This DTH drilling rig is specifically designed for photovoltaic foundation pile holes. It is equipped with an 86kW engine and a high-efficiency desert air filter, supporting a maximum drilling diameter of 500mm.
[pdf] While maintaining a superior health, safety and environmental record, the Group currently has a fleet of thirty four onshore drilling rigs, thirteen jack-up offshore drilling rigs, a jack-up barge, and a mobile offshore production unit ("MOPU"), which includes a floating storage and offloading unit.
[pdf] Patterson-UTI will add 16 super-spec drilling rigs from Pioneer to its current U.S. fleet of 150 super-spec rigs. Patterson, second largest drilling contractor in U.S., said the deal enhances its focus on reducing emissions with additional rigs capable of using natural gas as primary fuel source.
[pdf] 
