J55 is a casing steel grade defined by API (American Petroleum Institute) standards, classified as high-quality carbon structural steel. This casing is primarily used for supporting wellbore walls, isolating formation pressures, and transporting oil/gas, with wide applications in oil wells, gas wells, and geothermal wells. Its outer diameter ranges from 139.7 to 244.5 mm, with wall thickness between 7.72 and 11.05 mm, and lengths categorized into three types: R-1 (4.88-7.62 m), R-2 (7.62-10.36 m), and R-3 (above 10.36 m).
Specification
WT: 0. 205
Length: Casing R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr - 14.63mtr) Tubing R1(6.10mtr-7.32mtr), R2(8.53mtr-9.75mtr), R3(11.58 -12.80mtr)
Connection: Casing: LTC, STC, BTC. Tubing: NUE, EUE,or as customer's requirement.
Standard & Grade : API 5CT, SY/T 6194, BS EN ISO 11960, NF M87-207, JIS G3439, IS:4270, H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, P110, Q-125
