The Spiral Drill Collar is manufactured from AISI 4145H modified alloy steel, strictly adhering to the API Spec 7-1 and SY/T5144 standards. This specialized drill collar features three dextrogyrate spiral grooves on the outer circumference, designed to significantly reduce the contact area and friction against the well wall. This structural advantage effectively prevents differential pressure sticking during drilling operations.

In terms of specifications, the single weight of the spiral drill collar is approximately 4% lighter than a standard drill collar of the same size. The connection shapes and threads at both ends are fully compatible and consistent with standard drill collar designs.