Comstock Resources Inc., Frisco, Texas, (NYSE: CRK) plans to acquire South Texas properties from SWEPI LP, an affiliate of Shell Exploration & Production, for $170.0 million. Assets include 11,500 acres (7,600 net) in the Dinn Ranch, Fandango, Rosita and Rosita East fields in Duval and Zapata counties, Texas. The properties include 70 producing wells (43.3 net). Production is approximately 21.9 million cubic feet of natural gas per day. Net proved reserves are approximately 57.8 billion cubic feet. Comstock estimates an additional 90 billion cubic feet potential from future exploitation.