Sample Image 3ème rencontre EGEODE à Villefranche-sur-Mer les 28 et 29 mai 2009 Utilisation de Geocluster sur la grille, 2 exemples.

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Sample Image 3ème rencontre EGEODE à Villefranche-sur-Mer les 28 et 29 mai 2009 Utilisation de Geocluster sur la grille, 2 exemples

Traitement marine Marie OUSSOU et Pierre-Yves GALIBERT  Imagerie de l’Albien dans le Golfe de Guinée Extraction d’attributs sismiques 3D Sismogrammes synthétiques Traitement marine 2D (SI 2ms/ RL 10s, C90)  Séquence de référence: FKMUL + DMO + FXMIG  Amélioration: SRME + Migration temps avant sommation avec pointé RMO VDMUL + LASUB + RAMUR +TIKIM

Attributs sismique 3D Caractérisation des discontinuités dans l’Albien MQC1V Attributs spectraux Mesures de discontinuité Bande passante statistique (Hz) Bloc A Bloc B

SRME + TIKIM FKMUL + DMO +FXMIG Retraitement TIKIM

Statistiques d’utilisation du projet PETROCI Travail entier sur l’UI2 Au départ 16 Gb de données Au final 200 Gb de projet Et sauvegardes sur l’UI2

Organisation du traitement à Sisyphe :  Utilisation sur la grille via UI2 CGGVeritas à Massy.  TEAMVIEW en local sous Windows XP (et MacOSX…)  Jobs batch codés en GSL (ni XJOB, ni JXJOB)  Interactifs: Kereon, Chronovista, Teamview  Quelques difficultés rencontrées : Gestion librairies: *read ne marche pas tel que, utiliser XPS ou ajouter inDATA Remise fichiers résultats parfois erratique (?) Pas de licence par moment, problèmes certificats, réseau, … Suivi des exécutions peu commode (besoin d’une interface job manager ?) UI2 ne passait pas TIKIM sur ligne 2D complète en un seul job OK en // sur les nœuds en plusieurs jobs

Marine geophysics in the Geol Lab, geodynamics team: - Episodic cruises, episodic processing needs. - Basic seismic processing lessons for students using CGG software. - Long periods without activity, as marine geophysics is a component amongst wider topics in geodynamics. - Software used before Geocluster/EGEODE: Geovector 6100! Updates are time consuming for researchers when compared to the episodic use. As a result we cannot follow state of the art processing methods. Problems solved by Geocluster & EGEODE VO in such an environment: - Updates are progressive through the CGGVeritas servers. Stability of the UI platform. - No need to invest in a Cluster for just an episodic use. The laboratory can just share a few nodes on the grid 24/7 and use this shared capacity in a short time on more nodes when needed. - New tools (Teamview, Chronovista...), Pre-stack time migration now possible. Geocluster and EGEODE VO in academic research. User report. Laboratoire de géologie, ENS Paris

APPLICATION 1: SUB-BASALT IMAGING Reprocessing of low frequency seismics: 1) Original processing in ) TIKIM Pre-stack migration (with stack velocity by lack of time) 3) Post-stack Kirchhoff migration (Geovecteur 6100)+ TEAMVIEW Delescluse & Chamot-Rooke, 2008 Reprocessing up to 13s TWTT gave good results on another profile (not shown here) Published in EPSL.

APPLICATION 2: HIGH-RESOLUTION SEISMICS M. Delescluse et al traces seismics processed on Geovecteur 6100 displayed TEAMVIEW Horizon picking with TEAMVIEW, « flattening » (D) with Geocluster Typical processing Flow (post-stack): - Resampling, - band pass filter -Trace and shot editing - -Semblance - Velocity picking - NMO - -Mutes - (anti stretch, - internal,…) - -Stack - -Migration - -Postprocessing - (AGC …)

Statistiques d’utilisation du projet : ENS Installation d’une UI Travail sur l’UI phonolite Et en // sur le site CGGVeritas Premier traitement avec Geovecteur 6100 sur SUN Reprise du traitement et séquences de migration sur la grille

18-juil.-15 Rencontre EGEODE des utilisateurs de Geocluster11 CGGVeritas is the world’s leading international pure-play geophysical company delivering a wide range of technologies, services and equipment to its broad base of customers mainly throughout the global oil and gas industry Focused on Performance. Passion for Innovation. Powered by People. Delivered with Integrity We look forward, as CGGVeritas, to serving you in the future.