北塘凹陷新港探区新生代岩浆活动的石油地质意义
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摘要
黄骅坳陷北塘凹陷近东西走向高密度岩浆岩体导致的布格重力异常高曾被解释为下古生界潜山。新港地区渐新世晚期—中新世早期强烈的岩浆活动与沿海岸带北北东向断裂的大规模走滑伸展有关 ,岩浆活动形成火成岩刺穿圈闭 ,深源热流体萃取分散有机质和对有机质起加氢、催化作用 ,促进了烃源岩中的有机质向油气转化 ,作为岩浆上涌通道的断裂也是油气向上运移通道 ,因此油气纵向分布层位多。因火成岩的屏蔽作用 ,新港地区深部地震资料品质差 ,构造畸变严重 ,应采用变速成图。图 4表 2参 2 1
Interior rift basins are one of the very important petroliferous basins. Based on the analyses of origins, structural style and sedimentary systems of rift basins and the differences of oil accumulation formation between the active and passive rift-type petroleum systems, active rift-basins are characterized by the gentle boundary fault, high sedimentation rate, more volcanic activities, and high thermal gradient. The multi-phase thermal perturbation caused several secondary cycles within the first-order course-fine-course sedimentary cycle, forming excellent source-reservoir-seal combination. Rollover-anticlines, drape-anticlines and buried-hill traps are the main types of oil accumulations. Oil and gas reserves are mainly located in the syn-rift sequence. Passive rift-basins are featured by the steep boundary fault, low extension rate and sedimentation rate, few volcanic activities, and low thermal gradient. Braided-river sandstones in the post-rift sequence are the main reservoir rocks, and the littoral-shallow lake shale within the newly developed syn-rift sequences act as the regional seal, thus forming an excellent source-reservoir-seal combination. Antithetic fault-block is the main type of oil accumulations where the oil and gas are mainly enriched in post-rift sequence.
Interior rift basins are one of the very important petroliferous basins. Based on the analyses of origins, structural style and sedimentary systems of rift basins and the differences of oil accumulation formation between the active and passive rift-type petroleum systems, active rift-basins are characterized by the gentle boundary fault, high sedimentation rate, more volcanic activities, and high thermal gradient. The multi-phase thermal perturbation caused several secondary cycles within the first-order course-fine-course sedimentary cycle, forming excellent source-reservoir-seal combination. Rollover-anticlines, drape-anticlines and buried-hill traps are the main types of oil accumulations. Oil and gas reserves are mainly located in the syn-rift sequence. Passive rift-basins are featured by the steep boundary fault, low extension rate and sedimentation rate, few volcanic activities, and low thermal gradient. Braided-river sandstones in the post-rift sequence are the main reservoir rocks, and the littoral-shallow lake shale within the newly developed syn-rift sequences act as the regional seal, thus forming an excellent source-reservoir-seal combination. Antithetic fault-block is the main type of oil accumulations where the oil and gas are mainly enriched in post-rift sequence.
引文
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[14] 黄志龙,等.东海盆地丽水凹陷天然气成因类型[J].天然气工业,2003,23(3):2931.
[15] 马杰,高勇,邓荣敬,等.北塘凹陷沙三段储集层评价及有利相带预测[J].石油勘探与开发,1999,26(6):3638.
[16] 邓荣敬,杨桦,鲁凤婷,等.北塘凹陷塘沽油田勘探实践[J].石油勘探与开发,2002,29(2):123126.
[17] 王大锐,张映红.渤海湾油气区火成岩外变质带储集层中碳酸盐胶结物成因研究及意义[J].石油勘探与开发,2001,28(2):4042.
[18] 肖敦清,等.黄骅坳陷火成岩成藏特征研究[J].特种油气藏,2003,10(1):5961.
[19] 刘魁元,康仁华,武恒志,等.罗151井区侵入岩油藏储集层分布及成藏特征[J].石油勘探与开发,2000,27(6):1618.
[20] 崔勇,栾瑞乐,赵澄林.辽河油田欧利坨子地区火山岩储集层特征及有利储集层预测[J].石油勘探与开发,2000,27(5):4749.
[21] 石彦民,肖敦清.黄骅坳陷枣北地区火山岩综合油藏描述[J].石油勘探与开发,2000,27(1):8791.
[2] 漆家福,等.黄骅盆地NW向、近EW向构造及其与油气聚集关系研究[R].天津:大港油田,2003.
[3] 许竣远,等.新港探区构造演化和流体压力特征预测及其含油性关系研究[R].天津:大港油田,1997.
[4] 邓荣敬,柴公权,杨桦,等.北塘凹陷第三系油气藏形成条件与油气分布[J].石油勘探与开发,2001,28(1):2729.
[5] 大港油田科技丛书编委会.第三系石油地质基础—大港油田科技丛书2[M].北京:石油工业出版社,1999.
[6] 肖尚斌,姜在兴,等.火成岩油气藏分类初探[J].石油实验地质,1999,21(4):324327.
[7] 邓荣敬,等.新港探区成藏条件研究与含油评价[R].天津:大港油田,1998.
[8] 王光奇,漆家福,等.歧口凹陷及周缘新生代构造的成因和演化[J].地质科学,2003,38(2):230240.
[9] 金强.裂谷盆地火山活动与油气藏的形成[J].石油大学学报(自然科学版),2001,25(1):2729.
[10] 潘钟祥.石油地质学[M].北京:地质出版社,1987.
[11] 潘伟尔.湘赣中南部地区煤的岩浆热变质作用[J].现代地质,1993,7(3):326337.
[12] 高波,等.深部热流体对油气成藏的影响[J].矿物岩石地球化学通报,2001,20(1):3034.
[13] 万从礼,翟庆龙,等.生油岩与火成岩的相互作用研究初探—有机酸对火成岩的蚀变及过渡金属对有机质演化的催化作用[J].地质地球化学,2001,29(2):4651.
[14] 黄志龙,等.东海盆地丽水凹陷天然气成因类型[J].天然气工业,2003,23(3):2931.
[15] 马杰,高勇,邓荣敬,等.北塘凹陷沙三段储集层评价及有利相带预测[J].石油勘探与开发,1999,26(6):3638.
[16] 邓荣敬,杨桦,鲁凤婷,等.北塘凹陷塘沽油田勘探实践[J].石油勘探与开发,2002,29(2):123126.
[17] 王大锐,张映红.渤海湾油气区火成岩外变质带储集层中碳酸盐胶结物成因研究及意义[J].石油勘探与开发,2001,28(2):4042.
[18] 肖敦清,等.黄骅坳陷火成岩成藏特征研究[J].特种油气藏,2003,10(1):5961.
[19] 刘魁元,康仁华,武恒志,等.罗151井区侵入岩油藏储集层分布及成藏特征[J].石油勘探与开发,2000,27(6):1618.
[20] 崔勇,栾瑞乐,赵澄林.辽河油田欧利坨子地区火山岩储集层特征及有利储集层预测[J].石油勘探与开发,2000,27(5):4749.
[21] 石彦民,肖敦清.黄骅坳陷枣北地区火山岩综合油藏描述[J].石油勘探与开发,2000,27(1):8791.
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