METHOD OF OIL RESERVOIR DEVELOPMENT Russian patent published in 2021 - IPC E21B43/16 E21B43/12 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry; it can be used in the development of heterogeneous productive reservoirs by wells with a horizontal end. According to the method, drilling or selection of an already drilled horizontal production well is carried out. The intervals of the productive reservoir are distinguished along the horizontal trunk of the producing well, which differ in their properties. The pump and the pump-compressor pipe pillar are lowered into the producing well to the mouth. The production of the producing well is lifted to the surface by a pump through the inner tube space. At the same time, a pre-drilled impact injection well is pre-drilled or selected. The intervals of the reservoir are distinguished along the trunk of the injection well, through which the corresponding intervals of the productive reservoir opened by the producing well are influenced. The layout is lowered into the injection well on the pump and compressor pipe pillar. It consists of a lower packer, a cross coupling, an upper packer, branch pipes, a valve equipment case with electric valves located in it to regulate and distribute the flow of the injection fluid flowing through the pump and compressor pipe pillar in each of the intervals and pressure gauges-thermometers for measuring the injection pressure in each of the intervals. In the injection well, the reservoir intervals are separated by a lower packer. The upper interval is cut off from the annulus space using the upper packer. With the help of coaxially arranged branch pipes and a cross coupling, independent channels are organized that hydraulically connect the electric valves and the corresponding intervals. Start of production and injection wells is carried out. In this case, the liquid is pumped into the injection well alternately in each of the intervals. The flow rate of the producing well is controlled and the interval in which the injection is carried out according to the time or pressure parameter is changed.

EFFECT: increase efficiency of oil reservoir development due to the organization of the injection control process in the influencing injection well.

2 cl, 2 dwg