GTD desco is a specialist manufacturer of geothermal drilling rigs and support equipment, with its main factory and in-house R&D center in South Korea. Unlike manufacturers focused only on machines, the company’s team includes experienced geothermal drillers who work alongside customers in the field, using that practical knowledge to shape equipment development and commissioning support. Its purpose-built facilities produce more than 80% of rig components in-house and can deliver popular models in roughly four months.
Geoprobe SystemsFounded by two engineers in 1987, Geoprobe Systems manufactures drilling rigs, tooling, and Direct Image sensing equipment in Salina, Kansas. The company introduced the first direct push machines and tooling for environmental work and now supports soil probing, drilling, sampling, and well construction around the world. Its engineers regularly field-test designs alongside drillers, pairing hands-on development with factory service and support.OXFORD, PA
Terra Sonic InternationalFrom its Marietta, Ohio base, Terra Sonic International builds sonic drill rigs and the proprietary drill heads and tooling that make them work. The company’s sonic-only focus extends beyond equipment to field support, a head-exchange program designed to reduce downtime, and hands-on instruction through Terra Sonic University. Terra Sonic says its team brings more than 400 combined years of sonic-drilling experience and supports customers through offices and warehouses in the United States and Europe.MARIETTA, OH
Ormat Technologies, IncOrmat Technologies, Inc. develops, manufactures, and operates geothermal and recovered-energy power plants and supplies power-generating equipment to customers in more than 30 countries. The company reports six decades of experience and a vertically integrated business that also includes energy storage and solar photovoltaic activity. Its manufacturing facilities cover more than 23,000 square meters.PHILADELPHIA, PA
N&N Drilling Supply MfrN&N Drilling Supply Mfr. began in 1967, when Angelo Nieto ran the company from a two-person garage operation; today, the Nieto-led business employs 35 people and serves drilling customers around the world. Its Jessup operation manufactures in-hole drilling equipment, with core barrels among its established specialties, while its U.S. locations support geotechnical, water-well, environmental and exploration work.JESSUP, PA