Comparison of light hydrocarbon between de-absorbed gas and discharged gas in thermal simulation of source rock

Correlation between natural gas and source rock can be made since the de-absorbed gas and the discharged gas are similar in certain extent.However,the physically de-absorbed gas or the chemically acid decomposed gas may not correspond with the discharged gas because source rock samples have been taken out of the original environment.Comparative experiments of light hydrocarbon have indicated that,different from the acid decomposed gas,the de-absorbed gas is similar with the discharged gas.As a result,light hydrocarbon parameters of the de-absorbed gas are chosen in gas-rock correlation.