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Coil Tubing

Its a long metal pipe that is surrounded or rolled over a large reel that is brought to the well site when any well repair or workover activities are to be performed.

Coil Tubing

Coiled tubing has been used to service wells since the early 1960s and continuous improvements in technology and reliability mean that coiled tubing is now a common intervention technique.

It is the ability to operate in live wells, relatively quickly and easily, that makes coiled tubing an obvious choice for many interventions, especially where there is a requirement to pump fluids.

Coiled tubing helps in improving the well & reservoir performance. There are wide range of operations on the site that makes use of coiled tubing such as:
  •     Milling
  •     Drilling
  •     Rock fracturing
  •     Sidetracking
  •     Production tubing
  •     Low bottomhole pressure drilling
  •     Wellbore cleanout
  •     Nitrogen kickoff
  •     Sand control
  •     Cementing
  •     Mechanical isolation
  •     Tube Logging & perforating
Before the CT pipe is pushed into the wellbore, it is uncurled from the reel and straighten up. These coiled pipes are suitable for the use in the onshore as well as offshore oil well locations.

The coil tubing is flexible enough to be wound on a large reel for transportation. It is injected into the existing production string, unwound from the reel and inserted into the well.

Once the intervention operation or any other purpose of using coiled tubing is complete, it is pulled out from the well, put back on the reel and transported to a facility for storage and re-use in other oil and gas wells.

The length of the coil tubing depends on the pipe diameter and the spool size. The average length of a coiled tube used in an oil and gas well applications can range from 2,000 - 15,000 feet.