Studies of the freshly formed surfaces of dielectric minerals, being performed over the past decades, have shown that the dielectric surfaces, resulting at destruction, are not electrically neutral, strong electric fields are generated in the cavities of the crack, that indicated on the greater energy capacity of processes running in the cavity of cracks: the crack can be regarded as a high-energy electrons accelerator. But this phenomenon has not been used for understanding the nature of P.A. Rehbinder’s effect. It is not science, but the practical activity forced drillers to abandon attempts to increase the mechanical drilling speed by the introduction of hardness reducers. The task of the day - getting information from the bottomhole of the drilled well through relaxation currents.