Since the first subsea choke was manufactured in 1975 for the Mobil West Delta project in the Gulf of Mexico, subsea chokes have been used in numerous installations around the globe. These chokes are designed to protect valves from high pressure drops during startup and shutdown of subsea wells, balance pressures from different wells to a common manifold, reduce flowline pressures, protect against reservoir collapse during startup, and control flow rates to minimize sand and water production throughout the life of the field. These subsea chokes typically use hydraulic power as a means of actuation.
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