MULTI-TIER VACUUM SIEVE-CONVEYOR UNIT FOR CLEANING DRILLING MUD FROM CUTTINGS Russian patent published in 2022 - IPC E21B21/06 

FIELD: drilling of soil or rocks.

SUBSTANCE: invention relates to drilling of deep wells, in particular, to cleaning of drilling mud. Plant includes a replaceable endless coarse filtration screen, which during operation moves on rollers, vacuum tray installed under the entire surface of the upper branch of the screen, perforated tubes for supplying air under pressure to the cleanable drilling and the filtration screen, sludge container, vacuum unit complete with cyclone drop catcher, vacuum separator, at least one replaceable endless filtration screen for fine cleaning of drilling mud, installed inside the screen of coarse cleaning on its rollers, flow guides of drilling mud passed through the coarse screen onto the fine screen, sludge pan for collecting sludge discharged from fine screen.

EFFECT: production of colloidal particles is excluded, losses of drilling mud are reduced, percentage of cleaned drilling mud is increased, total volume of separated sludge is reduced, noise level is reduced, ecology in places of equipment is improved.

4 cl, 10 dwg