METHOD OF FORMATION FACE ZONE DEVELOPMENT Russian patent published in 2012 - IPC E21B43/22 E21B43/27 C09K8/74 C09K8/94 

Abstract RU 2451169 C1

FIELD: oil and gas production.

SUBSTANCE: method of formation face zone development consists in pumping the gas-generating and acid-based reagents, where gas-generating reagent is the compound that includes, wt %: urea 28.4-38.4, sodium nitrite 18.2-27.6, water - the rest, and acid-based reagent is the compound that includes, wt %: inorganic acid 5.2-60.9, surface acting agent 2.4-3.5, ferrum inhibitor 1.4-2.3, flotation agent 7.0-11.4, water - the rest. Note that the proportion of gas-generating and acid-based reagents amounts 1:(1-3), after pumping of the reagents they are held.

EFFECT: increase of injection capacity of intake well and influx to the producing wells, start of development of leak-proof zones not covered by influence.

3 cl, 2 tbl, 2 ex, 1 dwg

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RU 2 451 169 C1

Authors

Nig"Matullin Marat Makhmutovich

Fedorenko Vitalij Jur'Evich

Petukhov Aleksej Sergeevich

Gavrilov Viktor Vladimirovich

Dates

2012-05-20Published

2011-05-05Filed