Chesapeake Energy Corp., Oklahoma City, (NYSE: CHK) has acquired certain oil assets in the Niobrara trend in Goshen County, Wyoming, from Denver-based Samson Oil & Gas Ltd. (NYSE Amex; Australia: SSN) for approximately $74 million in a three-part transaction.

In June, Chesapeake acquired 100% of Samson's working interest in the subject leases, with Samson retaining a royalty interest. Samson subsequently closed an additional portion of the sale in September for delivery of drilling permits for three state leases.

Samson has retained 17,000 net acres immediately to the north of the ...