Tidally Influenced Sedimentation in the Upper Cretaceous
Almond Formation, Patrick Draw Field, Sweetwater Co,
The Almond Formation has been a prolific hydrocarbon producer
Anadarko Petroleum Corporation has recently begun tertiary recovery of the oil in place through CO2 flooding of the Almond in Monell Unit. Improving efficiency of CO2 flooding in this significant oil reservoir is critical in light of the alternative costs of drilling all new wells and building new facilities. Over 10 recent cores have been taken in Monell, and new stratigraphic interpretations can be made by integrating these cores with earlier cores. The Almond deposits are now interpreted as flood tidal deltas, tidal inlets, tidal channels, tidal creeks, spit platforms, bay muds and oyster patch reefs. Understanding the complex stratal architecture of these lithofacies is critical to designing and operating a more successful CO2 flood for Monell Unit.