All manifestations of technogenic changes in the depths in the search, exploration and development of oil fields can be very diverse and lead to many not always predictable consequences. The urgency of the task of integrated use and protection of mineral resources requires increased attention both to ensuring control over the implementation of environmental protection measures and for technologies that reduce the technogenic impact on it. The article considers the modern technology of water injection to maintain reservoir pressure in several layers at the same time with a single well, which increases the technological culture of field development, which positively affects the state of the subsoil and the environment. This technology is aimed at reducing capital expenditures for the development of a system for maintaining reservoir pressure, the need to control and regulate the volume of water pumping through individual layers of the exploited facility. Introducing simultaneous-separate injection, it is possible to reduce the number of land-based water conduits, which ultimately leads to a decrease in the man-made load on the environment, ensuring environmental safety.