中国近海含油气盆地新构造运动与油气成藏

龚再升

中国近海含油气盆地新构造运动与油气成藏

龚再升

中国海洋石油总公司, 北京 100027

基金项目:

国家自然科学基金项目 40238059

国家自然科学基金项目 40125008

详细信息

作者简介:
龚再升(1938-), 男, 总地质师, 主要从事含油气盆地和石油地质综合研究

中图分类号: P618.13;P546
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出版历程
- 收稿日期: 2004-06-12
- 刊出日期: 2004-09-25

Neotectonics and Petroleum Accumulation in Offshore Chinese Basins

GONG Zai-sheng

China National Offshore Oil Corporation, Beijing 100027, China

摘要

摘要: 自中新世末(大约5.2Ma) 至今是中国近海新生代盆地裂后热沉降最活跃的时期, 并伴随着裂后构造再活动.这一期构造运动, 即本文所定义的新构造运动, 调整和控制了各含油气盆地的油气最终成藏和油气田的定型分布.阐述了新构造运动的概念、识别依据、成因机制以及对油气藏形成的控制.在中国近海, 新构造运动的主要表现包括中新统末、上新统与第四系之间及层系内部的不整合、中新世和第四纪沉降、沉积中心的迁移、非常发育的晚期断裂活动及活跃的天然地震等.不同盆地新构造运动的强度、发育机制不同, 其对油气成藏与分布的控制亦不同.以渤海湾盆地渤中坳陷、莺歌海盆地和东海盆地西湖坳陷为例, 系统地论述了中国近海新构造运动对油气藏形成的控制和影响.渤海新构造运动控制了渤中坳陷及其周围油气晚期成藏, 莺歌海盆地底辟活动控制了天然气晚期成藏, 东海西湖坳陷新构造运动部分破坏了油气藏
- 新构造运动 /
- 油气成藏 /
- 近海盆地
Abstract: The Tertiary offshore Chinese basins have been undergoing the most rapid post-rift thermal subsidence since the end of the Miocene (about 5.2 Ma). The thermal subsidence is accompanied by tectonic re-activation. Tectonic movements, i.e. the neotectonics as defined in this paper, modify and control the ultimate petroleum accumulation and distribution in these offshore petroleum-bearing basins. The concept, distinguishing characteristics, genetic mechanism of the neotectonics as well as their controlling role on petroleum accumulation are presented and discussed in this paper. The main manifestations of the neotectonics in the offshore Chinese basins include the formation of unconformities on the end of the Miocene and the Pliocene within the sequences, the shift of sedimentation centers, the strong late-stage fault activities and the active natural earthquakes. The intensity, development mechanism of the neotectonics, and their controls on petroleum accumulation and distribution are quite different in different basins. Some case studies from the Bozhong depression in the Bohai Bay basin, the Yinggehai basin in the South China Sea, and the Xihu depression in the East China Sea basin indicate that the neotectonics plays an important role on late petroleum accumulation in the offshore Chinese basins.
- neotectonics /
- petroleum accumulation /
- offshore basins

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图 1 渤海湾盆地渤中地区明化镇组底面断裂系统分布

Fig. 1. Sketch of fracture system in the bottom of Minghuazhen Formation of Bozhong area, Bohai Bay basin

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图 2 PL19-3油田油气成藏模式

Fig. 2. Petroleum accumulation model for PL19-3 oilfield in Bozhong area

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图 3 莺歌海盆地东方1-1气田天然气组成的层间非均质性(据李绪宣资料修改)

Fig. 3. Inter-reservoir compositional heterogeneities of Dongfang1-1 gas field, Yinggehai basin

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图 4 莺歌海盆地DF1-1-3井超压流体活动引起的砂岩粘土矿物成岩作用异常

Fig. 4. Anomaly of clay mineral diagenesis in sandstones caused by overpressured fluid activities in Well DF1-1-3 in the Yinggehai basin

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参考文献(18)

Duddy, I.R., Green, P.F., Bray, R.J., et al., 1994. Recognition of the thermal effects of fluid flow in sedimentary basins. In: Parnell, J., ed., Geofluids: Origin, migration and evolution of fluids in sedimentary basins. Geological Society Special Publication, 78: 325-345.
Gong, Z.S., Li, S.T., Xie, T.J., 1997. Continental margin basin analysis and hydrocarbon accumulation of the northern South China Sea. Science Press, Beijing, 510(in Chinese).
Gong, Z.S., Wang, G.C., 2001. Neotectonism and late hydrocarbon accumulation in Bohai Sea. Acta Petrolei Sinica, 22 (2): 1-8(in Chinese with English abstract).
Hao, F., Li, S.T., Gong, Z.S., et al., 2000. Thermal regime, inter-reservoir compositional heterogeneities, and reservoir-filling history of the Dongfang gas field, Yinggehai basin, South China Sea: Evidence for episodic fluid injections in overpressured basins? AAPG Bulletin, 84(5): 607-626.
Hao, F., Li, S.T., Sun, Y.C., et al., 1995. Overpressure retardation of organic-matter maturation and hydrocarbon generation: A case study from the Yinggehai and Qiongdongnan basins, offshore South China Sea. AAPG Bulletin, 79: 551-562.
Huang, Z.J., Li, Y.C., 2002. Hydrocarbon source potential of Dongying Formation in Bozhong depression, Bohai Bay basin. China Offshore Oil and Gas(Geology), 16(2): 102-106(in Chinese with English abstract).
Li, T.Y., 2000. Evolution of terrane tectonics in East Asia. Science Development, 28(10): 754-762(in Chinese with English abstract).
Mi, L.J., 2001. The neotectonism and major Neogene oil and gas fields in Bohai Sea. China Offshore Oil and Gas(Geology), 15(1): 21-28(in Chinese with English abstract).
Qiu, Z.J., Gong, Z.S., 1999. Petroleum exploration in China. Geological Publishing House, Petroleum Industry Press, Beijing, 1223(in Chinese).
Yin, X.L., Li, S.T., Yang, J.H., 2003. Digital simulation of structural stress field and flow field in DF1-1 diapir. Earth Science- Journal of China University of Geosciences, 28 (3): 268-275(in Chinese with English abstract).
Ziagos, J.P., Blackwell, D.D., 1986. A model for the transient temperature geothermal system. Journal of Volcanology and Geothermal Research, 27(3): 371-397.
龚再升, 李思田, 谢泰俊, 1997. 南海北部大陆边缘盆地分析与油气聚集. 北京: 科学出版社, 510.
龚再升, 王国纯, 2001. 渤海新构造运动控制油气晚期成藏. 石油学报, 22(2): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB200102000.htm
黄正吉, 李友川, 2002. 渤海湾盆地渤中坳陷东营组烃源岩的烃源前景. 中国海上油气(地质), 16(2): 102-106. https://www.cnki.com.cn/Article/CJFDTOTAL-ZHSD200202010.htm
李通艺, 2000. 东亚地体构造演化的回顾与展望. 科学发展月刊, 28(10): 754-762.
米立军, 2001. 新构造运动与渤海海域新近系大油气田. 中国海上油气(地质), 15(1): 21-28.
邱中建, 龚再升, 1999. 中国油气勘探. 北京: 地质出版社, 石油工业出版社, 1223.
殷秀兰, 李思田, 杨计海, 2003. DF1-1底辟区构造应力场及渗流场演化的数值模拟研究. 地球科学---中国地质大学学报, 28(3): 268-275. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200303005.htm