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Physicals for New Coiled Tubing

Physicals for New Coiled Tubing

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Context 1
... Grades, defined from the initial yield strength, rose from 55 kpsi to 70 kpsi, then on up to 80, 90, 100, and 110 kpsi. Table 1 (an extension of data from API RP 5C7) 1 shows the current situation. ...


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The testing of coiled oilfield tubing is considered to be an important requirement prior to and during offshore servicing. One interesting method is that of wall thickness measurement of ferromagnetic tubes using a noncontact direct current magnetic technique. This paper covers some results obtained with this for carbon steel coiled tubing.