Halliburton Company provides services and products to the upstream oil and natural gas industry throughout the lifecycle of the reservoir, from locating hydrocarbons and managing geological data, to drilling and formation evaluation, well construction and completion, and optimizing production throughout the life of the field. It operates through two segments: the Completion and Production segment, and the Drilling and Evaluation segment. The Completion and Production segment delivers cementing, stimulation, intervention, pressure control, specialty chemicals, artificial lift and completion services. The Drilling and Evaluation segment provides field and reservoir modeling, drilling, evaluation and wellbore placement solutions that enable customers to model, measure, drill and optimize their well construction activities. It serves national and independent oil and natural gas companies. As of December 31, 2016, it had conducted business in approximately 70 countries around the world.