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Figures and Tables
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Figure 1, Land Map
Map shows the WI acreage holdings of GeoSpectrum from farm-ins and leases. Brown areas on the map are leases being negotiated – rights below 6700’ available only. Blue striped areas vary from 40%-100% WI leases. Red striped areas are 100% WI leases. Total gross holdings are over 1700 acres.
Figure 2a, Strawn Structure Map
Map of the Strawn structure from 3D seismic and well control with a contour interval of 50 ft. The black outline covers areas that GeoSpectrum has leased and farmed-in WI gross acres. Structural closure is indicated and four Strawn wells could be drilled on this closure yielding over 1 MMBO of reserves.
Figure 2b, Strawn Net Porosity Map
Map of the Strawn Net Porosity from downdip well control with a contour interval of 2 ft. Sufficient porous zones exist in the initial drill area to warrant testing of this zone.
Figure 2c, Strawn Seismic Impedance Map
Time slice of the seismic impedance four milliseconds below the top of the Strawn Formation. The red and pink colors indicate porosities in the range of 8 to 12 percent and the green areas suggest porosities below 6 percent. The gray areas indicate areas with high shaliness (low impedance).
Figure 2d, Strawn Seismic Line with Impedance
Seismic Line showing impedance across the structure. The horizon at the top of the Strawn (red line) has been flattened to illustrate the distribution of the porous zone ( red areas) and shalier areas (gray areas). The first well would be located on the west (left) side of the line where the porous limestones are better developed and occur at the top of the structure.
Figure 2e, Strawn Seismic Structure Map
Figure 2f, Strawn Velocity Map
Figure 3a, Canyon Structure Map
Map of the Canyon structure from 3D seismic and well control with a contour interval of 50 ft. The first proposed Canyon PUD location is noted on the map where the seismic line cross, along with the other four Canyon PUD locations shown by black boxes. This well could be 75 ft structurally higher than the highest Canyon producer thus far.
Figure 3b, Canyon Porosity Structure Map
Structure map of the top of the Canyon Porosity zone from 3D seismic with a contour interval of 25 ft. The top of the Canyon porosity zone does not follow the top of the Canyon Formation structurally and can be mapped on the 3D seismic as a separate horizon.
Figure 3c, Canyon Seismic Impedance Map
Map of the seismic impedance two milliseconds below the top of the Canyon Formation. The red and pink colors indicate porosities in the range of 8 to 14 percent, the green areas suggest porosities between 6-8 percent and shalier areas are in the gray zones. The red line is the location of the seismic line used in the Canyon and Strawn seismic displays.
Figure 3d, Canyon Seismic Line with Impedance
Seismic Line showing impedance across the Canyon structure. The light green horizon is the top of the Canyon Formation and the dark green horizon is the top of the Canyon porous zone. The red and pink colors indicate porosities in the range of 8 to 14 percent, the green areas suggest porosities between 6-8 percent and shalier areas are in the gray zone. The first well would be located on the west (left) side of the line where the porous limestones are better developed and occur closer to the top of the structure. The top of the Canyon porous zone is structurally higher in time and depth at the first proposed well location than the downdip offsets to the northeast (right) side.
Figure 3e, Canyon Time Structure Map
Figure 3f, Canyon Porosity Time Structure Map
Figure 3g, Canyon Velocity Map
Figure 4a, Canyon to Strawn Cross Section
Canyon (green) to Strawn (purple) cross section with the porosity zones outlined in color. GeoSpectrum’s first drill location would be updip from the two Canyon producers in the middle of the cross section.
Figure 4b, Canyon-Strawn Seismic Line A
West to East seismic line showing the Canyon and Strawn structure. The light green horizon is the top of the Canyon Formation and the lower red horizon is the top of the Strawn formation. The first well would be located on the west (left) side of the line where the Canyon Formation is structurally higher in time and depth than the down-dip offsets.
Figure 4c, Canyon-Strawn Seismic Line B
South to North seismic line showing the Canyon and Strawn structure. The light green horizon is the top of the Canyon Formation and the lower red horizon is the top of the Strawn formation. The first well would be located on the south (left) side of the line where the Canyon and Strawn formations show structurally closure.
Figure 5a, Wolfcamp Structure Map
Wolfcamp structure map from 3D seismic and well control with a contour interval of 25 ft. Two Wolfcamp proven undeveloped (PUD) locations are denoted by the black boxes. The Wolfcamp like the Wichita-Albany formation is a stratigraphic trap created by a porosity pinchout. (Notice the dry hole on top of the structure).
Figure 5b, Wolfcamp Net Porosity Map
Wolfcamp Net Porosity map from 3D seismic and well control with a contour interval of 10 ft. The Wolfcamp producer well between the two PUDs will produce almost 400 MBO.
Figure 5c, Wolfcamp Seismic Impedance Map
Map of the seismic impedance at the top of the Wolfcamp Formation. The green colors indicate porosities in the range of 6 to 10 percent, the blue areas suggest porosities below 6 percent and shalier areas are in the gray zone. The lone producing Wolfcamp well is in a green area as are the two PUD locations.
Figure 6a, Wichita-Albany Structure Map
Wichita-Albany structure map from 3D seismic and well control with a contour interval of 25 ft. The proposed five Wichita-Albany PUD locations are denoted by the black boxes. These wells will be drilled updip from currently producing Wichita-Albany wells and downdip from the porosity pinchout (see impedance and Net Porosity maps).
Figure 6b, Wichita-Albany Net Porosity Map
Wichita-Albany Net Porosity map from 3D seismic and well control with a contour interval of 5 ft.
Figure 6c, Wichita-Albany Seismic Impedance Map
Map of the seismic impedance at the top of the Wichita-Albany Formation. The green colors indicate porosities in the range of 6 to 10 percent, the blue areas suggest porosities below 6 percent and shalier areas are in the gray zone. The producing Wichita-Albany wells are all in green areas as are the five PUD locations.
Figure 7, Wichita-Albany to Wolfcamp Cross Section
Wichita-Albany (blue) to Wolfcamp (red) cross section with the porosity zones outlined in color. All the Wolfcamp and Wichita-Albany PUDs are updip from current production.
Figure 8a, Clearfork Structure Map
Clearfork structure map from well control with a contour interval of 50 ft. GeoSpectrum’s acreage is at the same subsea structural level as the waterflooded Clearfork producers to the southeast.
Figure 8b, Clearfork Net Porosity Map
Clearfork Net Porosity map from well control with a contour interval of 10 ft. GeoSpectrum’s acreage has as much or more net porosity zones than the Clearfork wells to the southeast.
Figure 8c, Clearfork EUR Isopach Map
Clearfork EUR isopach map from decline analysis of well production with a contour interval of 50 MBO. This map demonstrates the increased production due to injected wells in close proximity to the Clearfork producers. The lack of Clearfork oil producing wells and supporting injector wells on the GeoSpectrum leases causes the EUR’s calculated to be low.
Figure 8d, Lower Clearfork Net Porosity Map
Figure 9, Clearfork Cross Section
Clearfork cross section with four internal Clearfork zones correlated. The yellow color indicates porous zones. Notice the number of porous zones that have not been perfed as indicated by the purple lines.
Figure 10, Wheeler Cross Section
Clearfork cross section with four internal Clearfork zones correlated. The yellow color indicates porous zones in the Upper Clearfork and the green color indicates Lower Clearfork porosity. Again, notice the number of porous zones that have not been perfed.
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