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2 486 224

(13)

(51)

IPC

C09K8/20(2006-01-01)

(21) (22)

Application

2011138875/03, 2011-09-22

(24)

Start date

2011-09-22

(22)

Actual filing date

2011-09-22

(45)

Published

2013-06-27

(72)

Inventor

Kurbanov Jaragi MammaevichMozyrev Andrej Gennad'EvichZajkovskaja Tat'Jana VladimirovnaKombarov Rasul KombarovichKurbanov Gazi Jaragievich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Proizvodstvennyj Tsentr

LIGHT SALT MUD Russian patent published in 2013 - IPC C09K8/20

Abstract RU 2486224 C2

FIELD: chemistry.

SUBSTANCE: invention relates to oil and gas industry, particularly drilling mud used when drilling through salt-bearing and terrigenous-carbonate deposits of exploratory and producing wells in abnormally low formation pressure conditions. The salt mud contains, wt %: drilling mud powder 4-6, stabiliser - salt-resistant carboxymethyl cellulose 0.3-1, modified starch 0.8-1.2, sodium chloride 1-20, potassium chloride 3-7, alkali 0.01-0.02, lignosulphonate reagent 1-2, silicate microspheres 4.5-6, water - the balance.

EFFECT: low density.

5 ex, 2 tbl

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RU 2 486 224 C2

Authors

Kurbanov Jaragi Mammaevich

Mozyrev Andrej Gennad'Evich

Zajkovskaja Tat'Jana Vladimirovna

Kombarov Rasul Kombarovich

Kurbanov Gazi Jaragievich

Dates

2013-06-27—Published

2011-09-22—Filed