NEW, Exco Operating Company LP has retained Tristone Capital to sell certain East Texas interests. The package includes 59% average working interest (45% net revenue interest; 98% operated) in approximately 50,000 gross acres (28,000 net) of which 90% are held by production in the Gladewater area and Overton Field in Upshur, Gregg and Smith counties, Texas. The assets include 496 producing wells. Net production is 24 million cubic feet equivalent per day (93% gas) from the Cotton Valley trend. Net monthly cash flow is $6.9 million. Lee Keeling & Associates Inc. has been retained to independently evaluate the reserves. The data room opens in late October. The bid due date is in November. Contact Miles Redfield, 713-651-4229.