Head of research at Woodward Partners John Kidd said given the large financial commitments and long lead times, election certainty was crucial for the sector.
"The sector lives on confidence and certainty and capital does flow where certainty is higher so I guess the clarity of the outcome would have been quite welcome across the sector."
While there was relief at the election result, Woodward Partners' quarterly outlook said about $330 million had been spent on five offshore wells that had come up commercially dry.
"We're in a real peak point around the spending going into the ground. The exploration programme has been broadly very disappointing and it is a sector where confidence is important."
There had been incremental discoveries at appraisal wells (those near productive oil fields) but these were relatively small and they were so far confined to Taranaki. Kidd said marketing campaigns are being affected because of the lack of success from exploration wells to date.
Bridges said finding resources in another basin would be a "game changer".
"Even good government can't change the rocks. The question now becomes one of finding the needle in the haystack," he said.
Greenpeace climate campaigner Steve Abel said New Zealand had to decide whether it was "backing the right horse" in the fossil fuels sector rather than moving to a sustainable, low carbon alternatives.