🔍 Key Concepts

• Purpose of nitrogen-pressurized hydraulic storage in BOP (blowout preventer) systems • Difference between an actuator and a fluid storage device in hydraulics • Function of an accumulator in hydraulic systems on drilling units

💭 Think About

• Which component in a hydraulic system is specifically designed to store energy in the form of pressurized fluid? • Which term in the options refers to a space or opening in the wellbore rather than a storage device? • Which items are actually parts of the blowout preventer stack itself, and which are part of the hydraulic power/control system?

✅ Before You Answer

• Identify which option is defined as a hydraulic energy storage device using gas pressure (often nitrogen). • Eliminate any choices that describe valves, openings, or the space between casing and drill pipe, not storage tanks. • Confirm that the correct choice is used to provide immediate high-pressure fluid to rapidly close the BOPs.