Borehole Logging for Coal and Mineral Exploration

Borehole logging for coal and mineral exploration helps a project team examine changes in the physical properties of formations along a borehole. Selecting useful measurements starts with the geological question: which layers need correlation, which intervals need closer investigation and which borehole conditions may affect the readings?

Choose measurements that answer the project question

Different logging methods record different properties. The USGS summary of borehole geophysical logging methods distinguishes caliper measurements of borehole diameter, electrical measurements of formation and fluid properties, natural gamma measurements, and acoustic observations. This reference describes measurement principles; it is not a specification for an individual SAVIGEO instrument.

Use the survey brief to choose a complementary set of tools. A curve should be considered alongside other logs and the available drilling or geological records. A single response does not, by itself, establish a complete interpretation of the formation.

Compare the relevant equipment categories

SAVIGEO offers electrical borehole logging tools, including lateral resistivity and spontaneous-potential configurations, and sonic logging instruments. Borehole parameter tools provide options for measurements such as caliper and temperature. Review each product page for the functions of the specific model.

When comparing options, check the target depth, hole diameter, casing and fluid conditions, together with probe size and operating limits. Include the acquisition unit, cable, winch and software in the discussion. Compatibility needs to be confirmed for the complete system.

Plan quality checks and interpretation

Agree on calibration records, depth reference, repeat measurements where appropriate and the required data files before field work. Record changes in equipment configuration and borehole conditions so the interpretation team can evaluate the logs in context.

Browse our complete logging equipment catalogue or discuss your coal or mineral exploration requirements with SAVIGEO. Final tool selection should follow the project team’s technical review.

Publication and technical reference

Published by SAVIGEO Borehole Geophysical Instruments Co., Ltd. Updated 13 October 2026. The linked USGS methods summary is a general technical reference, not an endorsement of products.