METHOD FOR THE TREATMENT OF THE FACE OF A FORMATION AND BOREHOLE APPARATUS FOR IMPLEMENTING SAME

摘要

The group of inventions relates to the oil production industry in respect to the treatment of the face of a producing formation and is intended for increasing the productivity of said producing formation. A body (5) with a channel (16) for communicating with an intertube space closed by a support bush (17) is lowered into a well. A flowrate regulator (36) is mounted in a liner (2). Working fluid is pumped into the formation via the support bush (17) and the flowrate regulator (36). The intake capacity is recorded and, on the basis of this value, the volume of working fluid for subsequently forcing process fluids into the formation is determined. The intertube space above the top of the producing formation is insulated. Said fluids are pumped into the formation via the support bush (17) and the flowrate regulator (36). The intake capacity of the face of the formation is recorded and, on the basis of the value for this, the diameters of the nozzle (23) and the mixing chamber (24) of the ejector pump are set so as to achieve optimum productivity. The ejector pump is lowered into the body (5) supported in the support bush (17). The working fluid is fed under pressure to the nozzle (23) of the ejector pump, which moves the support bush (17) down. The channel (16) for communicating with the intertube space opens. The ejector pump is fixed with the aid of valves in corresponding seats of the body (5) and the support bush (17). The working fluid passes through the nozzle (23), the mixing chamber (24) and the channel (16) into the intertube space. Furthermore, the pressure is relieved in the space in the producing formation. Formation medium is pumped out of the well.