The present invention relates to natural gas and oil well mud logging and coal bore hole logging, and more particularly to methods and apparatus for analyzing the composition of the hydrocarbon gases and {HEAD ~ vapors} entrapped in {TAIL ~ the drilling mud} by measuring the absorption of various laser beams by the hydrocarbon gases and vapors 
The present invention relates to natural gas and oil well mud logging and coal bore hole logging , and more particularly to methods and apparatus for analyzing the composition of the hydrocarbon gases and { HEAD ~ vapors } entrapped in { TAIL ~ the drilling mud } by measuring the absorption of various laser beams by the hydrocarbon gases and vapors
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