This document discusses drilling equipment used on oil and gas rigs. It describes major components including the rig itself, which is the machine used to drill wellbores. Key components of rigs include mud tanks, mud pumps, the derrick or mast, drawworks, rotary table or topdrive, drillstring, and power generation equipment. Other important drilling equipment discussed include the travelling block, crown block, hook, and drilling line which are used for hoisting and rotating drill pipe and other tools. Safety equipment like blowout preventers are also mentioned. Different types of rigs such as land, jackup, drillship, semisubmersible, and submersible rigs are shown.