Well logging - Wikipedia
Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs ...
Borehole geophysical logging is a method of observing and determining physical and electrical properties of subsurface geology via a borehole. The work is performed with the help of geophysical logging tools, which are specialized instruments used in subsurface studies. These tools are slender, long, waterproof
Borehole Logging - an overview | ScienceDirect Topics
Borehole logging systems are used to make measurements inside boreholes (or drill holes) with borehole probes containing sensors and instrumentation, which transmit the data via a cable, to recording instruments on the surface.
The Role of Borehole Logging in Sustainable Groundwater ...
Through borehole logging, hydrogeologists can obtain continuous records of subsurface conditions, including lithology, porosity, permeability, and fluid content. These logs help in identifying productive aquifers, assessing recharge rates, …
Borehole Geophysical Logs Now Easily Accessible - USGS.gov
Sep 13, 2017 · Digital borehole geophysical logs and related data files are now easily accessible through GeoLog Locator a new web-based, map view and retrieval tool developed by the U.S. Geological Survey.
Borehole Geophysics | U.S. Geological Survey - USGS.gov
Borehole geophysics is the science of recording and analyzing measurements of physical properties made in wells or test holes. Probes that measure different properties are lowered into the borehole to collect continuous or point data that is graphically displayed as a geophysical log.
Standard Guide for Planning and Conducting Geotechnical ...
Mar 23, 2018 · 1.1.1 This guide covers the documentation and general procedures necessary to plan and conduct a geophysical borehole logging program as commonly applied to geologic, engineering, groundwater, and environmental (hereafter referred to as geotechnical) site characterizations.