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3.1 Basic directions of development of methods of acid influence on prizabojnuju a zone of chinks.

Now chemical treatments of chinks, in particular soljano-acid processings, are a prevailing kind of influence among made actions of an intensification of an oil recovery and gas. Their use allows to extract annually in addition significant amount of oil and gas to reduce the cost price of extracted production, to speed up work and profitability of production.

During wide use of acid treatments and compositions for carrying out of the acid treatments directed on perfection of a method of influence, on increase of its efficiency. The big contribution to development of the theory of l of practice of a method of acid treatments was brought by the Soviet researchers: M.I.Maksimov, B.G.Loginov, V.A.Amijan, V.S.Ugolev, D.N.Kuzmichev, E.M.Tosunov, L.G.Malyshev, S.S.Garrifullin, M.F.Putilov, I.S.Mishchenkov, H.M.Sabirov, P.M.Usachyov and others. Among foreign it is necessary to note: M.P.Dunlapa, K.I.Klassona, B.M.Kingstona, A.R.Hendriksona, A.N.Barrona, S.F.Smita, B.V.Viljamsa, S.V.Grave and Others.

Among the basic directions of perfection of carrying out of acid treatments as at us in the country, and abroad, it is necessary to note the following: 1. Decrease in corrosion activity of acid baths:

- Use of inhibitors of acid corrosion, provisional cover of the underground equipment by a protecting film;

zakachka an acid bath as a part of an emulsion in a hydrocarbonaceous liquid;

Pre-award decrease in temperature of a trunk of a chink in the conditions of the raised sheet temperatures.

2. Increase in depth of penetration of active acid in a layer at the expense of retardation of speed of acid removal with breed:

Use of chemical dopants of retardants of reaction of muriatic acid with carbonaceous breed;

Bodying of acid baths;

Acid bath cooling in prizabojnoj to a zone;

- Acid bath emulsification in the hydrocarbonaceous environment or acid bath foaming.

Increase in making through ability of an acid bath at the expense of interfacial tension change at use of surfactants.

Increase in dissolving powers of compositions in relation to asfalto-resinous substances:

- By sharing of a solution of muriatic acid with agents-solvents;

- Combination of acid influence with thermal influence.

5. Prevention of formation of the secondary deposits at carrying out of acid treatments:

Upgrading of preparation of an acid bath before zakachkoj in a layer;

Use of chemical agents-stabilizers;

Use of the chemical agents preventing dissolution of substances, capable further to form the secondary deposits;

Use of agents-buffers;

- Use of the processing methods including extraction of resultants of reaction from a layer prior to the beginning of formation of the secondary deposits.

6. Coverage increase by acid influence of the opened thickness of a processed layer:

Use directed and pointervalnyh processings;

Use of a frothed acid bath.

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A source: Kozhabergenov Murat Mokanovich. Substantiation of effective technologies doizvlechenija residual oil from obvodnennyh layers on an example of XIII horizon of deposit Uzen: Dis.... A Cand.Tech.Sci.: 25.00.17. - M: RGB, 2006. 2006

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