| 摘要 |
The invention relates to geophysical borehole studies of rocks. In the method for determination of mineral density of the rock matrix total density of rock, volumetric humidity of rock and coefficient of its porosity are determined. According to the invention, mineral density of the rock matrix is determined along the borehole section by means of a complex of radio-active bubbling. At that total density of rock in borehole section is determined by means of gamma-gamma logging, and volumetric humidity of rock and coefficient of its porosity, that coincide in the zone of complete water saturation, are determined by means of a set of neutron-neutron and gamma-logging. In the zone of incomplete water saturation volumetric humidity of rock is determined by means of a set of neutron-neutron, gamma-gamma and gamma-logging, and porosity of rock is determined with independent laboratory or other way. By data obtained in such way mineral density of rock matrix is calculated by respective formula. The method provides increase of reliability and accuracy of determination of mineral density of rock matrix on the basis of complex agreement of the set of petrophysical parameters, increase of total productivity and efficiency of works, and decrease of cost of those. |
