Super safety valve
Drill stem testing tools
The Super Safety Valve is controlled by two hydraulic lines and contains
a chemical injection port. It is designed to close by spring force but
has a nitrogen charge chamber to quicken the closing time. This
feature gives the valve the ability to cut wireline and coiled tubing
without the addition of balance line pressure. The valve is held open
by maintaining hydraulic control pressure on the control line. The
nitrogen charge chamber and the balance line chamber are the same
chamber. The nitrogen pressure acts directly on the operating piston
and a floating check valve keeps the nitrogen from escaping from the
chamber into the balance line. The check valve floats on the surface of
the water (or hydraulic fluid) as fluid is pumped into the chamber.
When the fluid is removed, the floating check valve sets down on the
seat and seals the nitrogen charge in the chamber.
The Super Safety valve (SSV) is a master valve used for testing
operations from jack-up or land rigs. The SSV is installed in the test
string so that a BOP ram can be closed on the ram lock sub located in
the top section of the valve. The annulus is then protected by the BOP
rams, and the test string is protected by the safety valve. The Super
Safety valve is capable of cutting wireline and 1.5-in. coiled tubing.
If equipped with a cutter ball, it is capable of cutting 2-in. OD,
.125-in. wall coiled tubing using a nitrogen dome charge or by applying
balance line pressure
Specification
overalllength w/handing sub | 142.65" |
valve section length | 50.90" |
ramlock: | 5.0" OD x 18.0" LONG |
valve bodyOD | 8.0" |
handing subOD | 8.16" |
Hydraulic console panel


ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem
testing tools and surface testing equipment. All the DST tools are
conformed with NACE MR 0175 with traceability,and the DST tools can be
worked in H2S & CO2 above 175 F and full H2S, also with the skilled
and experienced engineers, we can design the drill stem testing tools as
per customer's well condition. Moreover, we supply the training in our
factory and operation instruction at the well site. The DST tools are
exported to USA, Colombia, India, Pakistan, Iran, Brazil etc. and enjoy
the good reputation from the customers.
To shorten the delivery time, we proceeded the DST Tools in stock:
Packer,circualting valve,select tester valve,APR N-valve,OMNI valve,Hydraulic Jar,Tubing string tester
1. Full bore Packer, 7" Casing, working pressure 70Mpa, Working Temperature 400F, Connection: IF, 4set
2. Tester valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4 sets
3. Hydraulic Jar,5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets
4. Rupture disk Circulating valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets
5. Flowhead (surface test tree), 3 1/16", working pressure 70 Mpa. 1set
Should you have any interest or inquiry on the Drill stem testing tools, contact us freely.