Oil discovery in appraisal well south of the South Arne oilfield Denmark, Rigs-4/4A

Hess Denmark ApS, operator for the companies in licence 7/89 and 2/06, has completed the appraisal well Rigs-4/4A (/30-5) in the Danish part of the North Sea. Oil was discovered in chalk layers.

DONG E&P A/S was managing the drilling operations of the well, which was drilled as a near vertical well and reached total depth of metres below mean sea level in clay stones of Early Cretaceous age.

The well discovered oil bearing chalks of Late Cretaceous age. A section of the well was cored, and a sidetrack Rigs-4A was drilled approx. 1 kilometer towards southeast in order to appraise the extent of the oil-bearing layers. No production testing was performed. The commerciality of the oil-bearing chalk layers in Rigs-4 and the sidetrack Rigs-4A will now be evaluated closely.

The Rigs-4/4A appraisal well was drilled in corporation between license 7/89 awarded in in the 3rd licensing round (South Arne Field) and license 2/06 awarded in the 6th licensing round in 2006.

Rigs-4 was spudded 3 July with the jack-up rig ENSCO 70 at the location 56°1'8.59" N; 4°17'48.06" E (UTM zone 31; 6,209,095.75 N; 580,832.9 E), where the water depth is 55 metres. The well will be permanently plugged and abandoned.

Companies participating in licence 7/89:
 

Company

Share (%)

Hess Denmark ApS

57.47875

DONG E&P A/S

34.37500

Altinex Oil Denmark A/S

6.56250

Danoil Exploration A/S

1.58375