NZOG announces increased oil reserves for Tui

Oil Reserves for the Tui Area Oil Project have been increased to 41.7 million barrels, 30% above the previous estimate and nearly 50% above pre-development predictions.

The new figure for proved and probable (2P) reserves compares with estimated reserves of 27.9 million barrels on which the Tui Area Oil Project in off-shore Taranaki was first sanctioned, and an interim re-estimate of 32 million barrels following completion of the development drilling campaign.

New Zealand Oil and Gas Ltd (NZOG) has a 12.5% share of the Tui Area Oil Project. NZOG’s share of the reserves has increased from 3.5 million barrels (pre-development) to 5.2 million barrels.

Tui oil is a light sweet crude that is generally sold, with freight and quality differentials, against the Tapis benchmark crude, which has recently surpassed US$100 a barrel. The reserves upgrade for NZOG of 1.7 million barrels, at current oil prices and exchange rates, has a gross value of more than NZ$200 million.

The increase in reserves follows a reassessment of the field by the operator (AWE) based on interpretation of re-processed 3D seismic, a more detailed assessment of the Kapuni reservoir and the integration of the production data from the fields since production began on 30 July 2007. The increased reserves assume production from the existing four wells, plus the completion of an additional development well in the Tui oil field, Tui-4H. Preliminary planning for drilling of this well has begun, with drilling targeted for 2009.