Ruby: the largest Dutch discovery in over 25 years



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Report summary

On 26 September 2017, Hansa Hydrocarbons announced the sidetracked well on the Ruby discovery had been successfully tested and results were positive. The discovery was made in July 2017 in the basal Rotliegendes sandstones and extends across the Dutch and German offshore sectors. It lies in water depths of 28 meters and is located approximately 20 kilometers from the existing subsea tie-in point at the Noordgastransport (NGT) gas export pipeline. This area is set to undergo further exploration and appraisal in 2018 and 2019. Until which time, the true scale and significance of Ruby and the GEms cluster is uncertain. However, these early estimates suggest Ruby, and its neighbouring prospects, hold the potential to transform Dutch offshore production over the next 10 to 15 years.

What's included

This report contains

  • Document

    Ruby: the largest Dutch discovery in over 25 years

    PDF 798.90 KB

Table of contents

  • Executive summary
  • What you need to know about Ruby and the GEms cluster
  • What is the potential in the wider area?
  • Is the Ruby discovery and the wider GEms cluster commercial?
  • What’s the likely development scenario?
  • Who’s to benefit?
  • What impact could Ruby have on Dutch gas production?
  • Appendix

Tables and charts

This report includes 10 images and tables including:


  • Valuation table
  • Ruby participation- assuming 50:50 share across Dutch and German sectors
  • GEms and Geldsackplate participation table- assuming 50:50 share across Dutch and German sectors


  • Ruby discovery and wider prospectivity
  • Production profiles for our three scenarios
  • NPV and Breakevens (US$) for our three scenarios
  • Reserves and number of wells for our three scenarios
  • Development capex timeline for our three scenarios
  • GEms Mid-Case on a national level
  • GEms Mid-Case on an offshore level

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