SIMCO? Drilling Equipment, Inc. began designing and building all-hydraulic, long stroke, tophead drive drilling rigs in 1971 at our manufacturing facility located in Osceola, Iowa. Today, SIMCO drilling rigs and drilling rig equipment are working on every continent in the world. Backed by over 38 years of experience in the drilling industry, our drill rigs are used for water well drilling, geotechnical and environmental drilling, mineral exploration, geothermal drilling, construction and utility work, and a wide range of other diverse applications.