GEOCHEMICAL CHARACTERISTICS OF OIL IN THE QOM BASIN OF IRAN
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摘要: 伊朗库姆盆地已发现2类成熟原油:1)卡山区块原油类异戊二烯中植烷与姥鲛烷均势;萜烷中以C30藿烷为主,含有较高的Ts、C30重排霍烷,γ蜡烷较低;甾烷中重排甾烷含量高。厄尔布尔士油田原油类异戊二烯含量低、植烷优势明显;萜烷中Ts、C30重排霍烷含量较低,γ蜡烷含量较高;甾烷中重排甾烷含量低。油—油对比表明,原油来自2套不同沉积环境的源岩,展示了伊朗库姆盆地内具有良好的烃源条件。Abstract: It is maturated oil that two kinds of crude oil have been discovered in the Qom Basin of Iran.The abundance of isoprenoidies is relatively low,and no preference between pristane and phytane of crude oil in the Kashan block.There are relatively high abundance of Ts,C30-diahopane and low abundance of gammacerane in trepans.There is relatively high concentration of diacholestane in steranes.The abundance of isoprenoidies is relatively high, and there is preference phytane of crude oil in the Alborz oilfield.There are relatively low abundance of Ts,C30-diahopane and high abundance of gammacerane in trepans.There is relatively low concentration of diacholestane in steranes.These geochemical characteristics of crude oils show that they generated from different of sediment.It indicates that there are good conditions of source rock.
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Key words:
- sterane /
- trepane /
- isoprenoidies /
- biomarkers /
- the Qom Basin /
- Iran
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[1] Stocklin A J,Setudehnia A.Stratigraphic lexicon of Iran,report No 18[M].3rd ed.Teheran:Geological survey of Iran,1991.192~197;244~246 [2] 王世虎,李政,周文等.伊朗库姆盆地油气成藏机理分析[J].石油实验地质,2004,26(3):236~240 [3] 葛瑞全,洪太元,冉江龙.伊朗KASHAN区块库姆组碳酸盐岩层序地层特征[J].油气地质与采收率,2005,12(5):12~15 [4] 王同良.国外含油气盆地简介[M].北京:中国石油天然气总公司信息研究所,1997.231~233 [5] 齐勋.伊朗卡山区块第三系沉积演化与构造运动分析及储层特征[J].油气地质与采收率,2004,11(4):10~12 [6] 王世虎,李政,夏斌等.伊朗卡山地区侏罗系Shemshk组烃源岩特征研究[J].石油实验地质,2003,25(6):769~772 [7] 于俊峰,夏斌,王世虎等.伊朗盆地卡山地区第三系库姆组碳酸盐岩储层特征[J].石油实验地质,2005,27(4):378~382 [8] Peters K E,Moldowan J M.The Biomarker fossils in petroleum and ancient sediments original[M].New Jersey:Prentice Hall,1993.363 [9] Seifert W K,Moldowan J M.Paleoreconstruction by biological markers[J].Geochim et Cosmochim Acta,1981,45:783~794, [10] Philip C T.The ingluence of marine and terrestrial source material on the conposition of petroleum[J].Geochim et Cosmo chim Acta,1974,38:947~966 [11] Bray E E,Evans E D.Distribution of n-paraffins as a clue to recognition of source beds[J].Geochim et Cosmochim Acta,1961,22:2~15 [12] Scalan R S,Smith J E.An improved measure of the odd-even predominance in the normal alkanes of sediment extracts and petroleum[J].Geochim et Cosmochim Acta,1970,34:611~620 [13] Tissot B P,Welte D H.Petroleum formation and occurrence[M].Berlin:Springer-Verlag,1987 [14] Lijmbach G W M.On the origin of petroleum[A].In:Proceedings 9th World Petroleum Congress Vol 2[C].London:Applied Science Publishers,1975.357~369 [15] Mackenzie A S,Li R W,Maxwell J R,et al.Molecular measurements of thermal maturation of Cretaceous shales from the Overthrust Belt,Wyoming,USA[A].In:Bjoroy Med.Advances in Organic Geochemistry 1981[C].New York:Wiley and Sons,1983.496~503 [16] Moldowan J M,Seifert W K,Gallegos E J.Relationship between petroleum composition and depositional environment of petroleum source rocks[J].American Association of Petroleum Geologists Bulletin,1985,69:1 255~1 268 [17] Rubinstein I,Sieskind O,Albrecht P.Rearranged sterenes in a shale:occurrence and simulated formation[J].Journal of the Chemical Society.Perkin Transaction,1975:1 833 ~ 1 836 [18] Sieskind O,Joly G,Albrecht P.Simulation of the geochemical transformation of sterols superacid effects of clay minerals[J].Geochimica et Cosmochimica Acta,1979,43:1 675~1 679 [19] Volkman J K,Alexander R,Kagi R I,et al.A geochemical reconstruction of oil generation in the Barrow Sub-basin of Western Australia[J].Geochimica et Cosmochimica Acta,1983,47:2 091~2 106 [20] Philp R P,Gilbert T D.Biomarker distributions in oils predominantly derived from terrigenous source material[A].In:Leythaeuser D,ed.Advances in Organic Geochemistry 1985[C].Oxford:Pergamon Press,1986.73~84 [21] 洪志华,陈致林,张春荣.济阳坳陷低熟原油特征及成因[J].沉积学报,1997,15(2):89~94
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