Flinn Prospect

San Patricio County

The prospect is located in the South Taft Field area, 2.8 miles southwest of Taft, Texas. In February, 1953, the Phillips Petroleum Company Flinn #1-A well discovered commercial quantities of hydrocarbons in a Frio sand. The prospective geological structure responsible for this field's production was penetrated by 12 producing wells in eight Frio and one Miocene sand. A total of 487,117 thousand cubic feet (Mcf) of gas and 808,155 barrels of oil (BO) were produced out of those sands.

These hydrocarbons were trapped by up-thrown closure against a fault, stratigraphic pinch out on the side of the structural high and four-way closures. The buried geological feature responsible for the Flinn production was created by a shale diapir, which underlies the Frio sands and created a structural high that provided the hydrocarbon trap for the Frio sands that are under the lease. A shale section over 2200' thick can be seen in the Phillips-Flinn #1 well. This shale diapir created two substantial anticline highs, which have been delineated by the wells drilled in the area. These faults, along with the stratigraphic nature of some of these sands control the individual traps found on the Flinn lease. The 200 acre Flinn lease is bounded to the southwest by a large down-to-the-coast fault. This 500' to 800' fault is seen in the Fischer-Picha #1 well. Northeast of this fault there are numerous smaller faults that can be seen in the wells on the lease.

Three wells are to be drilled in three separate fault blocks. The three wells will test all potentially productive sands described above and vary in depth between 7300' and 7400'. Potential production ranges from a low-side of 411,520 BO to as much as 887,375 BO. Based on earlier production, natural gas deposits are also expected. The first well will be drilled in early April, 2010.