New Zealand Oil & Gas says it should have been developing new oil fields by now as reserves at its producing assets dwindle.
However, the company says it has a strong enough balance sheet to give it more time to find oil to replace declining output from its Kupe field and Tui field, which was a long way down the "decline curve".
In its results for the year to June 30, it reported a fall in normalised after-tax profits from $33.1 million to $16.7 million, but after-tax net profit rose 30 per cent to $25.9 million.
Chief executive Andrew Knight said cash flows from existing fields gave the company sufficient capacity to invest in new ones.
NZOG had $158 million of cash at June 30 and over the past year had paid off $46.6 million of debt. Revenue from the 15 per cent-owned Kupe fell to $68.8 million from $74.3 million a year earlier, due mainly to a planned maintenance outage, while revenue from 12.5 per cent-owned Tui fell to $30.4 million from $42 million.