A pup joint is Casing, Pipe or Tubing shorter in length than a standard tubular string. This allows for the adjustment and installation of tools and various tubular components when placement downhole is critical for a specific project. A Spacer Pipe is another reference used to identify pup joints. Pup joint features consist of connections, lengths, weights and material grade.
Tubing Pup Joints:
•Sizes: 2 ⅜" - 4 ½"
•Weight: Standard or Requested Weights
•Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12' (other lengths available upon request)
•Grades: J-55, N-80, L-80, P-110
•Connections EU (external-upset) and NU (non-upset)
•Options: Custom Sizes, Markings, Paint, Plating, and Inspection available on request
Casing Pup Joints:
•Outside Diameter: 4 ½" - 13 3/8"
•All weights available
•Typical Lengths: 1, 2, 3, 4, 6, 8, 10, 12' (other lengths available upon request)
•Grades: H40, J55, K55, N80, L80 T95, C110, P110, Q125
•Connections: SC, LC, BC, Semi Premium, and Premium
•Options: Custom Sizes, Markings, Paint, Plating, and Inspection available on request
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
Pup Joints are manufactured from AISI 4145H or 4140H-modified alloy, heat-treated to 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. Pup Joints are heat-treated to 110,000 PSI minimum yield. All connections are phosphate coated to impede galling during initial make-up.
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