Discovery of tar mats in terrestrial gas-condensate reservoirs and its geological significance

TAR mat is reservoir zone containing petroleum rich in asphaltene, and is situated in gascondensate reservoirs and light oil reservoirs. Tar mat is an organic barrier for oil and gas reservoirs. Recently, determination of tar mat has become reality as thin layer chromatography-flame ionization detection(TLC-FID) technique is applied to organic geochemical de-