The X Lock is a selective lock which can be installed in the chosen X landing nipple in a series of X nipples. This lock is used in the standard weight tubing. It uses keys to employ a unified packing mandrel and profile in the landing nipples which allow it to hold the pressure distinctions from either below or above depending on the equalizing assembly chosen.
The “X” lock mandrels with the flow control components are designed for the “X” seating nipples installed in standard weight tubing. These lock mandrels similar in design are selective, this is made possible by their running tools. The lock mandrels maybe installed in any one of multiple seating nipples installed in the tubing string of comparable size.
Once the desired nipple has been located in the tubing string these mandrels are mechanically locked. This is done by driving the expander sleeve behind the keys, holding the mandrel in a locked position.
Running tool required is “X-line” and pulling tool required is “GS” or “GR”.