HOUSTON--(BUSINESS WIRE)--E&P (Upstream) business activity continues on the final day of the NAPE Expo, being held at the George R. Brown Convention Center. The Expo, designed to bring oil and gas industry leaders together for networking and deal making, had 17,000 delegates & exhibitors making the rounds during the four-day conference. Each year, NAPE Expo’s two Houston venues generate $18 million in economic impact for the city. NAPE Expo recently announced a new regional Expo to the 2013 schedule as it brings NAPE East to Pittsburgh for its inaugural conference April 10-12, 2013. For more information, visit www.napeexpo.com.