BASIC CONDITIONS OF MARINE HYDROCARBON ACCUMULATION IN NORTHWEST SICHUAN BASIN-HIGH GUALITY SOURCE ROCKS
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摘要: 川西海相油气勘探程度低,油气成藏条件研究薄弱。通过区域地质、烃源岩形成环境、有机地化和有机岩石学等综合研究,重点探讨了龙门山构造带北段海相优质烃源岩发育情况。龙门山北段海相油气成藏的烃源条件好,主要有筇竹寺组、大隆组优质泥质烃源岩和栖霞组、茅口组优质碳酸盐岩烃源岩,而泥盆系烃源岩分布有限,奥陶纪—志留纪缺乏优质烃源岩形成条件。该区经历过大规模油气运移、聚集成藏和后期破坏过程,分析这一过程对川西海相油气勘探具有借鉴意义。预测龙门山逆冲推覆构造带和川西坳陷深处具有良好的海相油气勘探前景。Abstract: The prospecting degree of oil and gas is low and basic research about conditions of hydrocarbon accumulation is weak.Based on comprehensive study of regional geology,conditions of hydrocarbon formation,organic geochemistry and petrology,the developmental conditions of marine hydrocarbon in the north sector of Longmenshan structural belt were discussed.There were fair source rocks for hydrocarbon generation,mainly including muddy source rocks of Qiongzhusi and Dalong Formations and carbo-nate source rocks of Qixia and Maokou Formations.But the Devonian source rocks were limited in terms of their distribution.There was no qualified source rocks in the Ordovician-Silurian.It underwent large scale of hydrocarbon migration,accumulation and late destruction in the Longmenshan belt.Ana-lysis of this process may be helpful for marine petroleum exploration.Based on geological data,it was predicted that there were favorable target zones with better exploration prospects in the thrust-nappe tectonic belt and deepest depression of the northwest Sichuan Basin.
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[1] 宋文海.论龙门山北段推覆构造及其油气前景[J].天然气工业,1989,9(3):2~9 [2] 何军,于三公.龙门山推覆体形成机制及其北段含油性[J].天然气工业,1989,9(3):16~21 [3] 王宓君,包茨,李懋钧等.中国石油地质志(卷十):四川油气区[M].北京:石油工业出版社,1989 [4] 王守德,郑冰,蔡立国.中国南方古油藏与油气评价[J].海相油气地质,1997,2(1):44~50 [5] 陈洪德,庞林,倪新锋等.中上扬子地区海相油气勘探前景[J].石油实验地质,2007,29(1):13~18 [6] 王兰生,韩克猷,谢邦华等.龙门山推覆构造带北段油气田形成条件探讨[J].天然气工业,2005,25(增刊A):1~5 [7] 何鲤,刘莉萍,罗潇.川西龙门山推覆构造特征及有利油气勘探区块预测[J].石油实验地质,2007,29(3):247~252 [8] 杨克明.川西坳陷油气资源现状及勘探潜力[J].石油与天然气地质,2003,24(4):321~331 [9] 徐世琦,周建文,曾庆等.龙门山北段隐伏断层前锋构造带与二叠系含油气远景[J].天然气勘探与开发,2004,27(3):7~10 [10] 蔡开平,王应蓉,杨跃明等.川西北广旺地区二、三叠系烃源岩评价及气源初探[J].天然气工业,2003,23(2):10~14 [11] 谢增业,魏国齐,李剑等.川西北地区发育飞仙关组优质烃源岩[J].天然气工业,2005,25(9):26~28 [12] 周文,邓虎成,丘东洲等.川西北天井山构造泥盆系古油藏的发现及意义[J].成都理工大学学报(自然科学版),2007,34(4):413~417 [13] 黄第藩,王兰生.川西北矿山梁地区沥青脉地球化学特征及其意义[J].石油学报,2008,29(1):23~28 [14] 刘宝珺,许效松.中国南方岩相古地理图集(震旦纪-三叠纪)[M].北京:科学出版社,1994 [15] 马力,陈焕疆,甘克文等.中国南方大地构造和海相油气地质[M].北京:地质出版社,2004.3~84 [16] 腾格尔,胡凯,高长林等.上扬子东南缘下组合优质烃源岩发育及生烃潜力[J].石油实验地质,2006,28(4):359~365 [17] 腾格尔,胡凯,高长林等.上扬子北缘下组合优质烃源岩分布及生烃潜力评价[J].天然气地球科学,2007,18(2):254~259 [18] 王一刚,文应初,洪海涛等.四川盆地开江-梁平海槽内发现大隆组[J].天然气工业,2005,26(9):32~36 [19] 李艳霞,钟宁宁.川东石炭系气藏中固体沥青形成机理探讨[J].石油实验地质,2007,29(4):402~404 [20] 刘光祥,王守德,潘文蕾等.四川广元天井山古油藏剖析[J].海相油气地质,2003,8(1):103~107 [21] 戴鸿鸣,刘文龙,杨跃明等.龙门山北段山前带侏罗系油砂成因研究[J].石油实验地质,2007,29(6):604~608
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