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Lubricator |
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Lubricator (PL)
American Completion Tools Lubricators which connect directly to the top
of a X-Mas tree above the master valve are available in
various sizes and end connections and pressure ratings
varying from 5000 to 20000 PSI both for standard and sour
service.
Operating a Lubricator is by far the most dangerous aspect
of well head service work. Therefore extreme caution has
to be exercised while operating this tool.
Measurement of Rod travel is done as follows:
a. Measure from the tie down piece on the tubing head to
the tree cap for a ball weevil hanger.
Or
b. Measure from the top of the tubing head adaptor bottom
flange to the tree cap on a hanger bushing completion.
In each case the window section of lubricator must also be
measured. This will ensure that the proper length of the rod
will be used. Most lubricator rods are marked in 5 such
increments:
a. Needle Valve A
Valve located in manifold by pass assembly closest to
adaptor flange.
b. Needle Valve B
Valve located on manifold bypass assembly closest to the
first UNION connection.
(NOTE: In lubricators upto 5000 PSI, needle valve B is also
used as a bleed down valve. Needle valve C is used in
10000, 15000 & 20000 PSI lubricators to equalize pressure
throughout the tool and not as bleed down valves.)
c. Needle Valve C
Only valve with a pressure gauge attached. Available in
10000, 15000 & 20000 PSI lubricators.
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