DRILLING MUD Russian patent published in 2019 - IPC C09K8/08

Abstract RU 2681614 C2

FIELD: drilling of soil or rock.

SUBSTANCE: invention relates to the field of drilling deep wells, namely to non-clay biopolymer drilling fluids. Drilling fluid containing, mass %: polyacrylamide AK 631 grade A 930 – 0.05; starch reagent for drilling “BurS” – 3; biopolymer xanthan – 0.4–0.6; nitrilotrimethylphosphonic acid NTF – 0.05; calcium carbonate – 6–8; potassium chloride – 3–6; water is the rest.

EFFECT: technical result of the invention is to ensure the stability of the rheological values of the drilling mud when clay enters it.

1 cl, 1 tbl

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RU 2 681 614 C2

Authors

Lyshko Oleg Georgievich

Lyshko Georgij Nikolaevich

Lyshko Aleksandr Georgievich

Dates

2019-03-11—Published

2017-07-17—Filed