Auto-fill float collar & shoe

The Auto-Fill Float Collar & Shoe is an advanced casing float equipment designed to support efficient primary casing cementing operations in oil and gas wells. It features auto-fill fill ports that use gravity to allow fluid fill of the casing and help minimize resistance during casing running, while providing reliable check-valve backflow prevention after cement placement. 

Float collars and float shoes are essential completion tools used to guide casing string running, prevent cement backflow, and provide a seating surface for cement wiper plugs. An auto-fill design adds operational efficiency by enabling automatic fill during running without the need for manual venting or additional tools. 

Product Overview

A float shoe is installed at the bottom of the casing string to help guide casing into the hole and reduce differential pressure resistance, while offering a check valve to prevent cement from flowing back into the casing after circulation. A float collar is installed a few joints above the float shoe to provide a secondary check valve and a landing seat for cement wiper plugs. Together, they support smooth casing running and efficient primary cementing operations. 

The Auto-Fill Float Collar & Shoe adopts fill ports that allow fluid to automatically enter the casing during run-in, reducing fill-up time, lowering resistance, and improving run-in efficiency, especially in long or deep well applications.

Key Features & Advantages

• Auto-Fill Gravity Fill Ports
  The float shoe and collar integrate gravity-activated fill ports that allow fluids to fill the casing efficiently during run-in without manual venting.

• Check-Valve Backflow Prevention
  The internal check valves prevent cement slurry or drilling fluids from flowing back into the casing once pumped into the annulus.

• Dual-Function Float Assembly
  Combined float collar and float shoe provide both primary anti-backflow and secondary seating for wiper plugs, enhancing cement displacement efficiency.

• Reduced Running Resistance
  Auto-fill ports help reduce differential fill-up resistance, making casing running smoother and requiring less rig time.

• Broad Application Range
  Suitable for primary casing cementing in onshore and offshore oil and gas wells.

Technical Specifications

Please send us your required specifications, parameters, or technical drawings. Our expert team will help confirm the suitable model and provide a factory quotation within 24 hours.

Email: info@shangshanpetro.com
Contact: Contact Us for a Quote

Applications

The Auto-Fill Float Collar & Shoe is widely used in:

• Primary casing cementing in oil and gas wells

• Applications where efficient casing fill-up is required

• Reducing fill-up resistance during run-in

• Scenarios needing reliable backflow prevention and wiper plug seating

Auto-fill float equipment improves primary cementing effectiveness, enhances cement placement quality, and helps reduce rig operational time.

Frequently Asked Questions

Q1: What is an auto-fill float collar & shoe?
An auto-fill float collar & shoe is a float assembly that uses gravity-activated ports to allow fluid to fill the casing efficiently during run-in, while also providing check-valve backflow prevention after cementing.

Q2: How do gravity-activated fill ports improve operations?
The gravity-activated fill ports allow fluid to enter the casing with less resistance during casing run-in, reducing the need for venting and lowering rig time.

Q3: What sizes are available for this float equipment?
This product is available in sizes from 5″ to 13-3/8″, matching common casing programs in oil and gas wells.

Q4: Why are both float collars and float shoes needed?
A float shoe guides the casing and provides a primary check valve, and a float collar provides a secondary check valve and a landing surface for cement wiper plugs — together ensuring efficient cement displacement and zonal isolation.