Abstract:
In this study, crude oil samples from Petapahan were tested and characterized with
isoprenoid parameters. Determination of thermal maturity level aims to determine the
feasibility of petroleum wells to be exploited because there are many new wells of
petroleum unexploited in the Riau area. Determination of maturity crude oil performed
by analysis saturated fractions. Saturated fraction of the wells petapahan used to
determine the maturity of crude oil based on parameters isoprenoid, n-alkane and
carbon preference index were analyzed using gas chromatography-flame ionize detector
(GC-FID). Based on the value Pr / Ph, Pr / n-C17, Ph / n-C18 and its CPI, the maturity
level of petroleum from oil wells Petapahan, Langgak and Pendalian ripe with order
levels of maturity and quality of the oil is oil Petapahan> Langgak> Pendalian as
indicated by the value of Pr / Ph (2.29; 2.27; 2.29), the value of Pr / n-C17 (0.44; 0.57;
0.44), the value of Ph / n-C18 (0 , 20; 0.22; 0.25) and the CPI (1.095; 1.087; 1.069)
respectively.
