Patent ID: 7926580

Claim:
A coiled tubing multi-zone frac system for fracing a formation adjacent a well bore, wherein the system comprises: a. a coiled tubing multi-zone jet frac tool disposed in a tubing, wherein the coiled tubing multi-zone jet frac tool is secured to a first end of a coiled tubing, wherein the coiled tubing multi-zone jet frac tool comprises: (i) an internal tubular core with an internal tubular core first end with a shoulder, an internal tubular core second end, a first port located between the shoulder and the internal tubular core second end, a second port located between the first port and the internal tubular core second end; (ii) a slidable pack off mandrel comprising: 1. a first mandrel end with a first pack off element; 2. a second mandrel end with a drag collet for slidably engaging the internal tubular core and a locking key retainer; 3. at least one locking key for engaging with the locking key retainer disposed between the first mandrel end and the second mandrel end, wherein the at least one locking key is secured to the slidable pack off mandrel with a locking key retainer fastener; and 4. at least one shearable fastener disposed on the second mandrel end, wherein the slidable pack off mandrel slidably engages the internal tubular core; and (iii) a shifting tool disposed adjacent the internal tubular core second end; b. a sliding sleeve connected to the tubing, wherein the sliding sleeve comprises: (i) a body comprising: 1. a first end; and 2. a second end; (ii) a plurality of perforations disposed between the first end and the second end of the body, wherein the plurality of perforations provide a fluid connection between the tubing and the well bore; (iii) a slidable internal sleeve disposed within the body with a plurality of ports adapted to align with the plurality of perforations and provide a fluid flow between the tubing and the well bore; (iv) a locking profile disposed in the tubing proximate to the second end of the body; and (v) a seal bore disposed in the tubing between the plurality of ports and the locking profile providing a sealing engagement with the coiled tubing jet frac tool.