18-5/8" 87.5# K55 BIG OMEGA Seamless Casing – R3 Range, API 5CT

The 18-5/8" 87.5# K55 BIG OMEGA Seamless Casing is a robust oilfield casing designed for surface and conductor applications where moderate mechanical strength and efficient sealing are required. Manufactured from API 5CT K55 grade carbon steel, this casing offers consistent yield strength and moderate collapse resistance, making it ideal for shallow to intermediate well depths and low to moderate pressure zones.

Equipped with the BIG OMEGA premium threaded connection, the casing provides superior compression and tensile strength, enhanced gas-tight sealing, and improved structural reliability compared to standard connections. The metal-to-metal seal and robust thread profile offer dependable performance, especially in applications involving cemented surface casing or shallow liner strings.

This seamless casing is supplied in R3 range (approximately 40.0–42.0 ft), reducing connection frequency and optimizing rig time during installation. It is particularly suitable for surface strings in onshore or offshore drilling environments.

Specifications:

– Outer Diameter: 18-5/8" (473.1 mm)
– Weight: 87.5 lb/ft (130.2 kg/m)
– Grade: API 5CT K55
– Connection Type: BIG OMEGA Premium Thread
– Pipe Type: Seamless
– Range: R3 (Length: ~40.0–42.0 ft / 12.19–12.80 m)
– Material Type: Carbon Steel
– End Finish: Premium Threaded & Coupled
– Tensile Strength: ≥95,000 psi (655 MPa)
– Yield Strength: 55,000 psi (379 MPa) min
– Collapse Pressure: As per API K55 performance
– Coupling OD: Matches casing OD or slightly larger
– Thread Sealability: Gas-tight, metal-to-metal seal
– Manufacturing Standard: API 5CT
– Applications: Conductor casing, surface casing, shallow to medium-depth wells, onshore/offshore projects

For further specifications or to inquire about this equipment and ReflowX's logistics services, Please contact ReflowX at info@reflowx.com