API 5CT L80-1 casing pipe for oil well drilling

API 5CT L80 covers L80-1, L80-9Cr, and L80-13Cr. API 5CT L80-1 casing pipe is used in the H2S environment, while L80-9Cr casing pipe and L80-13Cr casing pipe are used in the CO2 environment.

API 5CT L80-1 casing pipe is placed downhole to provide structural integrity to the wellbore. It must withstand external-collapse pressure from rock formations and internal-yield pressure from fluid and gas. Meanwhile, API 5CT L80-1 casing pipe also needs to hold its own deadweight and withstand the torque and transaxial pressure placed on it while running downhole.

API 5CT L80-1 casing pipe chemical composition:

API 5CT L80-1 casing pipe mechanical properties:

API 5CT L80-1 casing pipe is an advanced type in the process of oil drilling. Its mechanical performance and price are higher than the casing pipe made of J55, K55, N80 and other materials in Group 1 specified in the API Specification 5CT. API 5CT L80-1 casing pipe is applied to more complicated geological conditions, and runs down deeper into the well. In the exploitation of oil and gas, API 5CT L80-1 casing pipe is less popular than J55 casing pipe, K55 casing pipe and N80 casing pipe.