Lessons Learned from a 10 year Industry-wide DHI Consortium
Rocky Roden, Mike Forrest, and Roger Holeywell
From 2001 through 2011, 42 oil companies have contributed 217 prospects in an industry Consortium where a work process was developed that includes an evaluation of seismic and rock physics data quality, a check list of 26 to 37 seismic amplitude characteristics, and a quantification of a Revised Pg including the impact potential Direct Hydrocarbon Indicators (DHI's) contribute to the risk. The Revised Pg is the probability of geologic success including both the geologic chance factors and DHI assessment. This Consortium prospect database contains prospects from around the world, range in age from Triassic to Pleistocene, and 86% are exploratory wells. From this database and discussions with members from the oil companies over the past decade, a series of lessons have evolved. 1. Understanding of geologic setting 2. Data quality is critical (seismic and well data) 3. DHI Threshold Effect 4. Most important DHI Characteristics 5. Primary reasons for failure 6. Seal issues and amplitude anomalies 7. No silver bullets 8. Systematic consistent process The lessons learned in this Consortium are incorporated in a work process that has proven to reduce the uncertainties in determining probability of geologic success and the range of resource estimates.
AAPG Search and Discovery Article #90167©2013 GCAGS and GCSSEPM 63rd Annual Convention, New Orleans, Louisiana, October 6-8, 2013