What we know:

  • Tight-gas-sand reservoirs behave differently from conventional gas reservoir in many critical ways:

  • Very low permeability
    (< 1 md)

  • Little or no produced water

  • Abnormal pressures

  • Lack of a distinct top seal, and an indistinct upward transition from commercial gas to non-commercial gas.

 

But we don’t know:

  • How gas migrates into and fills tight-gas-sand reservoirs.

  • The extent to which reservoir compartments communicate at a production and a geologic time-scale.

  • The origin and significance of overpressure.

In this project, we are applying gas geochemistry to develop new models for gas migration into and communication within large tight-gas-sand fields in the Rocky Mountains.