苏北盆地复杂小断块油气成藏特征及地震识别技术
|
摘要
苏北盆地由小型箕状凹陷组成,断层密度高、圈闭面积小、油气贫富不均是其复杂性的主要表现。苏北盆地的成藏特点是:1)成藏时间为始新世晚期;2)生油层单向排烃;3)始新世断陷和古新世坳陷两种沉积体系具不同运聚特点。断陷体系发育小型不连通砂体,油气以断裂为通道垂向运移成藏,分布于深凹并沿断裂纵向多层分布,以构造-岩性复合油气藏为主。坳陷体系发育大型三角洲砂体,油气自生自储、侧向运移活跃,在斜坡、隆起区储集,以构造油气藏为主,成排、成带富集;4)油气富集普遍受源岩成熟度、砂岩物性、断层封闭性等因素控制,上组合受油源通道等因素控制,中、下组合受疏导层、圈闭发育等因素控制。为适应复杂小断块油藏的勘探,发展并完善了一整套地震采集、处理、解释技术。
Subei basin is composed of small half grabens and features in closely-spaced faults,small traps,and homogeneous hydrocarbon abundance.Hydrocarbon pooling in Subei basin has the following characteristics:(1) The Late Eocene is the pooling period;(2) Hydrocarbon expulsion of source rocks is unilateral;(3) The migration and accumulation styles are different in the Eocene fault depression and the Palaeocene depression.The Eocene fault depression has small and isolated sandbodies,where hydrocarbons accumulate through vertical migration along the faults,the pools are distributed in the deep depression and occur vertically in multiple layers along the faults,and are dominated by structural-lithologic reservoirs.While the depression develops large delta sandbodies,hydrocarbon generation and accumulation occurring in the same layer and hydrocarbon migration is active.The pools mainly occur in the slope and uplift zones and are dominated by structural reservoirs.(4) Hydrocarbon enrichment is mainly controlled by source rock maturity,physical properties of sandbodies and sealing of the faults.The upper source-reservoir-cap rock combination is controlled by hydrocarbon migration,and the middle and lower combinations are controlled by the development of carrier beds and traps.To deal with the exploration of small complex fault block reservoirs,a set of technologies concerning seismic acquisition,processing,and interpretation,have been developed and improved.
Subei basin is composed of small half grabens and features in closely-spaced faults,small traps,and homogeneous hydrocarbon abundance.Hydrocarbon pooling in Subei basin has the following characteristics:(1) The Late Eocene is the pooling period;(2) Hydrocarbon expulsion of source rocks is unilateral;(3) The migration and accumulation styles are different in the Eocene fault depression and the Palaeocene depression.The Eocene fault depression has small and isolated sandbodies,where hydrocarbons accumulate through vertical migration along the faults,the pools are distributed in the deep depression and occur vertically in multiple layers along the faults,and are dominated by structural-lithologic reservoirs.While the depression develops large delta sandbodies,hydrocarbon generation and accumulation occurring in the same layer and hydrocarbon migration is active.The pools mainly occur in the slope and uplift zones and are dominated by structural reservoirs.(4) Hydrocarbon enrichment is mainly controlled by source rock maturity,physical properties of sandbodies and sealing of the faults.The upper source-reservoir-cap rock combination is controlled by hydrocarbon migration,and the middle and lower combinations are controlled by the development of carrier beds and traps.To deal with the exploration of small complex fault block reservoirs,a set of technologies concerning seismic acquisition,processing,and interpretation,have been developed and improved.
