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(19)

RU

(11)

2 105 027

(13)

C1

(51)

IPC

(21) (22)

Application

93052690/03, 1992-12-16

(22)

Actual filing date

1992-12-16

(45)

Published

1998-02-20

(72)

Inventor

Jokhann Plank[De]

(73)

Holder

Skv Trostberg Ag

METHOD OF REDUCING FILTRATES OF WASHING DRILLING AQUEOUS COMPOSITION Russian patent published in 1998 - IPC

Abstract RU 2105027 C1

FIELD: chemical industry. SUBSTANCE: added is polysaccharide partially etherified by hydroxyethyl and/or hydroxypropyl as filtrate reducing agent for reducing filtrate of washing drilling aqueous composition comprising mixed metal hydroxides based on clay minerals. EFFECT: more efficient filtrate reducing method. 13 cl, 1 tbl

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RU 2 105 027 C1

Authors

Jokhann Plank[De]

Dates

1998-02-20—Published

1992-12-16—Filed

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