Gary Nichols 2

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Gary Nichols 2

• Jones County, Mississippi

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Gary Nichols 2

• Gary Nichols 2 well evaluated the Wash-Fred
  reservoirs in a portion of the field where the
  sands were trapped by both faults and anticlinal
  closures in the graben area of the field.
• There are five productive sands in the Wash-Fred
  stratigraphic interval.
• Estimated cumulative production from this zone is
  2.5 MMBO, 318 MMCFG and 7.1 MMBW.

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Gary Nichols 2

• The Gary Nichols 2 well was programmed to test
  Wash-Fred sands updip from previous producers in
  the garben
• The Geiger-Cupp Unit 9-13 1 (550 W) produced
  254,000 BO from two W-F sands
• We expect to be about 50 structurally high to
  the Geiger-Cupp well

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Gary Nichols 2

• The Gruy Geiger 1 (300 SW) of the GN 2 well,
  produced 96 MBO from the 9175 Wash-Fred sand.
• We anticipated penetrating the WF structure 25
  high to the Geiger 1 well.
• Venture drilled the BOS 16-4 2 well located
  about 1,500 SW of GN 2 and encountered 8
  separate Wash-Fred pay intervals.

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Gary Nichols 2

• We did not gain the structural advantage that we
  were seeking at the WF targeted sands
• Small faults that were not previously documented
  are present in the garben
• Stratigraphic uncertainties are also prevalent
• Interpretation of the newly reprocessed 3D
  seismic data is ongoing

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9175 WASH-FRED
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8950 WASH-FRED
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8850 WASH-FRED
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COBB RESERVE BASIS
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SLIGO (Bailey Sands)

• The Bailey Sand of the Sligo Formation was
  encountered at 11568 feet. The Sligo sequence
  includes the Bailey Sands and the 12,000 foot oil
  sands. The Sligo Sands are typically fine
  grained, slightly calcareous and argillaceous.
  The Bailey Sand exhibits stratigraphic
  variability as do the majority of the Cretaceous
  sands in this field. It is evident however that
  certain Sligo sands can drain a large area as
  supported by data from production out of the
  12000 feet sand. Cumulative production from the
  Bailey sand in the field has been estimated at 18
  MBO.

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Sligo (Bailey Sand)
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Bailey Sligo Sand
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RODESSA (11600 Ft. Sand)

• The 11600 Rodessa sand interval was encountered
  between 11260 and 11445 feet. The depositional
  environment of the Rodessa Sands in this area
  would be characterized as transgressive marine.
  This Rodessa sequence exhibits strong
  stratigraphic variability. Production was
  initiated at the 11600 horizon in 1961.
  Cumulative production from this interval is
  estimated to be 343 MBO.

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Rodessa 11,600 ft. Lower Sand
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Rodessa 11600 Lower Sand
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Rodessa 11,600 ft. Upper Sand
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Rodessa 11600 Upper Sand
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Rodessa (11,400 Ft. Sand)

• The 11400 Rodessa Sand was encountered at 11096
  feet. This zone has been undergoing waterflood
  operations since June 2004. The depositional
  environment of the Rodessa sands in this area
  would be characterized as transgressive marine.
  The Rodessa Sands exhibit good overall continuity
  through the field, however the sand lenses
  present in the Rodessa show stratigraphic
  variability. The Rodessa sands are fine to
  coarse grained, calcareous, usually porous with
  shale inclusions. Average porosity for this sand
  ranges from 12 to 16 with API gravity around
  26. Cumulative production from the Rodessa
  interval since 1959 is 2.2 MMBO, 570 MMCFG and
  1.1 MMBW.

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Rodessa 11,400 Sand Lobe B
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Rodessa 11400 Lobe B Sand
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Rodessa 11,400 Sand Lobe A
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Rodessa 11400 Lobe A Sand
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