Pup Joints for Casing Tubing | API 5CT
Pup Joints Overview
Pup joints are shorter lengths of casing, pipe, or tubing used in the oil and gas industry. They allow for the adjustment and installation of various tools and tubular components when precise placement downhole is critical for a specific project. They’re also known as spacer pipes.
Features
- Connections: Various thread types and connection styles.
- Lengths: Range from 2 to 12 feet.
- Weights: Standard or specified weights.
- Material Grades: Includes J-55, N-80, N-80Q & T, L-80, P-110.
- Surface Treatment: Coated surfaces.
- Standards: API 5CT and 5B J55, K55, N80-1, N80-Q, P110, C95.
- Special Services: Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156.
Types and Specifications
Casing pup joints are designed and manufactured according to API 5CT standards to adjust the height of casings. They are made from seamless steel casings.
Tubing pup joints are designed and manufactured according to API 5CT standards to adjust the height of tubings. They are made from seamless steel tubings.
Tubing Pup Joints
- Sizes: 2 ⅜” to 4 ½”.
- Weight: Standard or custom weights.
- Lengths: 1, 2, 3, 4, 6, 8, 10, 12 feet (other lengths available upon request).
- Grades: J-55, N-80, L-80, P-110.
- Connections:
- EU (External Upset)
- NU (Non-Upset)
- Options: Custom sizes, markings, paint, plating, and inspection.
Casing Pup Joints
- Outside Diameter: 4 ½” to 13 ⅜”.
- Weights: All available weights.
- Lengths: 1, 2, 3, 4, 6, 8, 10, 12 feet (other lengths available upon request).
- Grades: H40, J55, K55, N80, L80, T95, C110, P110, Q125.
- Connections:
- SC (Short Coupling)
- LC (Long Coupling)
- BC (Buttress Coupling)
- Semi Premium
- Premium
- Options: Custom sizes, markings, paint, plating, and inspection.
Connection Types
- Pin x Pin
- Pin x Pin with Couplings Loose
- Coupling Box x Pin with Couplings Hand Tight
- Coupling Box x Pin with Couplings Bucked-On
Material and Manufacturing
Pup joints are manufactured from AISI 4145H or 4140H-modified alloy. They are heat-treated to a hardness range of 285-341 with a Charpy “V” notch minimum impact strength of 40 ft/lb at 70°F and one inch below the surface. The heat treatment ensures a minimum yield strength of 110,000 PSI. All connections are phosphate coated to prevent galling during initial make-up.
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Tubing Pup Joint Specifications Outside Diameter 1.05 ~ 4-1/2 in (26.67 ~ 114.3 mm) nominal size OD Weight Standard or Heavy Wall Length 2, 3, 4, 5, 6, 8, 10, 12 ft (with other lengths available upon request) Grade H40, J55, L80, N80/Q, C90, T95, P110 Connection EUE, NUE Standard API 5CT, API 5B Casing Pup Joint Specifications Outside Diameter 4-1/2 ~ 20 in (114.3 ~ 508 mm) nominal size OD Weight Standard or Heavy Wall Length 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20 ft (with other lengths available upon request) Grade H40, J55, K55, L80, N80/Q, C90, T95, P110, Q125 Connection BTC, STC, LTC Standard API 5CT, API 5B Parameters
Product: Pup Joint, OCTG Pup Point Application: Pipe Cut into different length used for connect 2 joints of tubing or casing Size: Tubing Coupling : 2-3/8” – 4-1/2” Casing Couping : 4-1/2” – 20′ Length: 2, 3, 4, 6, 8, 10, 12 ft Pipe Standard: API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95 Surface: Coating Thread: BTC, LTC, STC Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156 Packing: By carton, wooden case, wooden pallet or requirement of customer Diameters: .75″ through 4.5″ nominal O.D. Weights: Standard or Heavy Wall Lengths: 2, 3, 4, 6, 8, 10, 12 ft. Standard (Lengths up to 20′ available upon request) Grades: J-55, N-80, N-80 Q & T, L-80, P-110, 13-CR and other premium grades Connections: EUE, NUE, Buttress SPECIFICATIONS TUBING PUP JOINT OD GRADE END TYPE LENGTH(FT) 2 3/8″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 2 7/8″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 3 1/2″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 4 1/2″ J/K/L/N/P NUE/EUE 2/3/4/5/6/8/10/12 CASING PUP JOINT OD GRADE END TYPE 4 1/2″ J/K/L/N/P LTC/STC/BTC 5″ J/K/L/N/P LTC/STC/BTC 5 1/2″ J/K/L/N/P LTC/STC/BTC 6 5/8″ J/K/L/N/P LTC/STC/BTC 7″ J/K/L/N/P LTC/STC/BTC 7 5/8″ J/K/L/N/P LTC/STC/BTC 7 3/4″ J/K/L/N/P LTC/STC/BTC 8 5/8″ J/K/L/N/P LTC/STC/BTC 9 5/8″ J/K/L/N/P LTC/STC/BTC 10 3/4″ J/K/L/N/P STC/BTC 11 3/4″ J/K/L/N/P STC/BTC 13 3/8″ J/K/L/N/P STC/BTC
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Production process
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