A compression test conducted on a 7 5/8-in., 39-lb/ft P-110 casing joint buckled the pipe body rather than the connection. The test, conducted by Grant Prideco for Shell Offshore Inc.'s Brutus oil and ...
The thread connection's root fillet radius of 0.038$ size is the greatest weakness of the API NC type joints and thread. During the slimehole drilling, especially in the deep and ultra-deep gas well, ...
Dry surface coatings for connections of OCTG have been developed that eliminate the need for thread compound. There are many good reasons to reduce or eliminate the use of pipe dope. Environmental ...
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