Aug. 19, 2019 | Wintershall Dea GMBH started drilling four production wells in Dvalin natural gas field in the Norwegian Sea. The wells—each targeting a depth of 4,500 m—are being drilled using the Transocean Arctic harsh-environment midwater semisubmersible drilling rig. Work is expected to last for a year. The start of gas production is slated for 2020, says field operator Wintershall Dea. Reserves in the field are estimated at 113.3 million boe. Photo from Transocean.