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2 723 256

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(51)

IPC

C09K8/08(2006-01-01)

(21) (22)

Application

2019127140, 2019-08-27

(24)

Start date

2019-08-27

(22)

Actual filing date

2019-08-27

(45)

Published

2020-06-09

(72)

Inventor

Minakov Andrej ViktorovichNeverov Aleksandr LeonidovichZhigarev Vladimir AlekseevichGuzej Dmitrij ViktorovichMikhienkova Evgeniya IgorevnaPryazhnikov Maksim Ivanovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Federalnyj Universitet"

DRILLING MUD FOR DRILLING WELLS IN PERMAFROST CONDITIONS Russian patent published in 2020 - IPC C09K8/08

Abstract RU 2723256 C1

FIELD: soil or rock drilling; mining.

SUBSTANCE: invention relates to drilling oil and gas wells. Drilling mud contains, wt. %: propylene glycol 20.00–80.00; industrial starch 2.00; xanthane biopolymer 0.50; water is the balance.

EFFECT: technical result is maintaining stability of walls of well in complex mining and geological conditions of permafrost rocks, in poorly consolidated rocks, reducing volumes of water consumption, drilling wastes, consumption of reagents.

1 cl, 1 dwg, 1 tbl

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RU 2 723 256 C1

Authors

Minakov Andrej Viktorovich

Neverov Aleksandr Leonidovich

Zhigarev Vladimir Alekseevich

Guzej Dmitrij Viktorovich

Mikhienkova Evgeniya Igorevna

Pryazhnikov Maksim Ivanovich

Dates

2020-06-09—Published

2019-08-27—Filed