Carrier apparatus for radioactive well logging instrument

Cement thickness measurements in cased boreholes

Cementing method to improve well logging measurements in cased w

Chlorinated hydrocarbon sensor for cone penetrometer

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

Coal ash monitors

Coal-rock interface detector

Collimated thermal neutron porosity tool

Combination thermal and radiation shield

Compact detector for radon and radon daughter products

Compact detector for radon and radon daughter products

Compaction monitoring instrument system

Compensated density well logging tool

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

Compound optical coupler and support mechanism

Configuration design of detector shielding for wireline and...

Continuous quality control of mined hard and soft coals