KCA Deutag said it has sold its jack-up drilling unit for an undisclosed sum to an intergrated energy and services company.
The Ben Rinnes was built in 1973 in Clydebank and acquired by the firm in 2005.
It is the last asset in the mobile offshore drilling fleet for the company.
It had been under contract offshore Angola until February this year before being stacked in Gabon.
Norrie McKay, KCA Deutag chief executive, said: “Whilst the sale of the Ben Rinnes is an important milestone for KCA Deutag as it is our last asset in our mobile offshore drilling fleet, we continue to maintain the competence and experience required to support offshore drilling unit operations.
“This expertise is currently supporting the construction and start-up of two Category J jack-up rigs which will commence operations on the Norwegian Continental Shelf next year.”
Earlier this year the company began an ongoing recruitment process for operational staff in Norway.
The company said it is looking for 150 staff members on each of its two Category J jack-up rigs in the region