Threaded tubular connection

Abstract From the Canadian patent

Threaded tubular interference fit interconnections and related production techniques are disclosed that are useful with large diameter tubular members, including pipe bodies that can function, as casing for oil, gas geothermal, disposal and other wells. Preferably there is root-to-crest and/or flank-to-flank interference between nose and inner portions of male and female threads of the disclosed interconnections to substantially seal, them against leakage at the internal and/or external pressure rating of the pipe body, and a run-out portion of the male thread and a corresponding portion of the female thread engage one another with interference to retain threaded engagement between said …