METHOD OF OIL FORMATION DEVELOPMENT CONTROL Russian patent published in 2003 - IPC

Abstract RU 2214507 C1

FIELD: oil producing industry, particularly, methods of control of oil formation development with isolation jobs for equalization of injectivity profile of injection wells and reduction of water inflow to producing wells. SUBSTANCE: method includes injection into formation of aqueous solution of cellulose ether and gel-forming agent containing calcium salt. Gel-forming agent is used in form of 0.1-10.0% suspension of gypsum-containing production wastes. Injection of said aqueous solution and suspension is carried out successively or simultaneously. In particular cases, gypsum-containing wastes are used in form of phosphogypsum - waste of phosphoric acid production, or fluorogypsum - waste of phosphoric acid production, or fluorogypsum - waste hydrofluoric acid production, or borogypsum - waste of boric acid production, or hydrolytic gypsum - waste of cellulose production. EFFECT: higher efficiency of method realizing redistribution of filtration flows and involving of oil-containing zones of formation into active development due to formation of water shutoff composition in high-permeability water-saturated formation zones. 2 cl, 1 tbl, 9 ex

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RU 2 214 507 C1

Authors

Krjuchkov V.I.

Romanov G.V.

Nugmanov O.K.

Gubeeva G.I.

Dates

2003-10-20—Published

2002-01-28—Filed