SYSTEM FOR INSTALLING TUBING ENCAPSULATED CABLE INTO COIL TUBING
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United States of America Patent
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Issued Date -
Jun 18, 2015
app pub date -
Dec 9, 2014
filing date -
Dec 12, 2013
priority date (Note) -
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Abstract
Tubing encapsulated cable is generally difficult to place in the interior of coil tubing while the coil tubing is wound onto a reel on the surface. In various embodiments of the present invention tubing encapsulated cable is placed in the interior of coil tubing by first installing a semi-rigid cable into the coil tubing semi-rigid cable is initially installed by pumping the cable into the coil tubing. The leading end of the cable is then attached to a winch while the trailing end of the cable is attached to tubing encapsulated cable. The winch applies tension to the cable in turn pulling on the tubing encapsulated cable to move the tubing encapsulated cable into the coil tubing. Additionally fluid is pumped through the tubing encapsulated cable in the direction that the tubing encapsulated cable is being installed to assist in overcoming the capstan effect that acts on both the cable and the tubing encapsulated cable. Also the coil tubing may be vibrated to assist in overcoming the capstan effect while installing the tubing encapsulated cable into the interior of coil tubing while the coil tubing is on a reel.
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