Denver Oil and Gas Exploration and Development 1125 17th St # 1900 Halliburton offers a broad array of oilfield technologies and services to upstream oil and gas customers worldwide Denver CO Oil and Gas Exploration and Development Landmark Graphics Corp www.halliburton.com Oilfield Technologies Oilfield Technology Oilfield services oilfield products and services oil and gas exploration and development drilling tools logging and perforating drill bits downhole completion tools reservoir oilfield Oilfield Technologies Oilfield Technology Oilfield services oilfield products and services oil and gas exploration and development drilling tools logging and perforating drill bits downhole completion tools reservoir oilfield Business Reviews Landmark Graphics Corp Testimonials