Introduction
5
The information provided by this type of assessment can be applied to
economic analyses.
An Outline of the Evaluation Procedure
In this book, the procedure for resource evaluation is as follows:
Estimate pool-size distribution using either (a) the discovery
1.
process models for mature plays, which use superpopulation or fi nite population concepts; or (b) the multiplication
of probability distributions of geological random variables
according to a pool-size equation for conceptual or immature
plays. In contrast to the defi nition adopted by Schuenemeyer
and Drew (1983) and Davis and Chang (1989) (they defi ne
a fi eld-size distribution in terms of the number of fi elds or
pools), in this book, a pool-size distribution is defi ned as a
pool-size probability distribution in terms of in-place or
recoverable volume. Furthermore, a pool is defi ned as a single
reservoir entity, and a fi eld is a group of pools located within
a geographic area.
Identify geological factors of a play and estimate their mar2.
ginal probabilities.
Derive number-of-pools distribution from the operation of
3.
exploration risk and the number-of-prospects distribution.
Estimate individual pool sizes from the number-of-pools dis4.
tribution and the pool-size distribution of a play.
Obtain the play resource and/or potential distribution.
5.
The evaluation procedure outlined here was developed primarily
for assessing petroleum resources. However, evaluation of mercury
deposits (Lee and Singer, 1994) demonstrates that if ore deposits are
classifi ed according to their origins as “plays,” as in petroleum geology,
PETRIMES can then be applied.
Scope
Chapter 2 explains the meaning and applications of geological and
statistical models in petroleum resource evaluation. In chapters 3
and 4, the superpopulation and fi nite population models, and data
5
The information provided by this type of assessment can be applied to
economic analyses.
An Outline of the Evaluation Procedure
In this book, the procedure for resource evaluation is as follows:
Estimate pool-size distribution using either (a) the discovery
1.
process models for mature plays, which use superpopulation or fi nite population concepts; or (b) the multiplication
of probability distributions of geological random variables
according to a pool-size equation for conceptual or immature
plays. In contrast to the defi nition adopted by Schuenemeyer
and Drew (1983) and Davis and Chang (1989) (they defi ne
a fi eld-size distribution in terms of the number of fi elds or
pools), in this book, a pool-size distribution is defi ned as a
pool-size probability distribution in terms of in-place or
recoverable volume. Furthermore, a pool is defi ned as a single
reservoir entity, and a fi eld is a group of pools located within
a geographic area.
Identify geological factors of a play and estimate their mar2.
ginal probabilities.
Derive number-of-pools distribution from the operation of
3.
exploration risk and the number-of-prospects distribution.
Estimate individual pool sizes from the number-of-pools dis4.
tribution and the pool-size distribution of a play.
Obtain the play resource and/or potential distribution.
5.
The evaluation procedure outlined here was developed primarily
for assessing petroleum resources. However, evaluation of mercury
deposits (Lee and Singer, 1994) demonstrates that if ore deposits are
classifi ed according to their origins as “plays,” as in petroleum geology,
PETRIMES can then be applied.
Scope
Chapter 2 explains the meaning and applications of geological and
statistical models in petroleum resource evaluation. In chapters 3
and 4, the superpopulation and fi nite population models, and data