دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a fishing device made up on a cable-guide assembly to prevent the cable form falling in the hole. It is used in the recovery of wireline tools.

n: fishing equipment used to recover wireline tools stuck in the hole when the wireline or cable is intact. It consists of a cable hanger, spear point rope socket, spearhead overshot, conventional overshots, drill pipe, and elevators.

n: a method of retrieving wireline tools using a cable-guide assembly.

a device used to provide a short space of free wireline travel before solidly connecting to the BHA in a string. Used in fishing.

n: a well completion design where the completed interval can be accessed at its full bore by wireline or coiled tubing tools. Advantages include smaller hole sizes can be drilled and the entire completion can be accessed by wireline tools or coiled tubing f

a small piece of steel, brass, aluminum bar stock that is designed to break on a certain impact or pressure load and enable another tool function.

(pronounced shiv") n: I. a grooved pulley. 2. support wheel over which tape, wire, or cable rides.

n: A pulley. In oilfield usage, the term usually refers to either the pulleys permanently mounted on the top of the rig (the crown blocks),or the pulleys used for running wireline tools into the wellbore. In the case of the crown blocks, the drilling line,

a grooved pulley.

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 pi: special tools or equipment made to be lowered into and retrieved from the well on a wireline, e.g., packers, swabs, gas-lift valves, measuring devices.

tools specifically designed to operate on wireline conveyance. May be either for slickline (non electrical signal conducting) or for electric line.

n: a workover performed with wireline lowered into the well through the tubing string. A lubricator is rigged up over the wellhead and wireline tools are inserted through the lubricator under pressure. A variety of wireline tools is available.