【正文】 es. The new log codes incorporate up to date tool mnemonics and will provide for new codes as new tools are developed.Content rulesLAS content rules let government regulators and users specify minimum acceptable content. The LAS ‘Certify’ program will be enhanced to check an LAS file to ensure pliance with both the LAS standard and specific content rules. Work on these two aspects of LAS will continue in 2002. A Windows version of Certify is now available for download from the website. This version supports all versions of LAS, and has expanded checking and reporting. Future versions of this application will also support content rule pliance.Open SpiritOpen Spirit CTO Clay Harter gave PDM an update on Open Spirit’s activity. But first we popped the question: Is Open Spirit (OS) really a standard? Harter points out that OS publishes business object definitions on its website. While these “could be implemented” by a third party, Harter admitted that without the OS license and runtimes from Landmark and Schlumberger, this is unlikely to be a practical 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 servicesRefle