METHOD OF INTENSIFICATION OF OIL PRODUCTION, LIQUIDATION AND PREVENTION OF DEPOSITS IN OIL AND GAS PRODUCING AND DISCHARGE WELLS AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2018 - IPC E21B43/25 E21B28/00 E21B43/16 E21B37/00 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to the oil and gas production industry, mainly to the production of viscous and extra-viscous oil, and can also be used to intensify oil production complicated by viscous constituents and sediments. Method includes obtaining pulsed energy by switching capacitive energy storage devices and transmitting through a matching device to a cable line cable. At the same time, an intensive wave action is created in the well due to the synchronized and distributed over the length of the cable of the pulsed electric discharge to the well environment by means of technological arresters. They also create a pulsed effect of the magnetic field on the metal pipelines, created by the discharge current in the conductors of the cable line. Cutoff of the voltage pulses arriving at the input of the cable from the switching of the capacitive energy storage device after the breakdown of the medium is carried out by technological arresters. Inductance of the cable is used to limit the discharge current and maintain it in the region of high impedance of the discharge gap of the technological arrestor. In this case, due to the cutoff of the pulses, the stresses are reduced by their duration, leaving only their high-energy part of the action, and increase the energy of the wave action of pulsed discharges per unit time by increasing the frequency of repetition of discharges. To implement the method, the magnetic core of the pulse transformer of the device has a volt-second saturation characteristic, coordinated for a given length of cable with a volt-second characteristic of the technological arrestor in the oil environment, determined for a given voltage by the cross-sectional area of the magnetic core, saturation induction, and the number of turns. Moreover, these parameters are determined from the condition of the minimum duration of the unsaturated state of the magnetic core, but not less than the time of breakdown of the medium by the technological spark gap, the ends of the discharge circuit for connecting the cable line are the ends of the secondary winding of the transformer and/or the ends of the windings of the throttle.

EFFECT: technical result is an increase in the transmission distance for pulsed discharges through a cable of limited cross-section and an increase in the intensity of the wave action along the depth of the well.

13 cl, 4 dwg