引文
1杨大荣.苏北盆地复杂断块油气藏的形成和富集规律[J].小型油气藏,1997,2(2):11-15Yang Darong.The formation and accumulation laws of complexfaulted reservoir in Subei basin[J].Small Hydrocarbon Reser-voirs,1997,2(2):11-15
2刘玉瑞,刘启东,杨小兰.苏北盆地走滑断层特征与油气聚集关系[J].石油与天然气地质,2004,25(3):279-293Liu Yurui,Liu Qidong,Yang Xiaolan.Relation between featuresof strike-slip faults and hydrocarbon accumulation in Subei basin[J].Oil&Gas Geology,2004,25(3):279-293
3马力,钱基,穆曰孔,等.苏北-南黄海盆地的构造演化和烃类生成[J].南京大学学报(地球科学),1993,5(2):148-163Ma Li,Qian Ji,Mu Yuekong,et al.Tectonic evolution and ge-nerating hydrocarbons of Subei-South Yellow Sea basin[J].Jour-nal of Nanjing University(Earth Science Edition),1993,5(3):148-163
4陈安定.苏北箕状断陷形成的动力学机制[J].高校地质学报,2001,7(4):408-418Chen Anding.Dynamic mechanism of formation of dustpan subsid-ence,Northern Jiangsu[J].Geological Journal of China Universi-ties,2001,7(4):408-418
5陈安定.苏北第三系盆地、断裂、圈闭形成的力学机制[J].小型油气藏,2003,8(1):1-5Chen Anding.Mechanism of the basin,fracture and trap forma-tion of Tertiary in Subei basin[J].Small Hydrocarbon Reservoirs,2003,8(1):1-5
6陈安定.苏北盆地第三系烃源岩排烃范围及油气运移边界[J].石油与天然气地质,2006,27(5):630-636Chen Anding.Range of hydrocarbon expulsion from the Tertiarysource rocks and hydrocarbon migration boundary in Subei basin[J].Oil&Gas Geology,2006,27(5):630-636
7张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷第三系—上白垩统层序地层格架特征[J].沉积学报,2004,22(3):393-399Zhang Xilin,Zhu Xiaomin,Zhoug Dakang,et al.The characterof sequence framework of Tertiary and Upper Cretaceous in Gaoyousag,Subei basin[J].Acta Sedimentlogica Sinica,2004,22(3):393-399
8陈安定.苏北第三系成熟演化指标与深度关系的3种模式[J].石油实验地质,2003,25(1):58-63Chen Anding.Three models of relationship between the maturityindexes and the depth in the northern Jiangsu Tertiary basin[J].Petroleum Geology&Experiment,2003,25(1):58-63
9张金亮,刘宝,毛凤鸣,等.苏北盆地高邮凹陷北斜坡阜宁组成岩作用及储层特征[J].石油学报,2003,24(2):43-49Zhang Jinliang,Liu Baojun,Mao Fengming,et al.Clastic diage-nesis and reservoir characteristics of Funing formation,north slopeof Gaoyou depression,Subei basin[J].Acta Petrolei Sinica,2003,24(2):43-49
10刘世丽,陈平.金湖凹陷西斜坡油气运移特征及成藏模式[J].小型油气藏,2001,6(1):13-15Liu Shili,Cheng Ping.Oil and gas migration characteristics andreservoir formation mode in west slope of Jinghu sag[J].SmallHydrocarbon Reservoir,2001,6(1):13-15
11邱旭明.苏北盆地断块圈闭分类及油气成藏特征[J].石油与天然气地质,2003,24(4):371-374Qiu Xuming.Classification of fault-block traps and characteristicsof petroleum reservoiring in Subei basin[J].Oil&Gas Geology,2003,24(4):371-374
12邱旭明.扭动作用在苏北盆地构造体系中的表现及其意义[J].江汉石油学院学报,2002,24(2):5-7Qiu Xuming.Representation of torsional action in tectonic systemof Subei basin and its significance[J].Journal of Jianghan Petro-leum Institute,2002,24(2):5-7
13毛凤鸣,戴靖.复杂小断块石油勘探开发技术[M].北京:中国石化出版社,2005.194-380Mao Fengming,Dai Jing.Oil exploration techniques of complexsmall fault block[M].Beijing:China Petrochemical Press,2005.194-380
