Warren Resources Inc.  announced that it has exercised its preferential rights to acquire additional oil, natural gas and midstream assets from subsidiaries of Anadarko Petroleum Corp in the Atlantic Rim Project area, Washakie Basin, Wyoming. Under the preferential rights exercise, Warren has agreed to acquire:

- Up to 100% of Anadarko’s working interest in the Spyglass Hill Unit area within the Atlantic Rim Project, consisting of approximately 47,015 net leasehold acres and an approximate 41.5% working interest therein, for a purchase price of approximately $14.4 million for all of Anadarko’s interest;

- Up to 100% of Anadarko’s working interest in the Catalina Unit area within the Atlantic Rim Project, consisting of approximately 4,232 net leasehold acres and an approximate 19.5% working interest therein, for a purchase price of approximately $2.6 million for all of Anadarko’s interest; and

- All (100%) of Anadarko’s 50% interest in the gas gathering, compression and pipeline midstream assets (“Midstream Assets”) within the Atlantic Rim Project for a purchase price of $4 million.