The PLN19.4bn ($5.7bn) contract, which is to replace the agreement with privately owned petroleum trading company Petraco, is due to expire at the end of 2011.

Under the terms of the new contract, PKN Orlen will maintain the optimal structure of crude oil purchases under long-term contracts for the production plant in Plock.

In addition, the company will also continue to buy a part of total crude oil volume, which enables PKN Orlen to adjust the purchase volumes and crude types to its production requirements.

Furthermore, Souz Petrolium through the Druzhba pipeline will deliver to Plock, 2.4 million tonnes of REBCO crude every year.

The contract’s term runs from 1 January 2012 until 31 December 2014.