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2 262 584

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IPC

(21) (22)

Application

2003130498/03, 2003-10-15

(24)

Start date

2003-10-15

(22)

Actual filing date

2003-10-15

(45)

Published

2005-10-20

(72)

Inventor

Umetbaev V.G.Emaletdinova L.D.Kamaletdinova R.M.Sadykov R.R.Shuvalov A.V.Pridannikov V.G.Plotnikov I.G.Vagapov R.R.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Neftjanaja Kompanija

FORMATION PERMEABILITY CONTROL METHOD Russian patent published in 2005 - IPC

Abstract RU 2262584 C2

FIELD: oil production industry, particularly to restrict water influx into oil and gas wells and to level off injectivity profile in injection wells.

SUBSTANCE: method involves injecting dividing plug, working agent, and then dividing plug again in formation through injection or production well; forcing the injected reagents into well. Working agent is liquid zeolite production residue, namely mother zeolite solution and aqueous strong acid solution. Mother zeolite solution is fed as separate plug or mother zeolite solution and aqueous strong acid solution are injected simultaneously or serially. Sweet water is used as the dividing plug. Waste water is utilized for injected reagents forcing.

EFFECT: increased efficiency of permeability reduction in watered highly porous reservoir.

3 ex, 1 tbl

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RU 2 262 584 C2

Authors

Umetbaev V.G.

Emaletdinova L.D.

Kamaletdinova R.M.

Sadykov R.R.

Shuvalov A.V.

Pridannikov V.G.

Plotnikov I.G.

Vagapov R.R.

Dates

2005-10-20—Published

2003-10-15—Filed