Tesco Corp was created on December 1, 1993. The Company is engaged in designing, manufacturing, and service delivery of technology based solutions for the upstream energy industry. Its products and service offerings consists of equipment sales and services to drilling contractors and oil and natural gas operating companies globally. The Company has four business segments: Top Drives, Tubular Services, Casing Drilling, and Research and Engineering. The Top Drive segment sells equipment and provides services to drilling contractors and oil and natural gas operating companies throughout the world. The Company provides top drive rental services on a day-rate basis for land and offshore drilling rigs, as well as provides after-market sales and service to its customers. It manufactures top drives that are used in drilling operations to rotate the drill string while suspended from the derrick above the rig floor. Its top drives offer portability and flexibility, permitting drilling companies to conduct top drive drilling for all or any portion of a well. It offers nine distinct model series of top drive systems, using hydraulic, permanent magnet alternating current ("AC"), and induction AC technology. The Tubular Services segment includes a suite of automated offerings, as well as conventional casing and tubing running services. It also offers installation service of deep water completion equipment using its Multiple Control Line Running System ("MCLRS") proprietary and patented technology. Its conventional service offerings provide equipment and personnel for the installation of tubing and casing, including power tongs, pick-up/lay-down units, torque monitoring services, and connection testing services for new well construction and in work-over and re-entry operations. Research and Engineering segment invest in research and development activities related to its proprietary technologies in tubular services and top drive model development. Its customer base comprises of international and national oil and natural gas service and exploration and production companies. The Casing Drilling process used oilfield casing in place of drill pipe to simultaneously drill and case the well, reducing both drilling time and the chance of unscheduled drilling events. Casing Drilling technology minimized the use of conventional drill pipe and drill collars and enabled the operators to eliminate pipe trips and case the interval while drilling.