Pup joint is a pipe of non-standard length used to adjust the length of tubular strings to its exact requirement.
Casing Pup Joints:
Outside Diameter: 4 ½ inch – 13 3/8 inch
Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12 ft
Grades: H40, J55, K55, N80, L80 T95, C110, P110
Connections: SC, LC, BC, Semi Premium, and Premium
Tubing Pup Joints:
Sizes: 2 ⅜ inch – 4 ½ inch
Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12 ft
Grades: J-55, N-80, L-80, P-110
Connections EU (external-upset) and NU (non-upset)
Pup Joint Options:
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