1981
Drillship Explorer 3 against a wall of sea ice.
The company
Incorporated in 1950, Dome Petroleum Limited had become one of the largest oil and gas companies in Canada, with exploration primarily in Canada, a fleet of western Arctic drillships, and a major shipyard in Canada.
p. 3
That year
Dome operated four drillships in the Beaufort Sea. Explorer 3 drilled and partly tested the Koakoak O-22 well in 1981, and the drillship program had completed 14 wells, resulting in four oil discoveries, two step-out oil wells, two gas discoveries and one dry hole.
Dome Petroleum Limited Annual Report 1981, p. 10