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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
Abstract
By
Originally presented at the 1998 Hedberg (AAPG) Research Conference at Galveston, TX
Book/CD-ROM Title:
Edited by
structural
maps
appears to be valid for determination of the area extent of potential
hydrocarbon accumulations. Five percent, 10%, 50%, 90% and 95% cumulative probability
distributions have been calculated for a wide variety of traps and lateral seal
combinations. Fault seal traps in
sections
with hydrostatic or low overpressure gradients
(<14.8 kPa/m, <12.5 PPG), composing nearly half of all GOM traps in this study, show
a relatively narrow distribution. However, distributions for trap types along salt flanks
and for traps in
sections
with high-pressure gradients are significantly broader. The
database can be used to analyze the effects on probability distributions of varied
phenomena such as salt, stratigraphic traps, supernormal pressure, fault timing, geologic
age and single versus dual phase hydrocarbon reservoirs. These results suggest that other
natural phenomena such as pay thickness and recovery factors can have log normal
distributions as well and can be analyzed in a probabilistic manner also.