ASTM D6727/D6727M-16 PDF Download

The ASTM D6727/D6727M-16 standard provides guidelines for the proper collection and application of neutron logs in geotechnical explorations. The standard emphasizes the importance of having a well-developed and documented guide to ensure the quality and reliability of neutron log data.

The standard applies to commonly used neutron logging methods for geotechnical applications and excludes neutron logging for soil moisture measurements or minerals and petroleum applications. It also excludes neutron activation logs that use gamma spectral detectors to characterize induced gamma activity.

A neutron log is defined as a record of the rate at which thermal and epithermal neutrons are scattered back to detectors located on a probe adjacent to a neutron source. Neutron logs are commonly used to delineate lithology and indicate the water-filled porosity of formations. The standard provides formulas and definitions for interpreting and quantitatively treating neutron logs, emphasizing the need for interpretation with other logs and data.