Casing
Pipe that lines the wellbore, isolates formations and carries the pressure loads of the well.
ProductAPI 5CTAPI 5CRAAPI 5B
Overview
Casing is run into the drilled hole and cemented in place to stabilise the wellbore, isolate formations and contain pressure. Each string is designed for burst, collapse and tension, with grade, wall thickness and connection chosen for depth and well conditions.
Key characteristics
- Sizes from 4½ in to 20 in under API 5CT
- Grades from J55 and K55 to N80, L80, P110 and Q125
- Sour-service grades for H₂S environments
- API or premium threaded connections
Applications
- Surface, intermediate and production strings
- Onshore and offshore wells
- Sour and high-pressure wells
Used in Oil & Gas.