FIELD: oil industry.
SUBSTANCE: use: to evaluate the formations adjacent to the wellbore. Summary of invention is that itdescribes neutron logging tool with multi-source. Device logging comprises several sources aligned along the axis of the detector and the gamma radiation detector of thermal neutrons, which are arranged on both sides of the neutron multi-source.
EFFECT: technical result: allowing adjustment of the angle of the interference field to the preferred location point of focus neutron activity closer to the detector than in the case of a standard source of neutrons.
19 cl, 1 tbl, 13 dwg
