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2 026 953

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(51)

IPC

(21) (22)

Application

5017005/03, 1991-08-06

(22)

Actual filing date

1991-08-06

(45)

Published

1995-01-20

(72)

Inventor

Kotskulich Jaroslav Stepanovich[Ua]Dem'Janchuk Vladimir Mikhajlovich[Ua]Senjushkovich Nikolaj Vladimirovich[Ua]Andrejchuk Iosif Stepanovich[Ua]

(73)

Holder

Ivano-Frankovskij Institut Nefti I Gaza

CASING CENTRALIZER Russian patent published in 1995 - IPC

Abstract RU 2026953 C1

FIELD: well casing. SUBSTANCE: casing centralizer has couplings tied by plates of spring arcs. Located on inner surface of spring arcs are sagging limiters in form of wedges installed for relative axial motion. In course of running the casing into well, spring arcs straighten out, wedge move towards each other and press spring arc from casing string to center the casing string in the well. EFFECT: higher efficiency. 2 dwg

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RU 2 026 953 C1

Authors

Kotskulich Jaroslav Stepanovich[Ua]

Dem'Janchuk Vladimir Mikhajlovich[Ua]

Senjushkovich Nikolaj Vladimirovich[Ua]

Andrejchuk Iosif Stepanovich[Ua]

Dates

1995-01-20—Published

1991-08-06—Filed