Positive Equipment LL with DNO

Oselvar (A-1 H, A-2 H, A-3 HT2) – P&A

What happened:

Franks tong was moved into the drill floor from the starboard tool landing are on the skate through the wind wall aperture.
Tong was rigged up onto the normal hydraulic scope arm without issue.
In use the tong worked well. Some 13 3/8″ connections still required hitting with sledgehammer to break, however none of the casing joints needed heating as observed with previous smaller 14 3/8″ open side tong.

What was planned:

Planned to use a Franks XT-22 casing tong on the 13 3/8″ of A1 well. This type of tong has not been used on the project or on the Borgland Dolphin so some unknowns.

13 3/8″ casing on Oselvar A1 = Tenaris Hydril Blue – dopeless connections. Made up to 51K ft/lbs (optimum).

Unclear as to how the connections were requiring up to 90 Kft/lbs with the XT-22 tong to break?

What was learned:

The XT-22 tong has a max torque rating of 90 Kft/lbs. This was reached when breaking out the 13 3/8″ joints on A1.

The smaller 14 3/8″ tong has a max operating torque of 75 Kft/lbs so would never have worked on the 13 3/8″

We have learned that XT-22 tong should be used on Oselvar 13 3/8″ casing and the smaller 14 3/8″ open side tong should only be used on the 9 5/8″ casing.

We have also learned that the larger XT-22 tong can be rigged up and used as per normal on the Borgland Dolphin. The tong fits through the wind wall aperture and does not require any special handling to get rigged up.

What actions are required:

Specify the XT-22 casing tong for breaking out 13 3/8″ casing.