INTEGRATED EQUIPMENT FOR PULSE MULTIMETHOD NEUTRON LOGGING FOR PRODUCTION AND GEOPHYSICAL INVESTIGATIONS OF CASED GAS AND OIL AND GAS WELLS Russian patent published in 2023 - IPC G01V5/10 G01V11/00 

FIELD: geophysical studies.

SUBSTANCE: invention relates to the field of geophysical studies of cased gas and oil and gas wells using field geophysical methods (FGM) to control the development of oil and gas fields and provides studies through tubing. The FGM complex, supplemented by the methods for induction resistivity and dielectric moisture logging, makes it possible to determine in detail the composition of the fluid coming from the perforation interval and its distribution along the wellbore or tubing. The complex equipment consists of two downhole modules connected to each other, while in the body of the upper module there are FGM tools, probes for spectrometric gamma ray logging and scanning magnetic-pulse flaw detection, and in the body of the lower module there are large and small probes with detectors of neutron-neutron logging, a pulsed spectrometric neutron gamma ray probe and a neutron source.

EFFECT: invention allows expanding the range of tasks to be solved at all stages of the life of gas and oil and gas wells based on the use of the main types of interaction of neutrons with rock and fluids saturating it in the process of irradiating them with neutron fluxes from a controlled neutron generator operating both in pulsed and stationary modes, with the ability to switch the mode through the program interface for recording measurement data.

4 cl, 1 dwg