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Hydrodynamics Class Exercises

STUDENTS START WITH RAW DATA AND PROGRESS THROUGH ALL STEPS TO COMPLETED MAPS

1. Defining a Stratigraphic Trap (800 MMBBL Oilfield), North Alberta.

  • A reservoir pressure/continuity map is made to define major sand pinchout edge. Raw pressure/fluid data prior to discovery is used.

  • It will be shown how the oilfield could have been initially missed due to a false pressure from an old DST.

  • Students will predict extent of field from the discovery DST pressure to decide land acquisition strategy.

2. Identifying Flushed Vs. Prospective Areas in Saskatchewan.

  • Students evaluate regional potentiometric surface maps to define flow direction in Winnipegosis, Midale and other zones

  • Broad non-prospective areas of updip flow where small fields occur

  • More prospective areas of localized downdip flow which is the main trapping mechanism for the 600 ft. oil column in Steelman and Midale/Weyburn fields

4. Finding Giant But Subtle Gas Reserves (B.C.)

  • Students given a few small isolated (1 Bcf) gas pools with intersperesed "water" tests

  • Gas pressure continuity exercise shows mis-correlation by industry

  • Pools really form one huge accumulation and "water" was filtrate

  • Now over 70 wells drilled with 1 Tcf reserves!

  • Spectacular example of hydrodynamics used as gas finding tool