Method of analyzing a number of hydrocarbons contained in a drilling fluid, and associated device

摘要

The method comprises extraction of gases contained in a mud, in order to obtaina gas stream of extracted gases containing hydrocarbons to be analyzed and atleast one parasitic compound. The method comprises transporting the gas streamthrough a transport line (54) and passing it through a separation column (121)in order to separate the hydrocarbons to be analyzed according to their elutiontimes in the separation column (121). The parasitic compound is likely to havean elution time in the separation column (121) between the elution time for thefirst hydrocarbon to be analyzed and the elution time of the final hydrocarbonto be analyzed. The method comprises passing the gas stream over a surface (141)for chemical and/or physical interaction with the parasitic compound in orderto selectively retain the or each parasitic compound without retaining the hydrocarbonsto be analyzed.