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2 375 552

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(51)

IPC

E21B33/14(2006-01-01)

C09K8/46(2006-01-01)

(21) (22)

Application

2007146743/03, 2007-12-14

(24)

Start date

2007-12-14

(22)

Actual filing date

2007-12-14

(45)

Published

2009-12-10

(72)

Inventor

Lushpeeva Ol'Ga AleksandrovnaLoseva Nina TimofeevnaGevorkjan Inga EhduardovnaFedorov Vjacheslav NikolaevichJakhshibekov Feliks Rudol'FovichVakhrushev Leonid PetrovichAbramov Sergej Arkad'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

HIGH-TEMPERATURE REINFORCED PLUGGING CEMENT Russian patent published in 2009 - IPC E21B33/14 C09K8/46

Abstract RU 2375552 C2

FIELD: mining.

SUBSTANCE: invention is related to the field of mining, namely to cementing of oil and gas wells under conditions of moderate and high temperatures. High-temperature plugging cement includes the following components, wt %: plugging Portland cement 66 - 75, quartz with specific surface of 3500 - 4000 cm²/g 25 - 34, reinforcing additive -fibre with length of 6 mm 0.25 - 0.30. Invention is developed in subclaim.

EFFECT: improved quality of wells reinforcement, development of strong crack-resistant cement ring.

2 cl, 5 ex, 1 tbl

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RU 2 375 552 C2

Authors

Lushpeeva Ol'Ga Aleksandrovna

Loseva Nina Timofeevna

Gevorkjan Inga Ehduardovna

Fedorov Vjacheslav Nikolaevich

Jakhshibekov Feliks Rudol'Fovich

Vakhrushev Leonid Petrovich

Abramov Sergej Arkad'Evich

Dates

2009-12-10—Published

2007-12-14—Filed