Bayesian Discovery Process Modeling of the Lower and Middle Jurassic Play of the Halten Terrace,Offshore Norway,as Compared with the Previous Modeling |
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| Authors: | Email author" target="_blank">Richard?Sinding-LarsenEmail author Jingzhen?Xu |
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| Institution: | (1) Department of Geology and Mineral Resources Engineering, Norwegian University of Science and Technology, Trondheim, N-7491, Norway |
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| Abstract: | A Bayesian version of the discovery process model was applied to the pre-rift Lower and Middle Jurassic play of the Halten
Terrace, Mid-Norway. The Bayesian approach estimates the lognormal parameters, the discoverability parameter, and the distribution
of sizes of the undiscovered fields as well as the play potential, conditioned on a discovery sequence averaging for all possible
prior choices weighted by their likelihood. This approach avoids the problem of having to make arbitrary choices for the parameters.
The estimates of parameters and play potential based upon the present methodology compares well with previous estimates, if
the play is divided into two sub-plays representing the overpressured and normally pressured zones. These sub-plays have been
estimated independently and aggregated in order to get the total undiscovered resource potential. This study estimates that
the expected remaining play potential is 100 × 106Sm3 o.e., about 9% of the total resources in the play. There is however a 90% chance that the remaining potential ranges from
13 to 282× 106 Sm3 o.e. and a 5% possibility of exceeding this value. |
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| Keywords: | Bayesian estimation discovery process modeling evaluation of petroleum resources Halten Terrace |
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