In general, the Mancos Formation is an underpressured sequence composed of intimately interbedded siltstones and shales in a relatively faulted geologic environment.

Apparently sporadic production trends from the Mancos Formation in northwestern Colorado led to an intensive evaluation program. This encompassed laboratory determination of the mechanical and fluid transport properties of the formation as well as evaluation of treatment and production records. Production trends were compared with known geological conditions as well as stimulation procedures. Mechanisms for the variability in production and the local effectiveness of treatments are outlined. General procedural approaches for optimum recovery are discussed. These procedures include resource determination guidelines and general stimulation guidelines.

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