The way has been cleared for further drilling in the Maui natural gas field off the South Taranaki bight.
The Environmental Protection Agency (EPA) has given the all-clear for Shell Todd to use a hack-up rig near the existing Maui A and B platforms between 35-50km off the coast.
The consents were lodged in October last year. The company asked for EPA permission to place and later remove the drilling rig as part of its 2018-19 exploration programme.
A second consent covers potential discharge of harmful substances from drains on the rig deck during drilling but comes with conditions.
The decision was made by an EPA-appointed Decision-making Committee (DMC) chaired by Kerry Prendergast with Gerda Kuschel and Miria Pomare as members. All three members agreed to grant consent based on information from submissions and evidence provided in a process that included a public hearing in New Plymouth.