Carrier apparatus for radioactive well logging instrument

Cement thickness measurements in cased boreholes

Cementing method to improve well logging measurements in cased w

Circular induction accelerator for borehole logging

Clay content determination by natural gamma ray spectrometry

Clay type and volume evaluation

Closed feedback injection system for radioactive materials using

Collimated thermal neutron porosity tool

Combination thermal and radiation shield

Compaction monitoring instrument system

Compensated density well logging tool

Compensation of errors in logging-while-drilling density...

Compound optical coupler and support mechanism

Correction of natural gamma radiation logs for the effects of ga

Corrections of gamma-ray responses

Corrections of gamma-ray responses

Cryosonde for well logging tool