Statoil has started drilling of the first production well at the Gina Krog field in Norway using the Maersk Integrator rig.
The drilling is expected to run until 2019.
The Maersk Integrator rig arrived at the field after completion of the installation of the steel jacket and pre-drilling module and the heavy-lifting vessel Hermod left the field.
Statoil drilling supervisor Tonny Lemqvist said: "We will now drill and firstly install ten 30in conductors.
"We will then drill the top section of six wells. The plan is that two to three wells will be drilled into the reservoir before the topside arrives from South Korea."
Built at Keppel FELS in Singapore, the jack up-rig Maersk Integrator was delivered one month ahead of schedule.
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Gina Krog Drilling and Wells project manager Morten Hyvik said: "The rig arrived in Norway in April and Maersk carried out the final tests and preparations in Åmøyfjorden outside Stavanger, however without needing to dock the rig.
"We were also able to get all third-party equipment on board in time. It has not been easy, but we managed it."
Gina Krog oil and gas field is located in blocks 15/5 and 15/6 of production licenses (PL) 303, PL 048, PL 029C and PL 029B of the North Sea and lies in water depth of 120m about 10km away from the Sleipner West field.
Image: The Maersk Integrator drilling rig on the Gina Krog field in the North Sea. Photo: courtesy of Eva Sleire/Statoil.