Multi-zone fracturing with full wellbore access

A system, comprising:

• a sleeve assembly comprising a collapsible baffle and a sliding sleeve disposed adjacent the collapsible baffle, wherein the collapsible baffle is moveable from a radially open position to a radially collapsed position;
• and
• a shifting device disposed on coiled tubing, the shifting device comprising:
• a magnetic shifting component comprising a magnet or other component for outputting a magnetic field to activate the sleeve assembly to collapse the baffle;
• and
• an isolation component comprising a plug or ball shaped to seat in the collapsible baffle when the collapsible baffle is in the radially collapsed position, wherein the sliding sleeve is moveable to expose ports for providing access to a formation from inside a wellbore in response to force from the isolation component on the collapsible baffle.

A method, comprising:

• detecting, via a magnetic sensor system of a sleeve assembly disposed in a wellbore, a magnetic field output from a shifting device disposed on coiled tubing run through the wellbore;
• collapsing a baffle of the sleeve assembly from a radially open position to a radially collapsed position against an inner diameter of a sliding sleeve of the sleeve assembly, in response to detecting the magnetic field from the shifting device moving through the wellbore;
• engaging the collapsed baffle via an isolation component disposed on the shifting device;
• and moving the sliding sleeve along the wellbore to expose ports for providing access to a formation from an inside of the wellbore in response to a force from the isolation component on the collapsible baffle.