Oilfield Terms Starting with "U"

An umbilical is a critical bundled assembly of hydraulic hoses, electrical power and signal cables, fiber-optic lines, and sometimes chemical injection tubes that connects a…

Underbalance perforating is a well intervention technique used during the completion or re-completion of oil and gas wells. It involves firing shaped charges to create…

Underbalanced drilling (UBD) is a specialized drilling technique in which the hydrostatic pressure of the drilling fluid column is intentionally maintained below the pore pressure…

Unitization is a contractual and regulatory mechanism used in the oil and gas industry to combine multiple leasehold interests or mineral rights over a single…