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Exploration Report for UKCS License P1105 (Block 21/6b)

Detailed report with seismic correlations, stratigraphy, oil shows, drilling locations, and channel mapping for exploration in the UKCS license area.

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Exploration Report for UKCS License P1105 (Block 21/6b)

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  1. Century Exploration (UK) Limited. Charbella Energy Limited Elixir Petroleum Limited Granby Enterprises Limited Relinquishment report for UKCS 21st Round Licence P1105 (Block 21/6b) Figures 15th September 2006

  2. Figure 1. 21/6b Palaeocene Stratigraphy Approx location of 21/6b-6 Sequences 21/6a-3 T50 T45 T40 T35 T34 T33 Glamis / Andrew Tuff T32 T31 T20 Modified after Ahmadi et al (2003) Sequence scheme after BP with modifications = significant gamma log peaks Top Tor formation

  3. Figure 2. northwest – southeast well correlation for the Palaeocene Oil in Balder T50

  4. Figure 3. Regional seismic correlation with wells 21/6b-6 21/6-1 21/6a-3 21/6b-4 21/6b-5 Oil shows Channel 21/6-1 21/6-2 20/10-1 21/6a-3 21/6b-6 21/6b-4 Horizons 20/10-1 21/6-2 21/6a-3 21/6b-5 Miocene T50 Balder Channel T35 T34 Andrew Tuff Tor Base Chalk KCF Smith Bank

  5. Figure 4. T34 channel seismic character TWT on top T34 N S T 50 T34 Channel T 34 Approx location of 21/6b-6 N S compaction faulting N S Main graben fault Maureen

  6. Figure 5. T34 channel timeslice mapping 1624 mS Timeslices showing the development of the channel (white dashed arrow) from Block 20/5 (encountered by wells 20/5c-4 and ?20/5d-7), through Block 20/10 into Block 21/6 (encountered by 21/6b-6 but not 21/6-2, 21/6a-3 & 21/6b-4) 1480 mS 21/6a-3 21/6-2 1432 mS 20/5c-4 21/6b-6 21/6b-4 20/5d-7 21/6b block boundary

  7. Figure 6. Depth map on top T34 sequence (Lower Balmoral Sst) Depth map on top T34 contour interval 10m Main T34 (Lower Balmoral) channel Isochore between T34 and Andrew Tuff Channel ‘tail’

  8. Figure 7. Marquis prospect drilling location T34 Depth (ML case) 21/6b-6 drilling location avoiding main graben fault TD at top Andrew Tuff W E N S Seismic amplitude anomalies Probable multiple effects T34 target T34 target Velocity pull-down? Gas cloud or processing effect?

  9. Figure 8. 21/6b-6 CPI for the Lower Palaeocene section Upper Balmoral Sst Mbr Lower Balmoral Sst Mbr Marquis Channel Target Base T34 channel Base Bamoral Sst Member Top T32 Top Andrew/Glamis Tuff

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