GB Connections (GBC) has high standards for quality and thus developed stringent Running Procedures to guarantee our customers get the best finished product possible. All of our connections employ GB Butt and GB 3P Threadforms, which are refined and modified API BTC Threads respectively. It should be noted that API does not specify makeup torques for API BTC Connections.
Like API, GBC recognizes there are numerous variables that can affect field makeup torque values of Buttress-type threadforms. Some of these variables include, but are not limited to, vertical alignment; rig movement (if any); amount, distribution and type of thread compound; experience of casing crew; temperature; type of equipment including number of grip points and calibration; location and orientation of snub line; etc. So, like API, GBC does not specify minimum, optimum, and maximum makeup torque values for field makeup.
Instead, GBC has developed a Running Procedure designed to establish the proper field makeup torque with respect to the actual rig, equipment and personnel, and the conditions that exist at the time of the casing run. This procedure accounts for all of the variables that exist at the time of the run and has proven effective for uniform connection assembly and therefore consistent connection performance throughout the string.
GBC strongly recommends that the procedure be followed closely to determine the proper running torque at the beginning of each casing run. A recommended Minimum Makeup Torque referred to in the Running Procedure is specified on the Data Sheet.
An additional comment is necessary regarding connections assembled with Threadlocking Compounds. Due to the wide variability of various threadlocking compounds, GBC cannot provide generalized makeup torque guidance. However, we do recommend the following.
The entire process should be completed within 5 minutes after the threadlocking compound is mixed. It is our experience that a well planned and set up threadlocking procedure results in more successful connection makeups at higher, but not excessive torques.