DRILL PIPE SLIP
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Drill pipe slips are key tools for gripping drill pipes in oil and gas drilling operations, usually with a three - piece hinge pin connection structure. They are suitable for drill pipes, with relatively shallow tooth patterns to avoid damaging the pipe surface. Often used with drill collar slips, they can clamp drill pipes to prevent them from falling into the well during tripping, making up joints, etc. They also transfer the weight of the pipe string and assist in making - up and breaking - out operations, ensuring the safety and efficiency of the drilling process.
Drill pipe slips：Fit for drill pipes (hollow pipes transmitting torque in drilling).
Drill collar slips：Used for drill collars (heavy solid pipes at the bottom of drill string, providing weight on bit).
Casing slips：Aim at casings (large pipes run into the well for cementing).
Tubing slips：Suitable for tubings (small - diameter pipes for oil/gas production).
Drill pipe slips：Mostly three - piece design, with shallow teeth to avoid damaging the pipe surface.
Drill collar slips：Often four - piece, with deep teeth for strong grip, matching the weight of drill collars.
Casing slips：Predominantly four - piece, with large contact area to prevent casing from crushing.
Tubing slips：Lightweight structure, with teeth designed to protect tubing threads while ensuring grip.
Load - bearing capacity：Drill collar slips > Casing slips > Drill pipe slips > Tubing slips.
Size specifications：Drill collar/casing slips fit large - diameter pipes, while drill pipe/tubing slips fit medium to small diameters.
