PDM – We have heard quite a lot about the Slegge project over the last few months but have never quite understood its relationship to POSC Epicentre and Landmark’s PetroBank. Please enlighten us.
Tonstad – The Slegge project, a Corporate Data Store for interpretation results, was originally co-owned by Statoil, Norsk Hydro, NPD and PGS Data Management. Following the acquisition of PGS Data Management by Landmark, we were keen to push the partially completed Slegge project forward. After discussions with all interested parties, we awarded a contract for the further development of Slegge to Schlumberger. Because Landmark still owns the Slegge name, the new appellation for Slegge is the “CDS” or Corporate Data Store.
PDM – How does the CDS differ from the Petrobank MDS?
Tonstad – The CDS represents a move from ‘data container’ to ‘business support’. The aim of the CDS is to preserve the results of our interpretations. Information is extracted from a project and stored in the CDS with extra security, QC and context. Data management requirements, not applications are the drivers. The CDS is decoupled from the Project Data Store.
PDM – The PDS is still OpenWorks?
Tonstad – Yes. Our PetroBank Master Data Store is physically the same as that used by the DISKOS consortium. Data from here is loaded into our OpenWorks PDS for cleanup and interpretation. The CDS has effectively moved from ‘below’ the projects to ‘above’, avoiding the bottleneck of loading to a CDS before the PDS. It also moves data management up the value chain, from infrastructure to business support.
PDM – You don’t mind sharing what is also a public data repository for your MDS?
Tonstad – We have full confidence in the security and entitlements of PetroBank.
PDM – Statoil used to be a strong supporter of POSC and Epicentre. What technology will underlie the CDS?
Tonstad – We are much less prescriptive in terms of technology than in the past. Statoil defines required functionality and Schlumberger implements with such technology as is deemed appropriate. Our focus is now on organizing the workflows around the different data stores. We are importing some constraints from Slegge back into OpenWorks, so that standard nomenclature is available in terms of drop down lists of formation names etc. This has proved an important contribution to interpreter productivity – the use of templates means that a geologist only ‘sees’ one gamma ray log – not twenty! Projects are front-loaded with explanations of roles and process, and an delivery plan is agreed upon, along with minimum audit milestones which are tracked by central data management. It works!
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