RESERVOIR ISSUE 10 • NOVEMBER 2007 35

The COGEH Volume 3 “Detailed Guidelines for Estimation and Classification of CBM Reserves and Resources” is in draft stage at the time of writing this article. This huge undertaking is likely the first publication dealing specifically with classifying, defining, and quantifying unconventional reserves and resources.

• Reserves Evaluator TrainingThe SPEE/WPC/AAPG and SPE have formed the Joint Committee on Reserves Evaluator Training (JCORET) to investigate training courses for reserve evaluators that focus, in part, on reserves and resources definitions, classification, and applications. Discussions on qualifications and standards for professional reserve evaluators and auditors are ongoing.

CONCLUSIONThe reason for NI 51-101 and COGEH is to provide the shareholder/investor/stakeholder with consistent and reliable reserves information using standardized reporting guidelines in a format that can be widely understood. While the COGEH framework allows for definitions and classifications for current conventional and unconventional reserves and resources, the classification and definition of reserves is an ever-evolving process. COGEH will continue to be modified to adapt to new technology and standardization in a global economy.

REFERENCESKemirmen, Ferruh, 2007. “Reserves Estimation: The Challenge for the Industry,” Society of Petroleum Engineers Paper #103434, In Journal of Petroleum Technology May 2007, P80-89.

Canadian Oil and Gas Evaluation Handbook, First Edition, November 1, 2005, Volume 2, Detailed Guidelines for Estimation and Classif ication of Oil and Gas Resources and Reserves. Section 6: Procedures for Estimation and Classif ication of Reserves, 2005.

Oil and Gas Reserves Committee, Mapping Subcommittee Final Report – December 2005: Comparison of Selected Reserves and Resource Classif ications and Associated Definitions, 2005. Richardson, Texas: Society of Petroleum Engineers. http://www.spe.org/web/ogr/OGR_mapping_Final_Report_15Dec05.pdf.

Look for our next article on “Volumetric Estimation” in the December issue of the Reservoir. This article was contributed by Fekete Associates, Inc. For more information, contact Lisa Dean at Fekete Associates, Inc.

Figure 3. Multi-Well Gas Pool Example Reserves Classif ication (Sourced from Canadian Oil and Gas Evaluation Handbook, Volume 2, Section 6 Procedures for Estimation and Classif ication of Reserves, Figure 6-2B).

Figure 4. Aggregation (summation) Issues (Sourced from: Kemirmen, Ferruh, Society of Petroleum Engineers Paper #103434, Figure 10).

Mark your Calendars Now!

5th Annual AAPG

WINTER EDUCATION CONFERENCE

Houston, TX February 11-15, 2008

(...Continued from page 33)