METHOD FOR DESTROYING AND PREVENTING DEPOSITS AND PLUGS FORMATION IN OIL AND GAS WELLS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC E21B37/00 

FIELD: oil and gas industry.

SUBSTANCE: there performed is an electro-magnetic and acoustic impact to the depth of deposits formation in well. There used are the short current pulses, the length of which is either equal to one of the periods, or is 1/2 of period of electro-magnetic vibrations formed by ground generator together with conductor, but not exceeding 50 maxwell. The voltage supplied to the conductor is selected and set on condition to provide the maximum possible amplitude not exceeding the break-down voltage of its insulation. Well effect is adjusted by changing the pulses relative duration of the supplied current, at that maintaining the amplitude of acoustic vibrations in the well at maximum. The device includes ground pulse generator, high-voltage transformer and metal isolated conductor or standard geophysical cable. Conductor output dropped down into the well at the depth of the deposits is connected to the output of secondary winding of high-voltage matching transformer, the second output of transformer secondary winding is connected to the well pipe string or braiding from steel cargo-carrying cores of geophysical cable.

EFFECT: increase of cleaning efficiency, reduction of power consumption, provision of automatic adjustment.

2 dwg