Tulsa, Okla.—PennWell Corp., publisher of Oil & Gas Journal
, announced it has acquired the assets of HCI Publications, a Kansas City, Mo.-based b-to-b media company serving the hydroelectric industry. HCI operates the HydroVision and Waterpower Conferences and Exhibitions and publishes Hydro Review, HRW
and HydroNews.net. Financial terms of the sale were not disclosed. HCI was represented in the deal by advisory firm Whitestone Communications.