Source and Biomarker Composition Characteristics of Chinese Non-marine Crude Oils

Fu Jiamo; Sheng Guoying

This paper presents an overview on current thinking about sources, ages, and thermal histories of Chinese non-marine crude oils. Terrestrial source rocks, deposited under non-marine conditions in continental environments, have been divided into four major groups: Group A, sedimentary formations of big lake basins in the interior of the Chinese plate; Group B, lacustrine clastic formations in fault-bounded basins; Group C; salt lake evaporite- clastic formations in fault- bounded basins; and Gruop D, lagoonal- lacustrine volcano-clastic formations of intermontane basins. A number of representative crude oil samples were collected from the following four type of source rocks:(1) Lacustrine fresh-brackish water mudstones;(2) Saline to hypersaline mudstones;(3) Lacustrine dolomitic mudstones;(4) Lagoonal tufferous mudstones. The samples were analysed by GC and GC-MS to reveal the characteristic distributions of biological markers in their aliphatic fractions. The distribution of n-alkanes, isoprenoids, steranes and hopanoids as well as other biological marker compounds are discussed briefly. In terms of biological marker parameters of their aliphatic fractions, some immature to marginal mature oil samples sourced from hypersaline and saline mudstones are described. Immature or marginal mature crude oils occurred in shallow depth in Jianghan basin contain high amount of sulphur and organic sulphur compounds, especially abundant thiophene and thiolane homologues with remarkable even carbon number predominace.

Guangzhou Branch of Institute of Geochemistry, Chinese Academy of Scinces

Publish Date: 1991-12-31

Abstract: This paper presents an overview on current thinking about sources, ages, and thermal histories of Chinese non-marine crude oils. Terrestrial source rocks, deposited under non-marine conditions in continental environments, have been divided into four major groups: Group A, sedimentary formations of big lake basins in the interior of the Chinese plate; Group B, lacustrine clastic formations in fault-bounded basins; Group C; salt lake evaporite- clastic formations in fault- bounded basins; and Gruop D, lagoonal- lacustrine volcano-clastic formations of intermontane basins. A number of representative crude oil samples were collected from the following four type of source rocks:(1) Lacustrine fresh-brackish water mudstones;(2) Saline to hypersaline mudstones;(3) Lacustrine dolomitic mudstones;(4) Lagoonal tufferous mudstones. The samples were analysed by GC and GC-MS to reveal the characteristic distributions of biological markers in their aliphatic fractions. The distribution of n-alkanes, isoprenoids, steranes and hopanoids as well as other biological marker compounds are discussed briefly. In terms of biological marker parameters of their aliphatic fractions, some immature to marginal mature oil samples sourced from hypersaline and saline mudstones are described. Immature or marginal mature crude oils occurred in shallow depth in Jianghan basin contain high amount of sulphur and organic sulphur compounds, especially abundant thiophene and thiolane homologues with remarkable even carbon number predominace.

HTML

Reference (1)

[1]

(1) Brassell S.C. and Eghnton G. 1986. Molecular. In Organic Marine Geochemistry(Sohn M.ed)，p. 10-32

American Chemical Society. Washington D.C

(2) Brassell S.C.. Eghnton G. and Fu Jiamo. 1986. In Advances in Organic Geochemistry 1985 lLeythaeuser D

and Rullkotter J.edsl Org.Geochem. V.10. p.927-942. Pergamon press. Oxford

(3) Brassell S.C.. Eglinton G. and Howell V.J.1987. In marine Petroleum Source Rocks I Brooks J. and Fleet A.J

ed).p.79-98. Blackwell Scientific PubiIcaUOns

(4) Brassell S.C., Sheng Guoying,Fu Jiamo and Eglinton 6.1988. Lacustrine Petroleum Source Rocks(Kelts K .Flea Aand Talbot M.eds).

p.299-308. Blackwell ScmUfic Publications.

(5) Fu Jiamo and Sheng Guopng, 1986, In Advances in Science of China-Earth Sciences 1(Tu Guangzhi cd) p.251-286. Science Press. Beiging. China, 1986: John Wiley&Sons. New York

(6) Fu Jiamo and Sheng Guoying, 1989. Appiled Geochemistry, V.4. p.13-32.

(7) Fu Jiamo. Sheng Guoyang. Peng Pingan. Brassell. S.C., Eglinton, G, and Jiang Jigang, 1986, In Ad vances in Organic Geochemistry(Leythaeuser D. and Rullkotter M. eds)，p. l l9-127. Pergamon Press, Oxford.

(8) Fu Jiamo. Sheng Guoying and Liu Dehan, 1989, In Lacustrine Petroleum Source rocks(Kelts K.. FleetA. and Talbot M.eds). p.279-289. Blackwel) Scientific Publications.

(9) Huang Difang, Shang Huiyua and Li Jinchao, 1984, Advances in theoretical research on continental oil neration in China. Beifing Petroleum Symposium, Beijing, September.

(10) Mello M. R.，Gaglianone P. C，Brassell S.C. and Maxwell J.R，1988. Marine and Petroleum Geology V.5, p.205-223.

(11) Moldowan J,M，Seifert W.K, and Gallegos E.J.. 1985. AA1'G Bull. v.69, p.1255-1268.

(12) Palacas J.G., Anders D.E. and King J.d., 1984, AAPG studies in Geolgy 18(Palacas J.G. eds), p.71-96.

(13) Powell T.G.. 1986. Marine Pet. Geol. v.3. p.200-219

(14) Shi Jiyang. Mackenzie A.S., Alexander R. Eglinton G., Gowar A.P.. Wolf G.A. and Maxwell J.R., 1982. Chem, Geol. v.35. p.1-31.

(15) 周光甲，1987.陆相块断盆地中的低成熟原油，有机地球化学论文集地质出版社，中国地质学会石油地质专业委员会编，27-37页。

Source and Biomarker Composition Characteristics of Chinese Non-marine Crude Oils

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related