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The AAPG/Datapages Combined Publications Database
Williston Basin Symposium
Abstract
The Impact of Salt Dissolution on Hydrocarbon Distribution within the Mannville Group in West-central Saskatchewan
Abstract
The Lower Cretaceous Mannville Group is the most prolific heavy oil reservoir in Saskatchewan. Multiple stacked reservoirs within the Mannville Group in west-central Saskatchewan are found at shallow depths ranging from 360 to 630 metres below surface. This study focuses on how salt dissolution within the Prairie Evaporite Formation affects the distribution of hydrocarbons within the various members of the Mannville Group.
The Prairie Evaporite strongly controls hydrocarbon distribution within the Mannville Group in that thick tidally influenced fluvial channels are typically associated with structural lows created by salt dissolution. Thinner, regional deltaic reservoirs are associated with structural trapping on the flanks of salt dissolution on structural highs. Regional reservoirs typically produce using Cold Heavy Oil Production (CHOPS), whereas thick fluvial channel reservoirs produce oil using thermal processes such as Steam Assisted Gravity Drainage (SAGD).
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