Controls on reservoir continuity and distribution within the Mississippian Pekisko Formation at Twining field, south-central Alberta, Canada.
appendix_F_disc_02-CYCLE_AND_ATTRIBUTE_MAPS-TOTAL_PEKISKO-CYCLE 1 TO TOP CYCLE 9 ISOPACH.pdf (854.0Kb)
appendix_F_disc_02-CYCLE_AND_ATTRIBUTE_MAPS-DIGITAL_TOPS_AND_DATA-DRAINAGE RECOMPLETION DATA.txt (16.74Kb)
appendix_F_disc_02-CYCLE_AND_ATTRIBUTE_MAPS-DIGITAL_TOPS_AND_DATA-CUMULATIVE PHI METER.txt (8.748Kb)
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Josson, Erika M.
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Twining field, located in south-central Alberta, Canada, and discovered in 1951, produces from the Mississippian Rundle Group. Estimates of original in-place oil are 913 million barrels, with 46 million barrels identified by the Alberta Energy Utilities Board as recoverable (5% recovery factor). Cumulative production to date from the Rundle Group at Twining is 31 million barrels (67% of recoverable reserves). The Pekisko Formation of the Rundle Group is a carbonate reservoir that is unconformably overlain by the Lower Cretaceous Mannville Group. Reservoir quality (porosity and permeability) is best developed in the shoal facies association contained within 9 shallowing-upward parasequence sets that are relatively continuous across the study area where they are not karst-modified or truncated beneath the basal Cretaceous unconformity.