Specification of J55 Oil Casing Pipe
Date:2019-11-27View:835Tags:Specification of J55 Oil Casing Pipe
J55 casing is an important equipment in oil drilling. Its main equipment also includes drill pipe, core pipe and casing, drill collar and steel pipe for small diameter drilling.
J55 oil casing specifications are 139.7 * 7.72, 177.8 * 9.19, 244.5 * 8.94, 244.5 * 10.03, 244.5 * 11.05, etc.
J55 oil casing API has three lengths: R-1 is 4.88-7.62m, R-2 is 7.62-10.36m, and R-3 is 10.36m or longer. Some imported goods are marked with LTC, i.e. filament sets. In addition to API standards, there are also a small number of Japanese factory standards imported from Japan.
The common types of casing steel are dz40, dz55 and dz753.
According to SY / t6194-96. The pipe and its joint are of the same steel type. Sulfur content < 0.045%, phosphorus content < 0.045%.
Carry out chemical analysis according to gb222-84. Carry out chemical analysis according to relevant provisions of gb223.
According to the first edition of API Spec 5CT 1988, there are 10 kinds of casing steel grades: H-40, j-55, k-55, N-80, C-75, l-80, C-90, c-95, P-110, q-125.
The bushing shall be provided with thread and joint, or any of the following pipe end forms: flat head, round thread without joint or joint, partial trapezoidal thread with or without joint, straight thread, special end processing, sealing ring structure.