 Chesapeake Energy Corp. CHK, 1.14 said Tuesday it has signed an agreement to acquire Chief ED Holdings LP from Tug Hill Inc. for 2 billion in cash and about 9.44 million common shares. Chief and Tug Hill hold high quality producing assets and an inventory of premium drilling locations in the prolific Marcellus Shale in Northeast Pennsylvania, Oklahoma City-based Chesapeake said in a statement. 