| 摘要 |
The present invention, in certain embodiments, discloses a method for controlling an arch portion of coiled tubing above an injector for injecting the coiled tubing into a bore, the method including monitoring at least height of the coiled tubing arch with monitor apparatus that produces a signal indicative of the height, sending said signal to arch maintenance apparatus, and maintaining height of the arch portion with the arch maintenance apparatus using said signal indicative of said height.
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