دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A control valve be fixed on the test appliance of layer,which can seal off the drill string above the appliance then prevent the drill fluid flowing in after the appliance into the well.

n: a device with three extensions (legs) that is suspended over a manway or other vertical access into a space. It supports hoisting gear and cables used to pull a person from a confined space.

tubing retrievable surface controlled subsurface safety valve. May also be referred to as a ScSSV or DHSV.

tubing retrievable subsurface safety valve.

n: the theoretically correct amount. In practice, it is represented by the standard being used for comparison, such as a prover.

n: pressure measured relative to zero pressure. true vertical (TVD) n: the depth of a well measured from the surface straight down to the bottom of the well. The true vertical depth of a well may be quite different from its actual measured depth, because wells are very seldom drilled exactly vertical.

the vertical depth from the surface to the depth of interest. Used for formation comparison and calculation of hydraulic pressures.

n: the volume of fluid flowing through a meter, including adjustments for meter factor, temperature, density, pressure, etc. Compare observed volumes.

n: a long-period wave produced by a submarine earthquake or explosion. If it strikes land, it can be very destructive. Also called seismic sea wave. tube v: to run tubing in a well.