Halliburton Co. engages in the provision of services and products to the energy industry related to the exploration, development, and production of oil and natural gas. It operates through the following segments: Completion & Production, and Drilling & Evaluation business segments. 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, and optimize their well construction activities. The company was founded by Erle P. Halliburton in 1919 and is headquartered in Houston, TX.

Atwood Oceanics, Inc. is a global offshore drilling contractor, which is engaged in the drilling and completion of exploratory and developmental oil and gas wells. It owns mobile offshore drilling units and is constructing drill-ships, and jack-ups. The company was founded in 1968 and is headquartered in Houston, TX.