Tubing head Definition
A flanged fitting that supports the tubing string, seals off pressure between the casing and the outside of the tubing, and provides a connection that supports the christmas tree.
Related Oil & Gas Terms
Casinghead
A heavy, flanged steel fitting connected to the first string of casing. it provides a housing for slips and packing assemblies, allows suspension of intermediate and production strings of casing, and supplies the means for the annulus to be sealed off. also called a spool....
Tree saver tool
A tubular device employed as an isolation tool inside the christmas tree, to increase the tree’s pressure rating during stimulation....
Coiled-tubing workover
A workover performed with a continuous steel tube, normally 3/4 inch to 1 inch outside diameter, which is run into the well in one piece inside the normal tubing. lengths of the tubing up to 16,000 feet are stored on the surface on a reel in a manner similar to that used for wireline. the...
Intermediate casing string
The string of casing set in a well after the surface casing but before production casing is set. keeps hole from caving and seals off troublesome formations. also called protection casing....
Ring-joint flange
A special type of flanged connection in which a metal ring (resting in a groove in he flange) serves as a pressure seal between the two flanges....
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