【文章內(nèi)容簡介】 al proposition. The drift away from the POSC business objects standards began when OS developers realized that the division of labors between specification and deployment was not tenable. Harter summed up “‘Standard’ is a bit misleading – OS is rather an ‘interoperability solution.’ We would love it if OS became the defacto standard for upstream interoperability.” OS is talking to POSC about finding an appropriate way of presenting and describing these aspirations.Business objects?OS has ‘borrowed heavily’ from POSC Epicentre and Business Objects and still believes that developing and evolving business object standards should be an open process and that other panies and standards bodies should be involved. This might involve cycling new business objects submitted by OS developers through a POSClike approval process.Late bindingOS Release introduces new domain objects and extends current objects to the latest releases of GeoFrame and Open Works. This buffers OS users from changes in the underlying data stores thanks to a ‘late binding’ interface. Late binding uses the same techniques as the dynamic link library (DLL), prevalent in the Windows environment.Future directionsOS 2D grids will be extended to trimesh and point sets. Object richness will be extended in the subsurface space and into drilling and production arenas. OS is looking at Microsoft’s .NET technology to leverage legacy (UNIX) data stores. OS is also working with ESRI to interface with ArcView.POSCPOSC chairman David Archer told PDM that 2002 should see a renewal of interest in POSC’s flagship database Epicentre. This centers around work being done for Statoil (see page 3 of this issue) and for the China National Oil Co., big Epicentre users. XMLPOSC’s XML work is ‘maturing’ – with a move to reusable XML ‘ponents.’ POSC has worked with PPDM on the joint reference values project, resulting in an agreement with PPDM for a crossposting of related URLs on organizations’ websites. POSC is also working to ‘reduce confusion’ with other workgroups and is sharing personnel with Geoshare. Phase I of the Practical Well Log Standards was pleted in 2001. Phase II will continue into 2002 and involves the rationalization of mnemonic data. The Shared Earth Model is now an EUfunded research project, with work being done by the IFP and PDS.Web servicesReflecting on POSC’s evolving technology focus, Archer said, “We have been through generations of technology – ponent, virtual data stores, unbundled and distributed architectures. In fact CORBA is still too tight – things need to be unbundled further – especially the stuff that we do not control such as security and authentication. All this calls for a web services approach, leveraging technologies like XML, SOAP and WSFL. Another tendency is the move towards Open Source – we are making the POSC Universal Units Converter available as Open Source.”2002The planning process is ongoing, but the current focus is on architecture – the framework – as well as content. Well Header ML is likely to be leveraged by CDA and the MMS. Development continues of Well Log ML (which ultimately should replace the LAS) and Production ML will be extended to incorporate joint venture reporting – this has application both within the enterprise (Shell is looking to use this internally) and for regulatory reporting. Other plans include looking into how a well lifecycle approach could keep trac