TAG has entered a profit-sharing arrangement with fellow publicly-listed Canadian company Apache Corporation to explore and potentially develop onshore East Coast petroleum-bearing formations, similar to lucrative North American formations.
The company had completed onshore seismic mapping and hoped to drill four sites by the end of May: two in Gisborne, one in Central Hawke's Bay and one in the Tararua District.
While TAG is based in Canada its operations are focused on New Zealand.
Last month the debt-free company reported an increase in production revenue for its third quarter to $15.9 million, compared with $4.7 million for the previous year.
Industry commentators say the East Coast is under-explored, with about 40 wells drilled in the past 100 years.
The East Coast has hundreds of naturally-occurring oil and gas seeps.
From the beginning of the last century to the late 1980s a hospital near Gisborne was heated using seeping natural gas.