Glass Floatation Collar
The WellBoss Glass Floatation Collar floats production casing through long horizontal sections by trapping an air-filled section below a glass barrier, cutting hook load. It is rated up to 15,000 psi and 400 °F, actuates at 4,500-10,500 psi in adjustable steps, and leaves a smooth ID with fragments no larger than 0.0345". Sizes fit 4-1/2" and 5-1/2" casing.
Key specifications
- Tool type
- Casing floatation collar, glass barrier
- Pressure rating
- Up to 15,000 psi
- Temperature rating
- Up to 400 °F (204 °C)
- Actuation pressure
- 4,500-10,500 psi, adjustable increments (up to 20 shear screws)
- Glass fragments
- Maximum measured OD 0.0345"; pump through standard poppet or flapper float equipment
- Casing sizes
- 4-1/2" 11.6-15.1 lb/ft; 5-1/2" 17.0-26.0 lb/ft
- Strength
- Burst, collapse, tensile and torque equal to or greater than the casing
- Connections
- API BTC or LTC standard; semi-premium or premium on request
- Materials
- Custom NACE casing grades and elastomers on request
- Quality
- Manufactured under ISO 9001:2015
- Product number
- 40-469 series
Sizes and dimensions
| Tool size (in) | Tool size (mm) | Casing weight (lb/ft) | Casing weight (kg/m) | Max OD (in) | Max OD (mm) | ID after actuation (in) | ID after actuation (mm) | Length (in) |
|---|---|---|---|---|---|---|---|---|
| 4.50 | 114.3 | 11.6 - 13.5 | 17.26 - 20.09 | 5.63 | 143.0 | 3.920 | 99.6 | 26.53 |
| 4.50 | 114.3 | 15.1 | 22.47 | 5.70 | 144.8 | 3.826 | 97.2 | 26.53 |
| 5.50 | 139.7 | 17.0 - 23.0 | 25.30 - 34.20 | 6.50 | 165.1 | 4.778 | 121.4 | 26.53 |
| 5.50 | 139.7 | 23.00 | 34.20 | 7.00 | to confirm | 4.670 | 118.6 | 26.53 |
| 5.50 | 139.7 | 26.00 | 38.69 | 7.00 | to confirm | 4.548 | 115.52 | 26.53 |
| Tool size (in) | Casing weight (lb/ft) | Pressure per screw (psi) | Pressure per screw (MPa) | Max screws |
|---|---|---|---|---|
| 4.50 | 11.6 - 15.1 | 684 | 4.72 | 20 |
| 5.50 | 17.0 - 26.0 | 518 | 3.57 | 20 |
Features
- Proprietary glass technology breaks into fine particles; no debris catcher needed above the float equipment.
- Reduces hook load to reach total depth in extended-reach horizontals.
- Smooth ID after actuation with no exposed components.
- Shoe track flexibility; adjustable actuation pressure.
- High-torque design suited to drilling-with-casing.
Applications
- Running production casing in long horizontal and extended-reach wells
- Drilling with casing
- Reducing hook load and drag at total depth
Need a size, rating or metallurgy not listed?
Bespoke design is a WellBoss specialty. Our engineers design packers and completion tools to your specification: casing and tubing, pressure and temperature, ports and feed-throughs, connections, metallurgy and API 11D1 / ISO 14310 validation grade. Designs are built and tested in our Dubai facility.
Questions buyers ask
What pressure and temperature is the WellBoss floatation collar rated to?
Up to 15,000 psi and 400 °F, with actuation pressure adjustable from 4,500 to 10,500 psi.
Does the floatation collar need a debris catcher?
No. The glass breaks into particles no larger than 0.0345" that pump through standard poppet or flapper float collars and shoes.
Which connections are available?
API BTC or LTC as standard, with semi-premium or premium connections on request.
Source: WellBoss 2026 Product Catalog, pages 41-42 (Glass Floatation Collar technical data, 40-469 series). Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.