Why was the Ekofisk oil field important to Norway?

The Ekofisk oil field was critically important to Norway because it marked the first commercially significant discovery of petroleum on the Norwegian continental shelf.1

Discovered in late 1969 in the North Sea, the field's success occurred at a pivotal moment when foreign oil companies were on the verge of abandoning exploratory drilling after four years of unsuccessful efforts. This discovery effectively launched Norway's offshore oil industry, which eventually became a cornerstone of the national economy. By the mid-1990s, offshore oil and gas accounted for approximately half of Norway's export earnings and one-tenth of government revenues, establishing the country as one of the world's most important oil exporters.1