Degradable wellbore isolation devices with large flow areas

A method, comprising:

• introducing a wellbore isolation device into a wellbore lined at least partially with casing, the wellbore isolation device providing a plurality of components including a mandrel that defines a central flow passage that allows fluid flow in at least one direction through the wellbore isolation device, wherein at least the mandrel is made of a slowly degradable material;
• anchoring the wellbore isolation device within the casing at a target location, the wellbore isolation device providing an inner diameter and an outer diameter;
• performing at least one downhole operation;
• degrading at least the mandrel upon exposing the wellbore isolation device to a wellbore environment;
• and
• commencing production operations within the wellbore, wherein a minimum production flow area is provided across the wellbore isolation device and is determined by at least one of:
• a flow area across the wellbore isolation device that is at least 1/16 a total flow area of the casing at a location of the wellbore isolation device within the wellbore;
• and
• a flow area resulting from the inner diameter being at least 25% of the outer diameter.

A hydraulic frac plug, comprising:

• a mandrel having a central flow passage defined therethrough and providing an inner diameter and an outer diameter;
• one or more packer elements disposed about the mandrel and expandable to seal against casing secured within a wellbore;
• an upper slip wedge and a lower slip wedge each disposed about the mandrel on opposing sides of the one or more packer elements;
• and
• an upper slip and a lower slip each disposed about the mandrel on opposing sides of the one or more packer elements and actuatable to anchor the hydraulic frac plug within the casing, wherein at least the mandrel is made of a slowly degradable material that degrades when exposed to a wellbore environment,
• wherein a minimum production flow area is provided across the hydraulic frac plug and is determined by at least one of:
• a flow area across the hydraulic frac plug that is at least 1/16 a total flow area of the casing at a location of the hydraulic frac plug within the wellbore;
• and
• a flow area resulting from the inner diameter being at least 25% of the outer diameter, and
• wherein the inner diameter comprises a diameter of the central flow passage, and the outer diameter comprises a diameter of the hydraulic frac plug in an unexpanded configuration.