The Public Petroleum Data Model Association (PPDM) has just announced the release of model version 3.4 (PPDM v3.4) for review and approval by the membership.

PPDM is the "other" E&P data model. There is no "logical" high-level description of the model here, just a relational implementation which is supplied for use by members. PDM (no relation) covered the PPDM extensively in the November 1996 edition. We concluded that, apart from the intrinsic merits of the different models, an understanding of the way the PPDM model has evolved is useful in mapping out the future - even for POSC. In particular we highlighted the difficulty of upgrading the installed base from one release of the model to the next. The new version 3.4 is now available to download from the PPDM web site at www.ppdm.org.

Calgary AGM

Highlights and implementation insights will be presented at the PPDM Annual General Meeting in Calgary, October 22 & 23, 1997 where the model approval process will be reviewed and discussed. (Traditionally, the model is approved via a membership vote.)

Release highlights include:

New subject modules for Production Reporting and Land Mineral Rights

User friendly, drill-down style documentation

Increased rigor & testing throughout model development process

Architectural consistency and increased integration for Well, Production, Seismic & Land data

Hydrocarbon production tracking and reporting is enhanced and expanded in PPDM v3.4 in readiness to tie into production accounting and other downstream systems. The seismic portion of the model has been improved to better support seismic acquisition and data management. Minor adjustments were made to the structure of the well tables for international well requirements. Land Mineral Rights handles the description of mineral rights both spatially and chronologically. It forms the nucleus for more extensive modeling in the Land subject area.


Extensive drill-down documentation makes the model easy to understand and assimilate for both end user and technical staff. To facilitate take-up, a complete mapping between PPDM v3.3 and PPDM v3.4 will be available shortly. Additional supplementary documentation (such as description of testing and users guide) will be distributed as it is finalized.

Increased emphasis on model validation and testing occurred at every stage of development - business requirements, model design, model implementation with sample test data and sample queries. Workgroup activity through the alpha and beta testing phases helped to provide real world feedback and validation.

Stake in the ground

PPDM v3.4 is described as "a solid stake in the ground, marking a healthy evolution to consistency with the PPDM architectural design principles". Reference tables and constraints have been expanded to enable strengthening data asset value through enabling increased data reliability and early detection of errors and inconsistencies.

Extensive industry volunteer workgroup activity is the heart of PPDM. More than one third of the PPDM membership participated in some way to help develop and evolve PPDM v3.4. This contribution of time and expertise to define business requirements, model the subject area and validate through testing is invaluable. PPDM would like to make special mention of the following members for their exceptional commitment and contribution: Alberta Energy Utility Board (Calgary), Amoco Corporation (Houston), Petro-Canada (Calgary), PI/Dwights (Calgary & Denver). For more information, contact: Mel Huszti, Executive Director, Public Petroleum Data Model Association, (403) 660-7817 or info@ppdm.org. PDM will be reporting on the PPDMA AGM in the November edition.

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