CT Zonal Isolation
The needs of workover rig for zonal isolation can be eliminated by running a packer on coiled tubing into vertical, highly deviated well or even in a horizontal well. By deploying this method, any zone can be permanently abandon or temporarily isolate for various type of remedial operations without killing the well.
Thru tubing inflatable packer is normally used with coiled tubing for isolating zones due its capability to function as a permanent bridge plug, cement retainer, multi-set packer or retrievable packer.
With this type of packer, coiled tubing isolation brings benefit against harsh well conditions as it enables the fluid treatments for water shut off, acid stimulation and chemical treatment to be spot selectively at the zone of interest.