1065 - OGP Surveying and Positioning Committee

Annex D______________________________________________________________________________________________________________Page D2POSCThe most recent Petrotechnical Open Software Corporation (POSC) literature pertaining toGeographic and Projected Co-ordinate System Transformations was compiled by EPSGmembers for POSC. It can be found in the form of EPSG Guideline No.7 on the EPSGwebsite as well as in the Epicentre documentation. Epicentre co-ordinate system standardreferences are taken from the EPSG compilation.http://www.posc.comPPDMThe Public Petroleum Data Model Association is an independent, not-for-profit associationrepresenting over 100 oil and gas companies, vendors, and regulatory agenciesworldwide. PPDM delivers a vendor-independent standard petroleum data model thatserves as the industry foundation for managing information as an essential asset in theglobal business of oil and gas exploration.http://www.ppdm.orgSEGThe Society of Exploration Geophysicists seismic data exchange format SEG-Y Revision 1will include provision in the tape header for co-ordinate system identification following thePOSC/EPSG guidelines.The new Ancillary Data Standard metaformat, developed collectively between the IAGC,SEG and UKOOA. The ADS metaformat itself is co-ordinate neutral. However, the TraceAttribute sub-format uses a "P1/90" style geodetic definition for pre-defined co-ordinateattributes. It can be found on the SEG website.http://www.seg.orgUKOOAThe UKOOA Surveying and Positioning Committee have been very active in producingformat standards for data provision and exchange. To date they have included detailswithin the Header records describing the spheroid (ellipsoid), geodetic datum andprojection parameters associated both with acquisition and processed data. These haverecently been supplemented with additional header information that includes reference tothe EPSG database of geodetic parameters. The intention of this supplementaryinformation is to facilitate improved machine readability and/or to enable integrity checkingof co-ordinate system definitions in the UKOOA P1, P2, P5 and P6 formats. Reference tothese additional header records can be found in Annex E and free downloads of the Pformats themselves on the UKOOA web site.http://www.ukooa.co.uk____________________________________________________________________________________________UKOOA Guidance Notes on use of co-ordinate systems in data management on the UKCS - December 1999