Apparatus and method of zonal isolation

A method of isolating multiple zones in a tubular, comprising:

• providing an inner tubular having a plurality of expandable packers, wherein the expandable packers have an inner diameter larger than an outer diameter of the inner tubular and have a non-uniform outer surface;
• positioning the plurality of expandable packers inside the tubular adjacent the zones for isolation;
• and
• expanding the plurality of expandable packers into engagement with the tubular;
• thereby creating undulations in the plurality of expandable packers based on the non-uniform outer surface the expandable packers.

A method of isolating multiple zones in a wellbore, comprising:

• providing a tubular string having a plurality of expandable packers, wherein each of the plurality of expandable packers include a tubing having a non-uniform outer surface;
• positioning the plurality of expandable packers adjacent the zones for isolation;
• and
• expanding the tubing into engagement with the wellbore;
• thereby creating undulations in the tubing based on the non-uniform outer diameter of the tubing.