Complex components for molded composite frac plugs

A method of manufacturing a downhole isolation plug for sealing a casing in a well, the method comprising:

• manufacturing at least two parts of plural parts during a single step by using a composite material, each part having a preset functionality with regard to sealing the casing;
• and
• adding a sealing element to the plural parts, wherein the sealing element is configured to seal the casing,
• wherein the at least two parts of the plural parts have a single, combined body,
• wherein the body includes at least one layer of fibers, and the layer extends from an upstream end of the body to a downstream end of the body, and
• wherein the body has a same thickness at a region where the at least two parts are combined.

A downhole isolation plug for sealing a casing in a well, the downhole isolation plug comprising:

• a slip ring disposed on a mandrel;
• a mule shoe also disposed on the mandrel;
• a sealing element configured to seal the casing;
• and
• a wedge that is partially placed under the mule shoe and is configured to press the mule shoe away from the mandrel,
• wherein the mule shoe is attached to the mandrel with a locking mechanism located at an interface between the mandrel and the mule shoe,
• wherein the slip ring and the mule shoe are made unitary, as a single element, from a composite material, and
• wherein the single element includes at least one layer of fibers, and the layer extends from a downstream end to an upstream end of the single element.