Page 246 and 247: 234 Let us analyze next the computa
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Page 252 and 253: ’ Ç r 240 traveltimes, a computa
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Page 260 and 261: 248 Ettrich, N., 1998, FD eikonal s
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Page 264 and 265: ø ü ø ø ý Þ do ø ý Ü
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Page 268 and 269: ‹ 256 transport equation. Neverth
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Page 274 and 275: 262
Page 276 and 277: … " ¯ ü ý +- 4=° ü ü +
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Page 280 and 281: 268 NUMERICAL RESULTS We constructe
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Page 284 and 285: £ -š' - 272 Ô- —- Figure 6: C
Page 286 and 287: 274 REFERENCES Aldridge, D. F. (199
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Page 290 and 291: 278 3. 4. True-amplitude imaging, m
Page 292 and 293: 280 Research Group Hamburg (Gajewsk
Page 296 and 297: 284 Landmark Graphics Corp. 7409 S.
Page 298 and 299: 286 TotalFinaElf Exploration UK plc
Page 300 and 301: 288 as research assistant at Geoeco
Page 302 and 303: 290 Ingo Koglin is a diploma studen
Page 304 and 305: 292 Matthias Riede received his M.S
Page 306 and 307: 294 Svetlana Soukina received her d
Page 308: 296 Yonghai Zhang received the Mast
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