IPSCO CONNECTIONS
RUNNING MANUAL
7
10 ¾ – 14
6
3
16 ≥
4
2
Shoulder Torque
The shoulder torque shall be clearly visible at a minimum of 20% of optimum make-up torque and at
a maximum of 70% of optimum make-up torque and with a 0.020 – 0.200 delta turn range.
If the shoulder torque is outside of these specifications, break out and inspect the pin and box.
A large torque increase prior to 1 turn from shouldering may indicate a problem in make-up such as
cross threading or galling.
See the example graph below that demonstrates the make-up limits for ULTRA™ SF and SFII
connections.
Downhole Rotation
Tenaris recommends using the minimum amount of torque necessary to break the friction between
the tubing or casing and the well bore if downhole rotation of the string is required.
The minimum make-up torque is the safest downhole rotating torque. This will ensure that the
connection can be broken out and made up again.
The ULTRA™ SF and SFII connection should not be rotated beyond the specified operating torque and
RPM should be limited to 40 RPM or lower.
The seals will swell and the connection may not disassemble beyond the operating torque.
Care should be taken to gradually increase and decrease torque when rotating to allow the stored
kinetic energy to dissipate and prevent downhole connection yielding or break out.
Tenaris advises caution as the torque measurement accuracy and dump-valve response time may vary
depending on the specific equipment used.
