Matching slurry to the rotary rig and drill pipe

Rotary rig productivity tracks slurry fit: too thin and cuttings fall back when the auger is pulled; too thick and the bucket balls up and discharges poorly.

Mix guidance: build the surface with a 6%–8% BENT-N base; make up with PAM-P at 1:300 through pebbles and sand, fine-tuned to bucket diameter and rotation speed with yield point held at 8–12 Pa; beyond 40 m pile depth, raise gel strength so cuttings stay suspended after the stop.

Maintenance: add PAM-POOL pond purification (80–150 g/m³) to control circulating sand, test viscosity and sand content every 2 hours, and top up with depth. Projects show about 22% faster holes and 30% less clean-out time.