八面河地区原油、烃源岩中甾类化合物的分布特征及其应用

李素梅; 庞雄奇; 金之钧

Volume 27 Issue 6

Jun. 2002

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LI Su-mei, PANG Xiong-qi, JIN Zhi-jun, 2002. Distribution and Significance of Steroids in Bamianhe Oilfield, East China. Earth Science, 27(6): 711-717.

Citation:

LI Su-mei, PANG Xiong-qi, JIN Zhi-jun, 2002. Distribution and Significance of Steroids in Bamianhe Oilfield, East China. Earth Science, 27(6): 711-717.

LI Su-mei, PANG Xiong-qi, JIN Zhi-jun, 2002. Distribution and Significance of Steroids in Bamianhe Oilfield, East China. Earth Science, 27(6): 711-717.

Citation:

LI Su-mei, PANG Xiong-qi, JIN Zhi-jun, 2002. Distribution and Significance of Steroids in Bamianhe Oilfield, East China. Earth Science, 27(6): 711-717.

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Distribution and Significance of Steroids in Bamianhe Oilfield, East China

Basin & Reservoir Research Center, University of Petroleum, Beijing 102249, China

Received Date: 2002-08-12
Publish Date: 2002-11-25

Abstract

Abstract

samples of shales and mudstones developed in reducing hypersaline and freshwater setting and 20 oil samples of Bamianhe oilfield, Bohai Bay basin were collected for a detailed study of petroleum system. Composition and distribution of specific significance of steroids were discussed as a part of the study. Abundant steroidal biomarkers including C_27-29 regular steranes, C_28-30 4-methyl steranes, dinosteranes and aromatic steranes were detected. The composition and distribution of the steroids in the samples studied were a function of thermal maturity, organic source, paleoenvironment and lithology of potential source rocks. Alga-rich Es₄ shales (brackish water) developed in the south slope of depocenter (Niuzhuang sag) were found particularly rich in steroidal biomarkers including C₃₀ 4-methyl steranes and dinosteranes. While Es₃ mudstones (fresh water) displayed devoid of dinosterane, abundant 4-β steranes were only found in argillaceous limestone and calcareous mudstone, clearly distinguished from the other rocks. Distribution patterns of regular steranes are different from methyl steranes completely indicating different origins of specific compound of the fraction. Isomerization of steroids were observed to be determined by paleoenvironment and lithology besides thermal maturity. Methyl steranes were proved much more useful in oil-source rock correlation than regular steranes. It was not possible that alga-rich Es₄ shales located on the south slope were the primary source rock responsible for the oil discovered based on composition and distribution of steroids.
- lacustrine sediment,
- 4-methyl sterane,
- dinosterane,
- immature oil,
- oil-source correlation,
- Bamianhe oilfield

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References(17)

