In the drilling and rock coring industry, a casing shoe is an essential tool used in conjunction with a casing string. Here are the characteristics, usage, features, principle description, and requirements of a casing shoe:
Characteristics:

1. Design: A casing shoe is typically a specialized fitting attached to the bottom end of a casing string. It is designed to facilitate the drilling and casing process by providing a durable and reliable connection between the casing and the rock formation.
2. Material: Casing shoes are commonly made of durable materials such as hardened steel or tungsten carbide to withstand the rigors of drilling and to provide efficient cutting and wear resistance.
3. Cutting Structure: Casing shoes feature a cutting structure, such as carbide or diamond-impregnated cutting elements, that helps penetrate and drill through the rock formation during casing advancement.

Rod&Casing Bit

W Series Casing Bit

X Series Casing Bit