Abstract

Petroleum is the main source of the energy for industry, transportation. Thedemand for crude oil in Indonesia is much higher than its production which leads to current energy crisis. One of solutions for this crisis is to conduct correlation study, which determines the genetic relationship at each oil well. This study is aimed to provide the indication of the genetic relationship (source matter, source rock and the origins) of Bangko and Duri crude oil. The saturated fraction was analyzed using Gas Chromatography (GC). On the basis of the abundance of hydrocarbon aliphatic, the crude oils samples have small ratio value, which is 0,38-0,50 forPr/n-C17 and 0,16-0,18Ph/n-C18. This values indicated that the samples were originated from higher vascular plants (terrestrial). The samples derived from lacustrine environments (lake) have ratio valueof Pr/Ph (2,50-2,90). The calculation from Star diagram have showed that the oil samples in area MB-07, MB-076 dan MB-172 of Bangko with the oil sample in Duri (MD-01) are negatively correlated. The negative correlation indicated that the oil samples have different the genetic relationship source matter and different in enhance oil recovery.

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