IS 15755 : 2025 Hydrometry - Geophysical Logging of Boreholes for Hydrogeological Purposes - Considerations and Guidelines for Making Measurements
Revised Standard from Last Update.
1 SCOPE
1.1 This standard is a summary of best practice for those involved in geophysical borehole logging for hydrogeological purposes. It describes the factors that need to be considered and the measurements that are required to be made when logging boreholes. It deals with the usual types of logging carried out for delineation of aquifer boundaries; mapping aquifer geometry; assessing the chemical quality and quantity of groundwater; water-supply purposes; landfill investigations and contamination studies; borehole construction and conditions; and subsurface lithological information. A basic geophysical logging system is shown in Fig. 1.
1.2 Applications not specifically considered in this standard include mineral and hydrocarbon evaluation and geotechnical and structural engineering investigations. However, this standard may be a source of general information for any borehole geophysical logging effort.
NOTE - Interpretation of the data collected during logging is referred to in this standard only in a general way. For full details of the analysis and interpretation of geophysical logs, reference should be made to specialized texts.
2 REFERENCES
The standards given below contain provisions, which through reference in this text constitute provisions of this standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of this standards:
| IS No. | Title |
| IS 4410 (Part 1 to Part 20) | Glossary of terms relating to river valley projects |