American Petroleum Institute (API) 5CT high strength steels are extensively used for casing strings inwells subjected to high cyclic hydraulic fracturing loads. While non-sour grades of API steel such as P110 casing strings have been used satisfactorily for well construction, standard API P110 connections have seen higher rates of failures than pipe body failures in shale wells that require hydraulic fracturing. P110 pipe body and connection failures have also been experienced in cases where poor manufacturing practices have been employed to produce P110 steel casings and connectionsused in wells subjected to these high hydraulic fracturing loads.
API grade for general use in deep wells. This grade is not generally considered suitable for sour condensate wells.
Available in casing dimensions of 114.3 mm (4.5″) to 406.4 mm (16″)
Available in tubing dimensions of 26.7 mm (1.05″) to 114.3 mm (4.5″)
American Petroleum Institute Standard API SPEC 5CT1988 1st edition, the steel grade of API 5CT oil casing pipe can be divided into ten types, including H-40, J-55, K-55, N-80, C-75, L-80, C-90, C-95, P-110 and Q-125. We supply the casing pipe & API 5CT P110 Casing Tubing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option.
|Tensile Strength||862 MPa min||125,000 psi min|
|Yield Strength||758 MPa min||965 MPa max|
|110,000 psi min||140,000 psi max|
|Total Elongation Under Load||0.600 %||–|