Seismic surveying

G - Physics – 01 – V

Patent

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Details

G01V 1/22 (2006.01) G01V 1/00 (2006.01) G01V 1/38 (2006.01)

Patent

CA 2284742

In order to enable the clients to remotely monitor the quality of a marine seismic survey as it is being performed by a seismic survey vessel, a data base of the quality of an attribute, typically coverage (fold), of the seismic data being acquired by the survey is built up on the vessel as the survey progresses. The same data is simulatneously transmitted by satellite link to a shore base, where it is used to concurrently build up a duplicate data base identical to the data base on the vessel. A processor at the shore base uses a Java application program to provide processed data for producing a display of the quality of the data in each part of the survey area, and responds to requests from remotely located clients to compress and encrypt the processed data and send it over the Internet to the clients for reconstitution and display.

Selon cette invention, pour permettre aux clients de surveiller à distance la qualité d'une prospection sismique marine effectuée par un navire de prospection sismique, on crée sur le navire, à mesure que la prospection progresse, une base de données relative à la qualité d'un attribut, généralement de la couverture (du pli), des données sismiques en cours d'acquisition. Simultanément, on transmet ces données par liaison satellite à une base côtière où on les utilise pour créer en parallèle une base de données dupliquée, identique à celle existant sur le navire. A la base côtière, un processeur utilise un programme d'application Java pour fournir des données traitées et réaliser l'affichage de la qualité des données dans chaque partie de la zone de prospection; il répond aux requêtes qui proviennent de clients se trouvant à distance pour comprimer et chiffrer les données traitées et pour les envoyer aux clients via l'Internet, pour reconstitution et affichage.

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