String shoe concrete
with valve BUR-BKBK

For arrangement of casing guiding and facilitates string lowering and horizontal well holes, protection against damage as well as for prevention of string self-filling when lowering in the course of oil and gas wells casing.
Spherical shape of shoe provides string bottom, guiding thereof in vertical, directional.

Shoe is equipped with check valve to prevent self-filling of string and hold pressure after cementing.

Shoe guide is made of concrete which allows quick drilling out.
SPECIFICATIONS