In 1996 light (37°API) oil was discovered in Upper Cretaceous fractured chalk reservoir at some 1400 mss in 43 m water depth, 200 km north of Den Helder. A later well confirmed a Pliocene gas bearing sand at only 700 mss.
The oil field was developed by 3 producing wells and one water injector drilled from gravity based production and storage integrated platform, producing from 2001. Starting 2009 the shallow Pliocene gas was brought on stream using one horizontal well and dedicated surface facilities.
Oil is loaded offshore and exported by shuttle tankers and gas is evacuated via the A6-F3 pipeline on to the NOGAT system.
Since completion of ONE’s acquisition of Noble Energy Europe Ltd in 2013, ONE has increased its equity in the Hanze Oil field from 20% to 35% and its equity in the overlying Pliocene Gas field from 12% to 21%.
Following the divestment of Petro-Canada NL, Dana now operates the field on behalf of the joint venture that further consists of Dyas and ONE. EBN participates in the Pliocene field with 40% equity.