The Flex4 is available in three configurations to address specific markets.
Flex4M/4C: A highly trailerized rig designed for single wells in the 6,000 to 12,000 foot depth range. The rig is equipped with a 300,000# mast, 400HP top drive and Gardner Denver HS-2250 mud pumps. Range 3 drill pipe is used without setback.
Flex4S: This model was first deployed into the high well density unconventional gas market for efficient pad operations. Inherent in the design is a bi-directional skidding system capable of drilling multiple wells on a single pad. It comes standard with a 500,000# mast, Gardner Denver PZ-11 mud pumps and a 400HP top drive (TDS-11HP in some versions). Ideal well depth is 8,000 to 22,000 feet.