The device is designed to determine the water-saturated porosity of reservoirs in oil and gas production, injection wells, and other types of wells, to identify gas-saturated intervals and the lithological division of well sections under investigation.

• method - two-probe neutron-neutron logging by thermal neutrons (2NNKt)

• number of probes - 2

• type of neutron source - DSNH-8-5

• type of detectors - neutron counters manufactured by LND (USA)