API 5CT J55 K55 N80 L80 P110 Oil Casing Pipe Coupling

1. Size: 4-1/2''-20''
2. End Type: BTC LTC STC
3. Steel Grade: J55, K55, N80-1, N80-Q, L80-9Cr/13Cr, C95, P110 ;
4. Specification: API Spec5CT and API Spec 5B

Casing coupling refers to a type of mechanical connection used in the oil and gas industry to connect lengths of casing pipe together. Casing is a type of steel pipe that is used in drilling and completing oil and gas wells, and it is typically larger and heavier than tubing.

Casing coupling is a component that is used to join two lengths of casing pipe together end-to-end. The coupling is typically longer than tubing coupling and has threads on both ends, which allows it to be threaded onto the end of one length of casing pipe and then onto the end of the second length of casing pipe. This creates a continuous length of casing that can be used to line the borehole of an oil or gas well.

Casing coupling is typically made of high-quality steel and is designed to be strong and durable, able to withstand the harsh conditions encountered in oil and gas wells. The coupling must also be able to maintain a tight, leak-proof seal to prevent fluid loss or contamination from entering the wellbore.

Overall, casing coupling plays an important role in oil and gas drilling operations by providing a reliable and durable connection between lengths of casing pipe, which helps to ensure the integrity and safety of the wellbore.