دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a tubing safety valve.

A flow controlled shut-in device to control flow in the event of loss of surface well control. Must be reset periodically. Replaced by ScSSVs.

n: the environment below the surface of the earth;groundwater, deep water, underground formations, etc. subsurface geology n: the study of rocks that lie beneath the surface of the earth. subsurface safety valve n: see tubing safety valve.

n: a device installed in the tubing string of a producing well to shut in the flow of production if the flow exceeds a preset rate. Tubing safety valves are widely used in offshore wells to prevent pollution if the wellhead fails for any reason. Also called subsurface safety valve.