References

[1]	Thomas J B, Marshall J, Mann A L, et al. Dinosteranes(4, 23, 24-trimethylsteranes) and other biological markers in dinoflagellate-rich marine sediments of Rhaetian age[J]. Organic Geochemistry, 1993, 20(1): 91-104. doi: 10.1016/0146-6380(93)90084-O
[2]	Summons R E, Thomas J, Maxwell J R, et al. Secular and environmental constrains on the occurrence of dinosteranes in sediments[J]. Geochimica et Cosmochimica Acta, 1992, 56: 2437-2444. doi: 10.1016/0016-7037(92)90200-3
[3]	Dahl J, Moldowan J M, Summons R G, et al. Extended 3βalkyl steranes and 3-alkyl triaromatic steroids in crude oils and rock extracts[J]. Geochimica et Cosmochimica Acta, 1995, 59(18): 3717-3729. doi: 10.1016/0016-7037(95)00271-Z
[4]	Wolff G A, lamb NA, Maxwell J R. The origin and fate of 4methyl steroid hydrocarbons. Ⅰ : Diagenesis of 4-methyl sterenes[J]. Geochim Cosmochim Acta, 1986, 50: 335342.
[5]	张林晔, 张春荣. 低熟油生成机理及成油体系——以济阳坳陷牛庄洼陷南部斜坡为例[M]. 北京: 地质出版社, 1999. 5-123. ZHANG LY, ZHANG C R. Origins of immature oils and related petroleum systems: case studies from the southern slope of Niuzhuang sag, Jiyang depression[M]. Beijing: Geology Publishing House, 1999. 5-123.
[6]	Rubinstein N, Eglinton G, Brassell S C, et al. Dinoflagellate origin for sedimentary 4-methyl steroids and 5α(H) stanols[J]. Nature, 1984, 308: 439-441. doi: 10.1038/308439a0
[7]	Summons R E, Volkman J K, Boreham C J. Dinosterane and other steroidal hydrocarbons of dinoflagellate origin in sediments and petroleum[J]. Geochim Cosmochim Acta, 1987, 51: 3075-3082. doi: 10.1016/0016-7037(87)90381-4
[8]	Li S, Li M, Pang X, et al. Petroleum systems in the Bohai Bay basin. PartⅠ : Distribution and organic geochemistry of petroleum source rocks in the Niuzhuang south slope[J]. Organic Geochemistry, 2002.
[9]	Li M, Pang X, Li S, et al. Petroleum systems in the Bohai Bay basin. PartⅡ : Geochemical evidence for significant contribution of mature source rocks to"immature oils" in the Bamianhe field[J]. Organic Geochemistry, 2002.
[10]	曹叔彬. 胜利油田的天然气[A]. 见: 帅德福, 王秉海. 中国石油地质——胜利油田[C]. 北京: 石油工业出版社, 1993, 6: 328-356. CAO S B. Natural gas in the Shengli oilfields[A]. In: SHUAI D F, WANG B H, eds. Petroleum geology of China: Shengli oilfields[C]. Beijing: Petroleum Industry Press, 1993, 6: 328-356.
[11]	Moldowan J M, Fago F J, Lee C Y, et al. Relationship between petroleum composition and depositional environment of petroleum source rocks[J]. Bull Amer Assoc Petrol Geol, 1985, 69: 1225-1268.
[12]	Rullkǒtter J, Marzi R. Natural and artificial maturation of biological markers in a Toarcian shale from northern Germany[J]. Organic Geochemistry, 1988, 13: 639-645. doi: 10.1016/0146-6380(88)90084-8
[13]	Peter K E, Moldowan J M, Sundararaman P. Effects of hydrous pyrolysis on biomarker thermal maturity parameters: monterey phosphatic and siliceous members[J]. Organic Geochemistry, 1990, 15: 249-265. doi: 10.1016/0146-6380(90)90003-I
[14]	Horsfield B, Curry D J, Bohacs K, et al. Organic geochemistry of freshwater and alkaline lacustrine sediments in the Green River Formation of the Washakie basin, Wyoming, USA[J]. Organic Geochemistry, 1994, 22(3-5): 415440.
[15]	Volkman J K, Gagosian RB, WakehamSG. Free and esterified sterols of the marine dinoflagellate gonyaulax polygramma[J]. Lipids, 1984, 19: 457-465. doi: 10.1007/BF02537408
[16]	Volkman JK, BarrettSM, DunstanGA, et al. Geochemical significance of the occurrence of dinosterol and other 4-methyl sterols in a marine diatom[J]. Organic Geochemistry, 1993, 20: 7-15. doi: 10.1016/0146-6380(93)90076-N
[17]	裘松余, 卢兵力, 陈永成. 中国东部早白垩世至晚第三纪海侵[J]. 海洋地质与第四纪地质, 1994, 14: 97106. QIU S Y, LUB L, CHEN Y C. Transgression from Early Cretaceous to Neogene in east China[J]. Marine Geology and Quaternary Geology, 1994, 14: 97-106.