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Maximising reservoir information from conventional cores – case study 1

Maximising reservoir information from conventional cores – case study 1. Andrew Thurlow Principal Reservoir Geologist Ichron United Kingdom 6 th June 2014. Case Study 1 – Jurassic, UK North Sea. Northwich. 66 wells described, >15,000’ core. Case Study 1 – Jurassic, UK North Sea.

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Maximising reservoir information from conventional cores – case study 1

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  1. Maximising reservoir information from conventional cores – case study 1 Andrew Thurlow Principal Reservoir Geologist Ichron United Kingdom 6th June 2014

  2. Case Study 1 – Jurassic, UK North Sea Northwich 66 wellsdescribed, >15,000’ core

  3. Case Study 1 – Jurassic, UK North Sea

  4. Case Study 1 – Jurassic, UK North Sea

  5. Case Study 1 – Jurassic, UK North Sea Well shown in previous slide

  6. Case Study 1 – Jurassic, UK North Sea

  7. Case Study 1 – Jurassic, UK North Sea >3300ft c.40ft Un-Swept Rannoch Fm. Water Swept Etive Fm. Exaggerated Vertical Scale No Horizontal Scale Water Swept Broom Fm.

  8. Case Study 1 – Jurassic, UK North Sea

  9. Case Study 1 – Jurassic, UK North Sea Conclusions Sedimentological re-description of a historic core database underpinned the building of a field-scale depositional model for a relatively thin reservoir unit with significant volumes of unswept oil in a late-life giant field. Depositional model de-risked uncertainty over distribution of moderate-high reservoir quality zones. This allowed a dedicated production well to be planned and drilled. Results of the well were highly cost-effective.

  10. Ichron gratefully acknowledge the support of exploration companies licencing our regional UK, Norwegian & Brazilian multi-client reservoir quality studiesplusCentrica Energy & CNR for permission to show data from the North Coast Marine Area and Ninian Field respectively.Thank you for listening

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