STUDY OF FORMING CONDITION ON MARINE EXCELLENT SOURCE ROCKS AND ITS EVALUATION
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摘要: 在对全球范围内不同类型海相烃源岩对比分析的基础上,通过筛选出百余块不同类型烃源岩和含油储集岩的热压加水生排油气模拟实验,结合大中型油气田形成的地质条件,对我国海相优质烃源岩的形成条件进行了综合研究,认为海相优质烃源岩主要形成条件有:1)台内盆地及近滨潟湖、台地斜坡、前缘斜坡及前礁等沉积相带,浮游生物发育,水体稳定且较深,处于还原-强还原环境;2)较高的有机质含量,总有机碳含量TOC≥2%;3)Ⅰ-Ⅱ型干酪根,低成熟阶段形成的大量稠油可以沿富有机质页理面以油相网状传递式连续不断地长距离运移,很容易形成大油田;4)烃源转化过程中古油藏及分散在烃源岩和储集岩中的可溶有机质也是优质再生气源,高成熟-过成熟储集岩中的TOC>0.20%时就属优质气源岩,由其原始"油"生成的总生气量与TOC>2%且为Ⅰ-Ⅱ1型干酪根的烃源岩生成的总生气量基本相当.Abstract: Forming condition of the marine excellent source rocks was studied by the simulation experiment on hydrocarbon generation and expulsion from a mass of different types source rocks and oiliness reservoir rocks,and comparative analysis on geological setting of global large oil and gas field and its marine source rocks.The main forming condition of the marine excellent source rocks form:1)advantage sedimentary environment including intraplatform depression/basin,lagoon,platform slope,anterior border slope and fore reef etc,where have exuberance planktons,tranquilization and deep seawater and reducing environment;2) rich organic matters,total organic carbon content TOC≥2%;3) Ⅰ-Ⅱ type of kerogen;4)paleo-petroleum pool and the dispersed soluble organic matter of the source rocks and reservoir rocks in course of hydrocarbon generation are excellent regenerative gas source during the organic carbon content is large than 0.2%.
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Key words:
- excellent source rock /
- marine /
- forming condition /
- evaluation standard
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[1] Tissot B P,Welte D H.Petroleum Formation and Occurrence:A New Approach to Oil and Gas Exploration[M].Berlin:Springer-Verlag,1978.1-362 [2] Hunt J M.Petroleum geochemistry and geology[M].San fransisco:W H Freeman,1979.1-273 [3] 夏新宇,戴金星.碳酸盐岩生烃指标及生烃量评价的新认识[J].石油学报,2000,21(4):36-41 [4] 梁狄刚,张水昌,张宝民等.从塔里木盆地看中国海相生油问题[J].地学前缘,2000,7(4):534-547 [5] 王兆云,赵文智,王云鹏.中国海相碳酸盐岩气源评价指标研究[J].自然科学进展,2004,14(11):1236-1243 [6] 秦建中,刘宝泉,国建英等.关于碳酸盐岩的评价标准[J].石油实验地质,2004,26(3):281-286 [7] 秦建中.中国烃源岩[M].北京:科学出版社,2005.111-437 [8] 秦建中,刘宝泉,郑伦举等.海相碳酸盐岩烃源岩生排烃能力研究[J].石油与天然气地质,2006,27(3):350-355 [9] 秦建中,金聚畅,刘宝泉.海相不同类型烃源岩有机质丰度热演化规律[J].石油与天然气地质,2005,26(2):177-184 [10] 秦建中,刘宝泉,郑伦举等.海相碳酸盐岩排烃下限值研究[J].石油实验地质,2007,29(4):391-396 [11] 陈建平,赵长毅,何忠华.煤系有机质生烃潜力评价标准探讨[J].石油勘探与开发,1997,24(1):1-5 [12] Murris R J.Middle East-stratigraphic evolution and oil habitat[J].AAPG Bulletin,1980,64:597-618 [13] Pedersen T F,Calvert S E.Anoxia vs.productivity-what controls the formation of organic carbon-rich sediments and sedimentary rocks[J].AAPG Bulletin,1990,74:454-466 [14] Ibach L E J.Relationship between sedimentation rate and total organic carbon content in ancient marine sediments[J].AAPG Bulletin,1982,66:170-188 [15] 赵政璋,张本仁.青藏高原海相烃源岩的油气生成[M].北京:地质出版社,1988.1-634 [16] 秦建中,刘宝泉.加温时间、加水量对模拟实验油气产率及地化参数的影响[J].石油实验地质,2002,24(2):152-157 [17] 秦建中.海相不同类型烃源岩生排烃模式研究[J].石油地质实验,2005,27(1):74-80 [18] 秦建中.青藏高原羌塘盆地海相烃源层的沉积形成环境[J].石油地质实验,2006,28(1):8-14 [19] 秦建中,李志明,刘宝泉等.海相优质烃源岩形成重质油与固体沥青潜力分析[J].石油实验地质,2007,29(3):280-285 [20] 秦建中,付小东,刘效增等.四川盆地东北部气田海相碳酸盐岩储层固体沥青研究[J].地质学报,2007,81(8):1065-1071 [21] 秦建中.海相高演化烃源岩总有机碳恢复系数研究[J].地球科学—中国地质大学学报,2007,32(6):853-860 [22] 付小东,秦建中,腾格尔等.四川盆地东南部海相层系优质烃源层评价—以丁山1井为例[J].石油实验地质,2008,30(6):621-628 [23] Li Maowen.Context and Challenges in Petroleum Geochemical Studies in Canada.2006 [24] 刘文汇,张建勇,范明等.叠合盆地天然气的重要来源:分散可溶有机质[J].石油实验地质,2007,29(1):1-6 [25] 秦建中,付小东,腾格尔等.川东北宣汉-达县地区三叠-志留系海相优质烃源层评价[J].石油实验地质,2008,30(4):372-373
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