Preliminary Study on Saturate Components Characteristics and Its Origin of Ful ing Formation Immature Source Rock in Jinghu Sag
- Received Date: 1996-09-06
-
Key words:
- normal alkanes /
- steroids /
- individual normal hydrocarbon isotopes /
- algae source
Abstract: The Saturate components characteristics and its' stable carbon isotope composition of individual n-alkanes of Fuling For-mation immature source rock from Jinghu sag in SuBei Basin have been studied in detail by means of GC, GC-MS and GC-C-MS. As a result,the content of steranes (especially aaa(20R)-C20sterane) of saturate is very abundant. There are threemajor peaks in the distribution of normal alkanes. The highest peak is C22 or C20 normal alkane. According to the study of themaceral composition and the variation in stable carbon isotope of individual hydrocarbons, it is proposed that middle molecularweight (nC19-nC22) normal alkanes are derived from bacteria and algae and steranes (including abundent Cz9 sterane) mainlycome from algae.
Citation: | Hu Guoyi, Ran Qigui, Wang Tieguan, Zhong Ningning. Preliminary Study on Saturate Components Characteristics and Its Origin of Ful ing Formation Immature Source Rock in Jinghu Sag[J]. Acta Sedimentologica Sinica, 1997, 15(S1): 138-141. |