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Baowi - Casing and Tubing
Casing and tubing strings are the main parts of the well construction. All wells drilled for the purpose of oil or gas production (or injecting materials into underground formations) must be cased with material with sufficient strength and functionality.
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Sizes
- Diameter :from 4 1/2 inch to 20 inch (48.26mm - 508mm) ( Casing)
- Size: OD: 48.26mm-114.3mm ( Tubing)
- Nominal Weight: from 9.5 lb/ft to 169 lb/ft, from 9.5 ppf to 169 ppf
- Lenght: R1, R2, R3
Types
- Seamless casing (small-diameter, medium-diameter)
- ERW casing (medium-diameter)
- Casing nipple
- Casing coupling
Grades
- API 5CT H40
- API 5CT J55
- API 5CT K55
- API 5CT M65
- API 5CT N80 (1,Q)
- API 5CT L80 (9Cr,13Cr)
- API 5CT C90
- API 5CT T95
- API 5CT P110
- API 5CT Q125
Application
- Oil well extracting casing
- Borehole casing
- Borewell casing
Connections
- SC: Short round thread casing
- LC: Long ound thread casing
- BC: Buttress thread casing
- NU: Non-upset tubing
- EU: External upset tubing
- IJ: Integral tubing connections