Chemometrics as New Tools to Make Sense of Biomarker Data in Condensate Samples of Iranian Gas Field

The 14 samples of gas condensate obtained from GC analysis to determine the conditions of source rock sedimentation environment, lithology of the source rock, the study of the thermal maturation Trend and the separation of the studied area from the viewpoint of the sedimentation environment were analyzed. Results of the hierarchical cluster analysis and principal component analysis on these parameters show the existence of three gas families (gas condensate) in the studied area, which are completely separated from each other in terms of location. Families with numbers I and III are located in the East and West of the Persian Gulf, respectively and Family II is between them. Organic matter source of These hydrocarbons are marine organic matter with some organic matter of continental source, with maturity at the end of the Oil window and early gas window.

Considering the biomarker’s interpretation of the diagrams and its adaptation to the results of HCA and PCA, the trend of changes is such that maturity increases from the Golshan Field to the Salman Field and the sedimentation environment in the southern Persian Gulf, Salman and Golshan (marine Carbonate) is different from its northern fields, Khayyam, Tabnak and Maddar (marine Shale).