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IPC

C09K8/46(2006-01-01)

C09K8/48(2006-01-01)

E21B33/13(2006-01-01)

(21) (22)

Application

2014126778/03, 2014-07-01

(24)

Start date

2014-07-01

(22)

Actual filing date

2014-07-01

(45)

Published

2015-08-20

(72)

Inventor

Kuznetsov Vladimir Grigor'EvichShcherbich Nikolaj EfimovichBelej Ivan Il'IchSemenenko Anastasija FedorovnaRomanova Tat'Jana Nikolaevna

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Neftegazovyj Universitet"

WEIGHTED DISPLACEMENT FLUID Russian patent published in 2015 - IPC C09K8/46 C09K8/48 E21B33/13

Abstract RU 2561134 C1

FIELD: oil and gas industry.

SUBSTANCE: weighted displacement fluid includes by wt %: gel powder - 1.92-2.38, Natrosol 250EXR stabiliser - 0.1-0.15, weighting additive - KG-2 galena concentrate 52.54-68.48 and water - the remaining part.

EFFECT: reduced water loss, increased density, sedimentation stability, forming structure capable to bear the weighting additive and excluding coagulation of contact areas between drill muds and grouting mortars in the area of abnormally high reservoir pressure and temperature.

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RU 2 561 134 C1

Authors

Kuznetsov Vladimir Grigor'Evich

Shcherbich Nikolaj Efimovich

Belej Ivan Il'Ich

Semenenko Anastasija Fedorovna

Romanova Tat'Jana Nikolaevna

Dates

2015-08-20—Published

2014-07-01—Filed