歧口凹陷辉绿岩成藏条件分析
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摘要
从钻井标定、地震预测的侵入体宏观分布及勘探现状入手,依据钻井实验分析数据及对歧口凹陷辉绿岩体的岩心观察、铸体薄片鉴定、岩性及蚀变特征等研究,认为该类岩体主要侵入沙一段至东营组地层,其储层以各种成因裂缝、接触变质及围岩蚀变形成的储集空间为主。通过综合分析歧口凹陷的油气成藏要素及时空配置关系,得出其辉绿岩油气藏的成藏模式,进一步指明歧口凹陷辉绿岩体的油气勘探潜力。
The diabase in the Qikou depression of Dagang oilfield,eastern China is analyzed for lithology and alteration characteristics through core observation and cast thin section identification based on analytical data of drilling demarcated and seismic predicted distribution of diabase intrusion.It is concluded that the diabase intrusion mainly occurs in formations from Es1 to Ed,with dominant reservoir space formed by fractures of various genesis,contact metamorphism and wall rock alteration.This paper analyzes the key elements of hydrocarbon accumulation and their spatial and temporal configuration,presents the accumulation model of diabase reservoir,and indicates exploration potential in the diabase rocks in Qikou depression.
The diabase in the Qikou depression of Dagang oilfield,eastern China is analyzed for lithology and alteration characteristics through core observation and cast thin section identification based on analytical data of drilling demarcated and seismic predicted distribution of diabase intrusion.It is concluded that the diabase intrusion mainly occurs in formations from Es1 to Ed,with dominant reservoir space formed by fractures of various genesis,contact metamorphism and wall rock alteration.This paper analyzes the key elements of hydrocarbon accumulation and their spatial and temporal configuration,presents the accumulation model of diabase reservoir,and indicates exploration potential in the diabase rocks in Qikou depression.
引文
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[6]万从礼,金强,李继红,等.东营凹陷纯西辉长岩-变质岩组合油藏成藏机制[J].西北大学学报:自然科学版,2006,36(1):115-119.
[7]张映红,顾家裕.热液环流-侵入岩-外变质带储层发育的重要影响因素[J].特种油气藏,2003,10(1):86-89.
[8]张映红,朱筱敏,吴小洲,等.侵入岩及其外变质带岩相与储集层模型[J].石油勘探与开发,2000,27(2):22-26.
[9]牛嘉玉,张映红.渤海湾盆地侵入岩-外变质带油气藏类型及成藏条件[J].特种油气藏,2003,10(1):22-26.
[2]周立宏,吴永平,肖敦清,等.黄骅坳陷第三系火成岩与油气关系探讨[J].石油学报,2000,21(6):29-34.
[3]吴昌志,顾连兴,任作伟,等.中国东部中、新生代含油气盆地火成岩油气藏成藏机制[J].地质学报,2005,79(4):522-529.
[4]操应长,邱隆伟.济阳坳陷下第三系火成岩储层的控制因素[J].石油勘探与开发,2000,27(5):47-49.
[5]钱峥.济阳坳陷罗151块火成岩油藏储集层概念模型[J].石油勘探与开发,1999,26(6):72-74,94.
[6]万从礼,金强,李继红,等.东营凹陷纯西辉长岩-变质岩组合油藏成藏机制[J].西北大学学报:自然科学版,2006,36(1):115-119.
[7]张映红,顾家裕.热液环流-侵入岩-外变质带储层发育的重要影响因素[J].特种油气藏,2003,10(1):86-89.
[8]张映红,朱筱敏,吴小洲,等.侵入岩及其外变质带岩相与储集层模型[J].石油勘探与开发,2000,27(2):22-26.
[9]牛嘉玉,张映红.渤海湾盆地侵入岩-外变质带油气藏类型及成藏条件[J].特种油气藏,2003,10(1):22-26.
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