9-5/8" Seamless Casing – API 5CT, Standard Sizes and Grades

The 9-5/8" Seamless Casing is one of the most commonly used sizes in the oil and gas industry, serving as intermediate or production casing in vertical, deviated, or horizontal wells. Manufactured according to API 5CT specifications, this casing is available in a wide range of steel grades, including K55, N80, L80, C95, T95, and P110, to suit different downhole conditions including high pressure, sour service, and high-temperature environments.

Seamless construction ensures consistent mechanical performance, excellent collapse resistance, and high tensile strength, making it ideal for deep and critical well sections. These casings are typically supplied in R2 or R3 length ranges and can be threaded with API BTC (Buttress), STC (Short Thread), or premium connections such as VAM TOP, HYDRA, or TenarisHydril types.

Specifications :

– Outside Diameter: 9-5/8" (244.5 mm)
– Weight Range: 36.0 to 53.5 lb/ft (53.6 to 79.6 kg/m)
– Grades Available: K55, N80, L80, C95, T95, P110, Q125
– Pipe Type: Seamless
– End Connections: BTC, STC, LTC, Premium Threads
– Length Range: R2 (28–32 ft), R3 (40–42 ft)
– Yield Strength: Depends on grade (e.g., K55 = 55,000 psi, P110 = 110,000 psi)
– Tensile Strength: As per API 5CT for each grade
– Collapse/Burst Ratings: Based on wall thickness and steel grade
– Coupling OD: Standard per API 5CT
– Manufacturing Standard: API 5CT
– Applications: Intermediate casing, production casing, geothermal wells, HPHT wells, sour gas environments

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