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2 270 329

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IPC

E21B33/138(2006-01-01)

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Application

2004132815/03, 2004-11-10

(24)

Start date

2004-11-10

(22)

Actual filing date

2004-11-10

(45)

Published

2006-02-20

(72)

Inventor

Ovchinnikov Vasilij PavlovichDvojnikov Mikhail VladimirovichFrolov Andrej AndreevichBud'Ko Andrej Vasil'EvichProlubshchikov Sergej Vasil'Evich

(73)

Holder

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

LIGHTENED GROUTING MORTAR Russian patent published in 2006 - IPC E21B33/138

Abstract RU 2270329 C1

FIELD: oil and gas production.

SUBSTANCE: lightened grouting mortar, designed to shut off levels with abnormally low formation pressures, contains, wt %: Portland cement 85, hollow aluminosilicate microspheres 15, nitrogen 0.035-0.04 (above 100%), and water 45-60.

EFFECT: reduced density of mortar below 1400 kg/m³ with preserved physico-mechanical properties meeting standard requirements for lightened grouting mortars.

3 dwg, 3 tbl

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RU 2 270 329 C1

Authors

Ovchinnikov Vasilij Pavlovich

Dvojnikov Mikhail Vladimirovich

Frolov Andrej Andreevich

Bud'Ko Andrej Vasil'Evich

Prolubshchikov Sergej Vasil'Evich

Dates

2006-02-20—Published

2004-11-10—Filed