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2 440 398

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IPC

C09K8/08(2006-01-01)

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Application

2010129809/03, 2010-07-16

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Start date

2010-07-16

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Actual filing date

2010-07-16

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Published

2012-01-20

(72)

Inventor

Kashkarov Nikolaj GavrilovichVerkhovskaja Nadezhda NikolaevnaNasonova Nadezhda StepanovnaNovikova Elena VladimirovnaPlaksin Roman ValerievichSenjushkin Sergej Valer'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

POLYMER-CLAY DRILLING FLUID IN PERMAFROST AND HIGHLY COLLOIDAL CLAY ROCKS Russian patent published in 2012 - IPC C09K8/08

Abstract RU 2440398 C1

FIELD: oil and gas industry.

SUBSTANCE: polymer-clay drilling fluid in permafrost and highly colloidal clay rocks includes the following, wt %: clay powder - 1.000-3.000, Robus KK biopolymer - 0.300-0.100, Na CMC (carboxymethyl cellulose) - 0.200-0.300, Praestol 2530 - 0.010-0.015, water-repellent fluid "Osnova-GS" - 0.200-0.300, lubricant KSD - 1.000-1.500, water - 97.290-94.785, carbonate weighting material - 37.000-0.000 plus 100, barite weighting material - 14.000-62.000 plus 100.

EFFECT: providing pseudoplastic properties and controlled density of polymer-clay fluid.

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RU 2 440 398 C1

Authors

Kashkarov Nikolaj Gavrilovich

Verkhovskaja Nadezhda Nikolaevna

Nasonova Nadezhda Stepanovna

Novikova Elena Vladimirovna

Plaksin Roman Valerievich

Senjushkin Sergej Valer'Evich

Dates

2012-01-20—Published

2010-07-16—Filed