دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a workover performed with a continuous steel tube, normally 0.75 inch to I inch (1.9 to 2.54 centimetres) outside diameter, which is run into the well in one piece inside the normal tubing. Lengths of the tubing up to 16,000 feet (4,877 metres) are stored on the surface on a reel in a manner similar to that used for wireline. The unit is rigged up over the wellhead. The tubing is injected through a control head that seals off the tubing and makes a pressuretight connection.

n: a special blowout preventer used in snubbing.

an extension of a retrievable tool that is used to set and release the tool.

n: a control head for injecting coiled tubing into a well that seals off the tubing and makes a pressure-tight connection.

n: one of the pricipal equipment conponents of a coiled tubing unit. The injector head incorporates special profiled chain assemibies to grip the coiled tubing string,and uses a hydraulic drive system that tractive effort for running and retrieving the strin