maximising reservoir information from conventional cores – case study 1
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Maximising reservoir information from conventional cores – case study 1
Andrew ThurlowPrincipal Reservoir Geologist
IchronUnited Kingdom
6th June 2014
Case Study 1 – Jurassic, UK North Sea
Northwich
66 wells described, >15,000’ core
Case Study 1 – Jurassic, UK North Sea
Case Study 1 – Jurassic, UK North Sea
Case Study 1 – Jurassic, UK North Sea
Well shown in previous slide
Case Study 1 – Jurassic, UK North Sea
Case Study 1 – Jurassic, UK North Sea
Exaggerated Vertical Scale No Horizontal Scale
>3300ft
Un-Swept Rannoch Fm.
Water Swept Broom Fm.
Water Swept Etive Fm.
c.40
ft
Case Study 1 – Jurassic, UK North Sea
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.
Ichron gratefully acknowledge the support of exploration companies licencing our regional UK, Norwegian & Brazilian
multi-client reservoir quality studiesplus
Centrica 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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