METHOD OF LONG-WAVE AFFECTING ON OIL DEPOSIT AND DEVICE FOR ITS REALIZATION Russian patent published in 2016 - IPC E21B43/25 E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to oil and gas industry and can be used in oil production, including late stages of operation, to increase oil recovery factor, increasing reservoir recovery and reduction of deposits of paraffin substances. Method of long-wave action on oil deposit includes pumping of hydrocarbons from the internal elastic pipeline of coaxial type production well and space between internal elastic and external made from solid material, pipelines of the well. Inner flexible pipeline wall thickness of which is selected so that the flexible pipe was not subject to collapsing, is provided with check valves of ball type and internally with spiral cord. Maintained in pipelines identical hydrostatic pressure. Generating elastic shock waves. Long-wave elastic seismic waves by means of throttle valves from diameter of holes of which depends on the value of energy effecting on productive formation and on the internal elastic pipeline. Note here that is resonance frequency of elastic waves and oscillations delay are controlled to provide optimum amplitude of oscillations of the internal elastic tube. One performs pulse pumping of hydrocarbons from the internal elastic pipeline and from the space between internal elastic and external pipelines.

EFFECT: higher reservoir recovery, intensified oil inflow and reduction of paraffin deposits.

2 cl, 1 dwg