FIELD: mining.
SUBSTANCE: determination of the underground formation fracture geometry involves the stages, at which: a) gamma radiation emitted from the fracture is measured; b) background radiation is subtracted from the measured gamma radiation to obtain peak energy measurement; c) the above peak energy measurement is compared to the model of transport-spectrometric response to gamma radiation; and d) geometry of the above formation fracture is determined in compliance with the values related to the above response model. Simulation of geometrical parameters of the fracture involves the stages, at which: a) neutron transfer data is obtained by applying the parameters of the neutron source and parameters of underground formation to simulation as per Monte-Carlo method; b) profile data of gamma radiation increase/decrease is obtained by integrating the above neutron transfer data; c) model of transport-spectrometric response to gamma radiation is generated by applying the simulation as per Monte-Carlo method to the above profile data of gamma radiation increase/decrease; and d) database of transport-spectrometric response to gamma radiation connecting gamma radiation spectra to geometrical parameters of the fracture in the underground formation is created.
EFFECT: improving the effectiveness of inventions owing to increasing operating efficiency and enlarging the possibility of control of fracture dimensions during hydraulic fracturing without work interruption.
20 cl, 4 dwg
