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The AAPG/Datapages Combined Publications Database
CSPG Bulletin
Abstract
Comparison of Discovery Process Methods for Estimating Undiscovered Resources
ABSTRACT
The merits of several discovery process methods for petroleum resource assessment are evaluated using discoveries from the Niagaran (Silurian) pinnacle reef play of northern Michigan as a benchmark data set for comparing methods. The tested methods include: the USGS log-geometric method, the GSC PETRIMES methods including the lognormal (LDSCV); nonparametric (NDSCV)-empirical; nonparametric-lognormal; nonparametric-Pareto; and lognormal or nonparametric-Poisson (BDSCV) methods; Arps and Roberts; Bickel, Nair and Wang's nonparametric finite population; Kaufman's anchored; and Chen and Sinding-Larsen's geo-anchored methods.
The estimated number of fields varied by a factor of 3.7 (973 to 3,568), but the estimated volume of resources varied by a factor of 1.6 (1,145 to 1,855 MM BOE). The estimates are similar for the large field-size classes greater than 2 - 4 MM BOE. The main differences among the estimates are in the small fields less than 2 - 4 MM BOE.
Future developments in resource assessment methodology should attempt to identify a specific probability distribution from the empirical distribution derived by nonparametric methods. Emphasis should also be placed on the development of numerical solutions in nonparametric finite population analysis.
RESUME
Les merites de plusieurs methodes de processus de decouvertes pour les evaluations de ressources en petrole sont evaluees en utilisant les decouvertes faites dans les enjeux de recifs pinacles du Niagarien (Silurien) du nord du Michigan comme un ensemble de donnees reperes pour comparer les methodes.
Les methodes evaluees comprennent: la methode log-geometrique de l'USGS, la methode PETRIMES de la CGC qui inclut les methodes log-normal (LDSCV), non-parametrique (NDSCV)-empirique, non-parametrique-log-normal, non-parametrique-log-normal, non-parametrique-Pareto, log-normal ou non-parametrique-Poisson (BDSCV); les methodes de population finie non-parametrique de Arps et Roberts et de Bickel, Nair et Wang; et les methodes ancree de Kaufman et geo-ancree de Sinding-Larsen.
Le nombre estime de champs varie d'un facteur de 3,7 (973 a 3 568), mais les volumes estimes de ressources varient d'un facteur de 1,6 (1 145 a 1 855 millions de barils de petrole estime). Les estimations sont similaires pour les classes de champs de grandes dimensions, de plus de 2-4 millions de barils de petrole estime. Les differences principales parmi les estimations sont dans les petits champs de moins de 2-4 millions de barils de petrole estime.
Les developpements futurs de la methodologie d'evaluation de ressource devra s'attacher a identifier une distribution specifique de probabilite a partir des distributions empiriques derivees des methodes non-parametriques. L'emphase devrait etre placee sur le developpement de solutions numeriques pour l'analyse non-parametrique de populations finies.
Traduit par Lynn Gagnon
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