Auto-fill float shoe

The auto-fill valve keeps open which allows the fluid to automatically fill the casing string when operator runs casing string into the wellbore.Reduces surge pressure on Formation.Protects casing against collapse pressure.Reduces surface fill time.After casing running operation, the auto-fill valve

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Description

The auto-fill valve keeps open which allows the fluid to automatically fill the casing string when operator runs casing string into the wellbore.

Reduces surge pressure on Formation.

Protects casing against collapse pressure.

Reduces surface fill time.

After casing running operation, the auto-fill valve is converted from auto-fill mode to conventional check valve mode by pumping a larger flowing rate.