【正文】 fecycle data management, from acquisition through processing and interpretation, including transactions and brokerage. Data encryption, error tracking and tape copying are now supported in PPDM Version . Entitlements to data, information and products are described in a new module and cost center summaries and pointers allow users to integrate their business and financial databases effectively.SEGThe Society of Exploration Geophysicists (SEG) Technical Standards Committee (TSC) pretty well lays down the law in terms of how geophysical data gets recorded. SEG TSC chairman Alan Faichney of Concept Systems provided this update. The new SEGY format (Rev. 1) incorporates multiponent data and integrates the European Petroleum Survey Group (EPSG) geodetic reference data. A final draft specification was published in the Leading Edge in August 2001. Subsequent to this publication, one astute reader pointed out that the multiponent specification omitted multiponent source data. This issue is to be addressed by the mittee, and a final revision will be out shortly. Faichney notes that the ‘tone and structure’ of the new revision has been accepted.Format reviewThe Shell Positioning Format (SPS) is aimed at land seismic acquisition and solves the problems inherent in using P1 with multiponent acquisition. SPS is widely used by recording system manufacturers and software panies involved in land acquisition. SEGD is also under review, although again this mainly concerns equipment manufacturers as all data is now transferred to SEGY immediately. The new SEDD will facilitate recording data direct to disk. GXF is a new gravity and magnetic format for gridded data. It has emerged as a defacto standard and will likely be accepted as a remendation. Again, the EPSG positional resource will be embedded. Faicheny, as SEG TCS chair, has been coopted onto the EPSG.WITSThe original Well Information Transfer Standard (WITS) specification evolved out of Amoco’s Critical Drilling Facility, Chevron and Mobil’s Data Centers, Statoil’s Drilling Automation and Real Time and other proprietary initiatives. The original WITS format is binary, efficient but not very portable. John Shields (Baker Hughes Inteq) presented a new initiative, WITSML at the POSC fall member meeting in London. BP and Statoil got together to update the WITS standard for ‘righttime, seamless flow of information’ between operators and service panies. BHI, Halliburton and Schlumberger are participating. WITSML will connect to OpenWorks and GeoFrame through an application programming interface (API). In January 2002 there will be mercial offerings from the major service panies and at least one smaller software house. WITSML is webbased, and follows the W3C XML guidelines. This was a ‘good decision’ in terms of web services it is platform and language independent. The API can be prototyped with Visual Basic. Shields noted that the logs and real time objects are not very standard XML. WITSML ‘looked at’ POSC WellLogML and tried to be ‘close to’ POSC. The real time specification is ‘selfconfiguring and selfdescribing’.Standards on the web Log ASCII Standard (LAS) Society of Exploration Geophysicists (SEG) Geoshare European Petroleum Survey Group Public Petroleum Data Model Association The ‘a(chǎn)lsorans’The Oracle ‘Synergy’ project (PDM Vol. 4 N176。 fax +331 4623 0652 or call +33 1 4623 9596.?