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2 651 652

(13)

(51)

IPC

C09K8/24(2006-01-01)

(21) (22)

Application

2017113043, 2017-04-17

(24)

Start date

2017-04-17

(22)

Actual filing date

2017-04-17

(45)

Published

2018-04-23

(72)

Inventor

Gajdarov Mitalim Magomed-RasulovichNorov Azat DavronovichGajdarov Azamat MitalimovichKhubbatov Andrej AtlasovichKhrabrov Dmitrij VladimirovichSutyrin Aleksandr ViktorovichZhirnov Roman Anatolevich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennostyu Institut Prirodnykh Gazov I Gazovykh Tekhnologij Gazprom Vniigaz"

CATION DRILLING MUD FOR UNSTABLE CLAY ROCKS DRILLING Russian patent published in 2018 - IPC C09K8/24

Abstract RU 2651652 C1

FIELD: drilling soil or rock.

SUBSTANCE: invention relates to water-based drilling muds and can be used when drilling oil and gas wells, mainly in drilling unstable swelling of clays and mudstone. Drilling mud comprises, wt%: clay powder 2–4; water soluble cationic copolymer Sylphoc-2540 7–15; xanthan gum 0.1–0.2; polysaccharide PolyKR-K 1–2; water – the rest.

EFFECT: increase drilling efficiency, improve the filtration properties of drilling mud, effective control of the filtration index, increasing the stability of clay rocks, increasing drilling speed and reducing equipment wear.

1 cl, 1 tbl

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RU 2 651 652 C1

Authors

Gajdarov Mitalim Magomed-Rasulovich

Norov Azat Davronovich

Gajdarov Azamat Mitalimovich

Khubbatov Andrej Atlasovich

Khrabrov Dmitrij Vladimirovich

Sutyrin Aleksandr Viktorovich

Zhirnov Roman Anatolevich

Dates

2018-04-23—Published

2017-04-17—Filed