Seamless casing pipe mainly used in oil, gas, water geothermal well drilling. Drilling is a systematic project, which is a joint operation of multi-disciplinary and multi-work using a variety of equipment, tools and materials. At the same time, it is a multi-program close connection, multi-link interlocking continuous operation. The entire process of construction is quite complex. The completion of each well includes three stages: pre-drilling, drilling and completion. There are a series of construction procedures at each stage of the project. The main processes generally include: fixed well location, road survey, foundation construction, installation of derrick, moving, installation equipment, drilling, secondary drilling, drilling, drilling, drilling, drilling, completion, electrical testing, casing, cementing operations, etc.
5 1/2" (139.70mm)Seamless Casing Pipe
API-5CT Casing Pipe
Steel grade: J55,K55,N80,L80,P110,C95,13Cr,28Cr
Threads: BTC,LTC,STC,PRMIUM CONNECTION
Length: R1, R2, R3
139.70(5 1/2" )
H, J, K
J, K, C, L, N, P
C, L, N, P
C, L, N, P, Q
a: Buttress casing is available with regular, special clearance couplings or special clearance couplings with special bevel.
P= Plain end; S= Short round thread; L= Long round thread; B= Buttress thread.
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