Drill pipe swivel, DRS M

The mechanical locking Drag Reduction Swivel (DRS-M) is a single-state drill pipe swivel that allows for the independent rotation of a liner or lower completion deployment string whilst keeping the string below the tool static, protecting jewellery sensitive to torque or rotation, such as sand screens, slotted pipe or open hole packers from harmful torque and extending the envelope of extended reach completions. The DRS-M is capable of swivelling in tension, compression and neutral and through transitions thereof and has a large through bore to accommodate the passage large drop balls or darts for liner hanger and other hydraulic device setting.