COILED TUBING

MAINTENANCE ASSESSMENT OF COILED TUBING STRING

The life of coiled tubing string is limited by fatigue of the pipe as it is bent on the reel and over the gooseneck and, to a lesser degree, by corrosion. Fatigue accumulation also depends on operating mode, thus service life of two initially identical coiled tubing strings could vary substantial. Coercimetrical control instrumentation provides with the assessment of current fatigue state of coiled tubing string.

Applications:

● Coiled tubing

Equipment:

● Magnetic structurescope (coercimeter) MC-04H-2

Stand tests of samples of coiled tubing string for definition of coercimetrical value of failure beginning were executed.

Using coercimetry monitoring provides with the possibility of extending the real life of the string outside the design life, increasing operating reliability and reduction of losses due to more reliable warning of strings breakages.