Dong Energy has installed the jacket for the Hejre platform in the Danish sector of the North Sea, 292km north west of Esbjerg, using Heerema Marine Contractor's Hermod heavy lift vessel (pictured).
The 8400-tonne jacket arrived at its location, in 68m water depth, in the Danish sector of the North Sea on 22 May, and the last steel pile for fastening the legs of the support structure were rammed into the subsoil on Friday 30 May. Production well drilling is now due to start. First oil and gas is scheduled for 2016.
Hejre is estaimated to contain about 170MM boe. The reservoir is 5000-600m deep, at 1010 bar and 160°C.
”Our people on the project and our suppliers have done a fantastic job in delivering and installing the jacket in the North Sea. Now, we enter a new project phase. where we will be drilling the production wells, installing the oil and gas pipelines and modify the Gorm E platform from which the oil will be transported to shore," says Flemming Horn Nielsen, head of DONG Energy's Danish oil and gas business.
The launch of the jacket from a barge into the North Sea took less than one minute. The ballast tanks of the barge were filled with water, making it tilt slightly, so that the giant steel construction slid into the sea. The fitted floating tanks and compartments in the construction kept it floating, before it was erected to a vertical position in a controlled process and lowered onto the seabed.
The Hejre licence is owned by DONG Energy (60%), operator of the licence, and Bayerngas (40%).
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