COMPLEX WATER TREATMENT DEVICE Russian patent published in 2018 - IPC E21B43/25 E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas production industry, namely to devices used for the complex exposure to productive formation. Device for complex treatment of wells contains a rotor and a stator with holes, a bearing assembly. Holes in the rotor are cylindrical and are located along the vertical generatrix of the rotor along a tangent to its internal surface. Moreover, the rotor is rigidly connected to the upper and lower sliding bearings with the possibility of sliding along the outer surface of the stator, and along the entire length of the rotor a flat cut is made to ensure imbalance of the rotor. In the cross section, the rotor has the form of a circle with a cut off segment. In this case, the stator is rigidly connected to the axis on which the bearing is mounted, resting on the upper spring stop for moving the rotor, which in turn rests on the lower stop. And the number of all holes in the rotor and stator is determined based on the lowest hydraulic losses.

EFFECT: technical result is an increase in the efficiency of the treatment of the bottom-hole formation zone due to the design features of the device, allowing to carry out a water jet washing with simultaneous impulse processing of a formation, acid and foam acid treatment of the formation, fracturing the formation, and then pumping the proppant through the working elements of the device.

1 cl, 1 dwg