The first GEM contract was signed during the summer of 2002. In the spring of 2011, Aibel was awarded a new frame agreement, Greater Ekofisk Modifications Contract (GEMC), which was valid for five years. The contracts were some of the largest maintenance and modifications contracts on the Norwegian continental shelf.
On the basis of the GEM, Aibel carried out around 200 modification projects of varying size at the installations at Ekofisk every year. The work involved engineering, procurement, fabrication, installation and completion. The contract engaged an average of around 400 employees.
A unique feature of the GEM contract was that many of the offshore jobs were managed from an operations room located in Aibel's main offices in Stavanger.