Gydevang 25, Allerød, 3450, DenmarkWelltec develops and deploys completion, conveyance, mechanical intervention, fishing and well-integrity technology for oil, gas and geothermal operators. Danish operations include intervention manufacturing in Allerød, completion manufacturing in Esbjerg and an Esbjerg CO₂ test facility. Services combine application engineering, specialized downhole tools and field execution, with selected partner technologies integrated into the offering.