Coil tubing unit
Patent
·
OSTI ID:5006569
An apparatus and method are described for running a continuous length of coiled, substantially inflexible tubing into a well. The coiled tubing is pulled from a reel by means of a feeding unit which includes opposed roller chains moving along an arcuate path formed by a frame. One of the roller chains is powered and is provided with gripping elements for gripping the tubing. The other roller chain is pressed into engagement with the tubing by fluid pressure in a hose which provides uniform pressure along the arcuate path. The tubing is straightened at the outlet of the arcuate path by a straightening device. (26 claims)
- Assignee:
- EDB-82-160443
- Patent Number(s):
- US 3841407
- OSTI ID:
- 5006569
- Country of Publication:
- United States
- Language:
- English
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