METHOD FOR ISOLATION OF NON-PRESSURIZED RANGE OF COLUMN IN A WELL Russian patent published in 2005 - IPC

Abstract RU 2254443 C1

FIELD: oil and gas industry.

SUBSTANCE: method includes determining non-pressurized range location in casing column, forming of screen of viscous-plastic mass in behind-column space by forcing into well and forcing into its behind-column space under excessive pressure of working fluid for interaction thereof with reactive fluid. Well is exposed with excessive pressure until formed viscous-plastic mass reaches no les than 30 percents of final planned structural hardness. Remainders of viscous-plastic mass are removed from casing column. This is performed at excessive pressure, excluding backward flow of main volume of viscous-plastic mass from behind-column space into casing column. After that well is exposed until viscous-plastic mass reaches its final structural hardness.

EFFECT: higher efficiency.

5 cl, 1 ex

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RU 2 254 443 C1

Authors

Khismetov T.V.

Gilaev G.G.

Dzhalalov K.Eh.

Khasaev Ragim Arif Ogly

Dates

2005-06-20Published

2004-08-26Filed