2刘玉瑞,刘启东,杨小兰.苏北盆地走滑断层特征与油气聚集关系[J].石油与天然气地质,2004,25(3):279-293Liu Yurui,Liu Qidong,Yang Xiaolan.Relation between featuresof strike-slip faults and hydrocarbon accumulation in Subei basin[J].Oil&Gas Geology,2004,25(3):279-293
3马力,钱基,穆曰孔,等.苏北-南黄海盆地的构造演化和烃类生成[J].南京大学学报(地球科学),1993,5(2):148-163Ma Li,Qian Ji,Mu Yuekong,et al.Tectonic evolution and ge-nerating hydrocarbons of Subei-South Yellow Sea basin[J].Jour-nal of Nanjing University(Earth Science Edition),1993,5(3):148-163
4陈安定.苏北箕状断陷形成的动力学机制[J].高校地质学报,2001,7(4):408-418Chen Anding.Dynamic mechanism of formation of dustpan subsid-ence,Northern Jiangsu[J].Geological Journal of China Universi-ties,2001,7(4):408-418
5陈安定.苏北第三系盆地、断裂、圈闭形成的力学机制[J].小型油气藏,2003,8(1):1-5Chen Anding.Mechanism of the basin,fracture and trap forma-tion of Tertiary in Subei basin[J].Small Hydrocarbon Reservoirs,2003,8(1):1-5
6陈安定.苏北盆地第三系烃源岩排烃范围及油气运移边界[J].石油与天然气地质,2006,27(5):630-636Chen Anding.Range of hydrocarbon expulsion from the Tertiarysource rocks and hydrocarbon migration boundary in Subei basin[J].Oil&Gas Geology,2006,27(5):630-636
7张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷第三系—上白垩统层序地层格架特征[J].沉积学报,2004,22(3):393-399Zhang Xilin,Zhu Xiaomin,Zhoug Dakang,et al.The characterof sequence framework of Tertiary and Upper Cretaceous in Gaoyousag,Subei basin[J].Acta Sedimentlogica Sinica,2004,22(3):393-399
8陈安定.苏北第三系成熟演化指标与深度关系的3种模式[J].石油实验地质,2003,25(1):58-63Chen Anding.Three models of relationship between the maturityindexes and the depth in the northern Jiangsu Tertiary basin[J].Petroleum Geology&Experiment,2003,25(1):58-63
9张金亮,刘宝,毛凤鸣,等.苏北盆地高邮凹陷北斜坡阜宁组成岩作用及储层特征[J].石油学报,2003,24(2):43-49Zhang Jinliang,Liu Baojun,Mao Fengming,et al.Clastic diage-nesis and reservoir characteristics of Funing formation,north slopeof Gaoyou depression,Subei basin[J].Acta Petrolei Sinica,2003,24(2):43-49
10刘世丽,陈平.金湖凹陷西斜坡油气运移特征及成藏模式[J].小型油气藏,2001,6(1):13-15Liu Shili,Cheng Ping.Oil and gas migration characteristics andreservoir formation mode in west slope of Jinghu sag[J].SmallHydrocarbon Reservoir,2001,6(1):13-15
11邱旭明.苏北盆地断块圈闭分类及油气成藏特征[J].石油与天然气地质,2003,24(4):371-374Qiu Xuming.Classification of fault-block traps and characteristicsof petroleum reservoiring in Subei basin[J].Oil&Gas Geology,2003,24(4):371-374
12邱旭明.扭动作用在苏北盆地构造体系中的表现及其意义[J].江汉石油学院学报,2002,24(2):5-7Qiu Xuming.Representation of torsional action in tectonic systemof Subei basin and its significance[J].Journal of Jianghan Petro-leum Institute,2002,24(2):5-7
13毛凤鸣,戴靖.复杂小断块石油勘探开发技术[M].北京:中国石化出版社,2005.194-380Mao Fengming,Dai Jing.Oil exploration techniques of complexsmall fault block[M].Beijing:China Petrochemical Press,2005.194-380
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心