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2 502 773

(13)

(51)

IPC

C09K8/20(2006-01-01)

(21) (22)

Application

2012127471/03, 2012-07-03

(24)

Start date

2012-07-03

(22)

Actual filing date

2012-07-03

(45)

Published

2013-12-27

(72)

Inventor

Akim Ehduard L'VovichMakhotina Ljudmila GertsevnaKrjazhev Vladimir NikolaevichKuznetsov Anton Gennadievich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

CLAY DRILLING MUD Russian patent published in 2013 - IPC C09K8/20

Abstract RU 2502773 C1

FIELD: oil and gas industry.

SUBSTANCE: clay drilling mud contains the following, wt %: clay powder 5.5, carboxymethyl substance 0.5, ferrochrome lignosulphonate 0.2-0.3, arabinogalactan 0.2-0.3, water 93.4-93.6; as carboxymethyl substance, it contains carboxymethyl amylose in the form of commercial product Polycell KM K BUR 1N containing the following, wt %: carboxymethyl amylase 70-75, NaCl 15-18 and sodium glycolate 10-12.

EFFECT: control of rheological characteristics and filtration ability of drilling mud considering characteristics of drilled rocks.

2 cl, 1 tbl, 9 ex

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RU 2 502 773 C1

Authors

Akim Ehduard L'Vovich

Makhotina Ljudmila Gertsevna

Krjazhev Vladimir Nikolaevich

Kuznetsov Anton Gennadievich

Dates

2013-12-27—Published

2012-07-03—Filed