UNIT FOR GRAVITY SETTLING OF DRILLED ROCK PARTICLES AND PARTICLES OF BROKEN HOLLOW GLASS MICROSPHERES OF DRILLING MUD CIRCULATION AND CLEANING SYSTEM Russian patent published in 2024 - IPC E21B21/06 

FIELD: chemistry; various technological processes.

SUBSTANCE: invention relates to devices for cleaning drilling fluids from particles of cuttings and broken glass microspheres and can be used in oil and other industries. Device includes one or two settling tanks with sprinklers, a pipeline with a pump for supplying fresh water to settling tanks and a pipeline with a pump for supplying spent drilling mud to settling tanks, a pipeline with a pump for pumping out of clarified drilling mud with intact hollow glass microspheres, a pipeline with a pump for pumping out of sediment from settling tanks and a device for sediment washing-out. Settling tanks are made in the form of horizontal tanks, each of which has a skewed bottom and a heating circuit with the possibility of maintaining a constant temperature. Fresh water supply pipeline and the spent drilling mud supply pipeline are made with the possibility of controlling the amount of fresh water supplied and spent drilling mud in ratio of 20/80.

EFFECT: increasing the degree of cleaning of the drilling mud, including from the broken microspheres, the glass microspheres remaining intact are preserved as much as possible, increased amount of cleaned drilling mud returned to circulation system.

5 cl, 1 dwg, 1 tbl