دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

The down hole equipment be runned and pulled by wire-line.

n: a device that secures the end of a bend in the wire rope to the body of the wire rope. A typical safety clamp consists of a U-shaped bolt that is fastened to the wire rope with a saddle-shaped base. Two nuts on the base thread onto the U-bolt to secure the clamp to the rope. Depending on the diameter of the wire rope, which determines the amount of rope that is looped back on itself to secure the rope to the tongs or other device, clamps can vary in number from one to three.

n: a relatively short length of pipe that has openings in its sides and a specially shaped wire wrapped around the pipe. It is used in wire-wrapped screen completions, usually in conjunction with a gravel pack. The screen and gravel pack block out sand and allow fluids to flow into the well through the openings in the screen. Also called a screen liner.

n: a slender, rodlike or threadlike piece of metal usually small in diameter, that is used for lowering special tools (such as logging sondes, perforating guns, and so forth) into the well. Compare wire rope.

n: Related to any aspect of logging that employs an electrical cable to lower tools into the borehole and to transmit data. Wireline logging is distinct from measurements-while-drilling (MWD) and mud logging.

a term encompassing slickline, electric line and braided line operations.

n: a device containing a valve that closes around the wireline to shut in the well if high pressure threatens a blowout. Also called a wireline valve.

n: see core barrel.

n: We dont need to trip out and can coring sequentially with this core barrel.

n: a coring method in which a core barrel assembly is lowered through the drill pipe on wireline without tripping out the drill pipe. After the core is drilled, the core and the core barrel are retrieved by an overshot assembly.

n: a flared-end sub run on the end of the tubing string to permit easy access of wireline tools into the tubing ID.

a small fitting on the end of a tubing string that is shaped to allow easier entry of logging tools when pulled back into the tubing from the wellbore below.

n: a tool used to gouge and clean junk and debris from the casing in conjunction with a junk catcher.

a fishing tool used to find and catch wireline in preparation for fishing the line.

n: a formation fluid sampling device, actually run on conductor line rather than wireline, that also logs flow and shut-in pressure in rock near the borehole. A spring mechanism holds a pad finnly against the sidewall while a piston creates a vacuum in a test chamber. Formation fluids enter the test chamber through a valve in the pad. A recorder logs the rate at which the test chamber is filled. Fluids may also be drawn to fill a sampling chamber. Wireline formation tests may be done any number of times during one trip in the hole, so they are very useful in formation testing.

a formation fluid sampling device.