In 2015, we replaced 108% of production, adding 42 MMBOE of reserves, for total proved plus probable reserves of 406 MMBOE.
Reserves are presented on a gross basis at year end, in accordance with National Instrument 51-101, based on evaluations from third party reserves engineers.
Our "best estimate" of unrisked contingent resources is 319 MMBOE. This estimate includes the Marcellus, the Bakken and Three Forks, a portion of our Waterfloods and our Wilrich assets. (Subsequent to December 31, 2015, our Wilrich assets were sold.)
At our production rate for 2016, this resource estimate would provide approximately 12 years of organic reserve replacement.