The primary use of a pup joint is to adjust the overall length of the drill string to land at specific depth whilst staying within the working area of the kelly valve. Pup joints are available in various lengths.
Three types include:
• Crossover Pup Joint
• Drill Pipe Pup Joint
• Tubing Pup Joint
Available Drill Pipe Pup Joints
• 2-7/8" AOH drill pipe pup joints
• 3-1/2" IF drill pipe pup joints
• 4" Full Hole drill pipe pup joints
• 4-1/2" X-Hole drill pipe pup joints
Available Tubing Pup Joints (N-80, L-80, P-110)
• 1" thru 2-1/16" "CS" Hydril
• 2-3/8" thru 3-1/2" "CS" Hydril
• 2-3/8" thru 3-1/2" PH-6
• 2-3/8" and 2-7/8" EUE, 8R
• 3-1/2" EUE, 8R
• 4-1/2" EUE, 8R
• 4-1/2" "CS" Hydril
• 4-1/2" PH-6