Comparison between JSHDS and API tool joint
mprove drilling fluid flow flatness to reduce the flow instability.
Reduce the impact abrasion of mud and stone powder to tool joint
Improve the working efficiency of pump
API thread, exposed in the mud with impact and corrosion , easy to form a sharp notch, intensifying the stress concentration.
Characteristic of double shoulder connection
Compatible with API digital connection
Compatible with other double shoulder connection
Allow greater torque , improve torsion performance, 30% -50% increased of torque based on common thread
Smaller OD and larger ID can significantly decrease water loss along the drill string which significantly improve torsion performance and increase the OD wear allowance.
(API NC与 JSHDS)
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