METHOD TO INCREASE WELL PRODUCTIVITY Russian patent published in 2013 - IPC E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: method includes injection of the first and second slug into a reservoir. Injection is carried out via a separating liquid on hydrocarbon or water base into the area of the producing reservoir or above the perforation interval and in series. The well is maintained at a standstill and changed into the mode of hydrocarbon inflow. At the same time injection of separating liquid is carried out in the amount from 0.1 to 50% of the first slug volume. The second slug is injected in the amount from 10 to 150% of the first slug volume. The first slug is additionally provided with a bloating agent in the amount from 0.1% to 15% of the first slug volume, and the first slug is represented by polymer resins, and the second slug - by polymer hardeners.

EFFECT: possibility to increase well yield, reduced sand carryover into a borehole and limited ingress of bottom water.

15 cl, 8 ex, 1 tbl