The agreement provides for a price based on dated North Sea Brent crude oil, minus a transportation and quality discount.
Deliveries will take place through the nearby Zhem rail terminal.
The pricing formula will allow the company to take in about $36 per barrel, which represents about a 70% price increase over the previous sales agreements for the field.
The contract is effective 1 July and may be extended through the end of the year.
"This