Type B Shoe Product

Type B Type B Basket Cementing Shoe

The IRI Type B Basket Cementing Shoe of casing is employed as:

• A Shoe to protect the Running-in String even through irregular and deviated holes.
  
• A Basket to protect the formations below the shoe from cement contamination in the open hole, in washed out sections, in under-reamed and bell holes and/or in zones determined too weak to support the weight of the cement column alone.

The Industrial Rubber Type B Shoe is an economical way to perform its special functions as described below:

1. The Shoe permits circulation through the guide nose while running in.
2. The Basket is held tightly against the core mandrel by a petal retainer for running in clearance.
3. After the setting depth is reached, the ball is dropped to release the basket petal retainer.
4. The ball gravitates to the seat, stopping circulation through the shoe. This diverts all the pressure to expanding the basket.
5. IRI Type B Shoe Baskets are made of Spring Steel Ribs reinforced with overlapping rubber Liners, which allow the expanded tool to better conform to the shape of the hole.
6. All internal parts of the shoe are drillable.

• All Internal Parts are PDC drillable.
  

Tripping Ball is Dropped The shoe is made up on the casing string with the basket closed, and it is run where the casing is to be cemented. The ball is dropped and it gravitates to the seat inside the piston.

Tripping Ball Opens the Cementing Ports  The pump pressure is increased to approximately 400 psi and the piston slides downward, opening up the cementing ports. Pressure inside the casing forces the petal retainer upward, releasing the basket petals. The basket petals expand outward and press against the wall of the hole as the cement flows out of the ports and into the rubber liner. The cement continues to fill the basket and proceeds upward into the annulus over the basket.

Flapper Valve Seals Back Pressure  After the cementing is completed, the flapper valve closes and seals to prevent the backflow of fluids into the casing.

It is advisable to run Cementing Baskets above the tool to support the cement column.