The Middle and Upper Devonian Misener sandstone reservoir in Grant and Garfield Counties, Oklahoma, is a prolific but elusive hydrocarbon target. Isolated pods of dolomitic sandstone are preserved in strike-valley erosional lows cut into the underlying Sylvan Shale. Source of the Misener sand appears to have been Simpson sandstone, which subcrops to the north and east. This sand was originally transported south-southwest onto the Sylvan subcrop by a fluvial system. The path of this drainage system is indicated by reentrants of the Viola Limestone subcrop downdip into the Sylvan Shale subcrop. During the Late Devonian marine transgression, which culminated in the deposition of the Woodford Shale, these fluvial deposhs were reworked into marine sands and concentrated along several strandlines during stillstands of the Woodford sea. Three distinct Misener trends are evident based on present well control: one adjacent to the Viola subcrop, one at a medial position in the Sylvan Shale subcrop, and one adjacent to the Hunton Limestone subcrop. Reservoir distribution along these strandlines is extremely erratic.

Reservoirs average 250 ac in extent and attain a maximum thickness of 60 ft. Primary production has ranged from 100 to 160 bbl of oil/ac-ft. Early institution of reservoir pressure maintenance can allow recovery of nearly 60% of the original oil in place.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.