Nabors Industries Ltd. engages in the provision of platform work over and drilling rigs. The firm is a provider of offshore platform drilling rigs in the United States and multiple international markets. The firm operates through five segments: U.S. Drilling, Canada Drilling, International Drilling, Drilling Solutions and Rig Technologies. Its services include tubular running services, wellbore placement solutions, directional drilling, measurement-while-drilling (MWD), logging-while-drilling (LWD) systems and services, equipment manufacturing, rig instrumentation and optimization software. Its United States fleet consists of approximately 173 alternating current (AC) rigs and 11 silicon-controlled rectifier (SCR) land rigs. Its international fleet consists of approximately 116 land-based drilling rigs located in approximately 14 countries. Through its Drilling Solutions, it offers specialized drilling technologies, such as patented steering systems and rig instrumentation software systems.