Presentation on theme: "Storage & Distribution Stewart A. Levin. Guidelines Long term viability – SEG-EAGE model data still in use after 15 years Follow SEAM business model –"— Presentation transcript:
Storage & Distribution Stewart A. Levin
Guidelines Long term viability – SEG-EAGE model data still in use after 15 years Follow SEAM business model – Put out RFPs for tender Single point of contact for data requests – Validation, verification, contract compliance
Compression Preliminary costing highlighted need for about 10:1 data reduction to fit in budget – Either compression or compute many fewer shots Lossless compression, e.g. PKZIP, GZIP, achieve less than 2:1 on test records Landmark offer of free perpetual license for their corporate standard compression – Dave Hale patent 6,1690,919 – JPEG family with C 1 continuity
Compression File Size (MB)
Compression Software Library provided under license agreeing to use it only for SEAM data Free, unrestricted C source code driver software provided for decompression of SEAM data back to SEG-Y Available for Linux, Solaris, Windows, IRIX, and Apple. Other platforms on request.
Storage Vendor PetroBank (Landmark) – No, I was not involved in the selection.
SEG-Y Rev. 1 & P1/90 Datasets generated with SEG-Y Revision 1 compatible reel and trace headers P1/90 created by compression code to position coordinate origin at 28°N–88°W and describe the 4 corners of coverage for each shot record – UTM Zone 16 N, NAD83 datum, WGS84 projection – Standalone P1/90 trace header scanner available
Classic Datasets Traces are selected off at QC vendor, shipped to Landmark in ~terabyte subsets Once all shot records have been QCed, classic datasets will be sorted, compressed, and shipped to PetroBank for storage and distribution