TREATMENT METHOD OF BOTTOM-HOLE FORMATION ZONE Russian patent published in 2014 - IPC E21B43/27 E21B43/22 

Abstract RU 2513586 C1

FIELD: oil and gas industry.

SUBSTANCE: in the method for treatment of bottom-hole formation zone space above and below the perforation interval is straddled, solvent for asphalt, resin and paraffin deposits (ARPD) is injected into the straddled space, acidic agent - aqueous solution of acid - and displacing fluid is injected with maximum flow rate at pressure not more than 5 MPa, the process is withhold so that components could react and well is developed by swabbing. A mix of solvents MIS-prom, ITPS-RS and process water are used as ARPD solvent with the component ration of (0.34-0.38):(0.03-0.05):(0.57-0.63), polyamide acid salts are used as acidic reagent and oil is displacing fluid.

EFFECT: increase of formation bottom-hole zone treatment efficiency.

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RU 2 513 586 C1

Authors

Ibragimov Nail' Gabdulbarievich

Salikhov Ilgiz Misbakhovich

Akhmadullin Robert Rafaehlevich

Ismagilov Fanzat Zavdatovich

Bikbulatov Renat Rafaehl'Evich

Babichev Igor' Nikolaevich

Abljamitov Ruslan Fikretovich

Ibragimov Danil Abelkhasimovich

Dates

2014-04-20Published

2013-04-23Filed