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OwnerOlga N. Sizonenko, Rafkhat A. Maxutov +6inventors
InventorsOlga N. Sizonenko, Rafkhat A. Maxutov, Pavel P. Maljushevsky, Georgy G. Gorovenko, Alexei V. Sokolov, Diana N. Lyapis, Vladimir I. Schekin, Natalya I. Kuskova
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The method consists in generating periodically shock waves by initiating the electric discharge in a fluid filling in the well between the electrodes. To initiate the electric discharge, a current-conducting fluid comprising a dielectric fluid and a current-conducting powder material is fed additionally between the electrodes. The device for carrying the method into effect comprises a discharge chamber (5) with positive and negative a system of feeding an initials between the electrodes (3, 4), a system of feeding an initiator between the electrodes (3, 4), electrodes (3, 4), and a surge current generator (2). The device has at least one metering valve (12) with a drive (13) and an additional chamber (9) filled in with a dielectric fluid. A duct (10) having a pressure spool valve (11) is provided in the wall of the additional chamber (9). Inlet and outlet holes (7, 6) are provided in the wall of the discharge chamber (5).
A method for well stimulation in the process of oil and/or gas and/or gas-condensate production, which comprises periodically generating shock waves propagating through the producing formation by initiating an electric discharge in a fluid filling in the well in a gap between electrodes positioned in the well, introducing a current-conducting fluid, comprising a dielectric fluid and a current-conducting powder material, into the gap between the electrodes and initiating the electric discharge between the electrodes.
A device for, stimulating production of a well comprising at least one discharge chamber (5) with positive and negative electrodes (3,4), a system of feeding an initiator between the electrodes (3,4) and a surge current generator (2) connected to the electrodes (3, 4), at least one metering valve (12) for the initiator fluid having a drive (13) connected with the surge current generator (2) to ensure synchronous operation of the metering valve (12) with electric discharge between the electrodes (3,4), and a chamber (9) filled in with a dielectric fluid, the metering valve (12) periodically bringing the discharge chamber (5) in communication with the chamber (9) by means of a duct (10) provided in the wall of the chamber (9) and in the negative electrode (4), a pressure spool valve (11) to ensure a constant differential pressure between the chamber (9) and the well, the wall of the discharge chamber (5) being provided with inlet and outlet holes (7,6) to communicate with the borehole medium.
Dependencies are inferred from the claim text.