/ m 20 m ~ 8.4 m 23.5 ~ 25.1 m ~ km km ~ 9 m m B 2 Kl6-A 1 GR GR Fig.1 Location and str

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1 ACTA SEDIMENTOLOGICA SINICA Vol.32 No. 2 Apr zxt198108@ 163.com TE122.2 TE121.3 A Fisk 1 Postma 17~ ~ 7 Bryan et al. 8 Nichols 9 9~ 12 13~ S ZX

2 / m 20 m ~ 8.4 m 23.5 ~ 25.1 m ~ km km ~ 9 m m B 2 Kl6-A 1 GR GR Fig.1 Location and structural map of Huanghekou sag 1.2 GR GR 体系域划分

3 Fig.2 2 KL6-A Squence stratigraphy of Well KL6-A in the low segment of Minghuazhen Formation 体系域特征 LST TST HST 3 GR 3 ~ 4

2 263 Fig.3 3 Seismic character of the low segment of Minghuazhen Formation TST HST 4 0.30 ~ 0.

4 2 263 Fig.3 3 Seismic character of the low segment of Minghuazhen Formation TST HST ~ ~ 200 m 500 ~ 600 m 50 km Fraltle work model m 0.20 ~ 0.30 LST 0.15 ~ 0.2

5 Fig.4 4 Sand body architecture of shallow water delta in low segment of Minghuazhen Formation 3 Fisk Fig.5 Sedimentary sequence of shallow water delta in 29 lower Minghuazhen Formation in Huanghekou sag 3.2 5

Minghuazhen Formation 7 8 4 LST 6 ~ 10m 1 Fig.

6 ~ Fig.6 Sedimentary facies of in LST of low segment of Minghuazhen Formation LST 6 ~ 10m 1 Fig.7 7 Sendimentary model of river and shallow water delta in low segment of Minghuazhen Formation

7 Fig.8 8 Sequence stratigraphy model of low segment of Minghuazhen Formation in Huanghekou sag TST 3 ~ 4 Google Earth HST Laptev 9 4 9A 9B 10A TST + HST 8 ~ 12 m 10B

2 267 Fig.9 9 A B Remote sensing image sedimentary environment change from dry season A to flood period B in Poyang Lake Fig.10 10 A. B. Sedimentary characteristics of experimental simulation A.

AAPG 45th Annual Meeting 1961 29-52 2 Postma G. An analysis of the variation in delta architecture J. Terra Nova 1990 2 2 124-130 3 Ganil M R Bhattacharya J P.

8 2 267 Fig.9 9 A B Remote sensing image sedimentary environment change from dry season A to flood period B in Poyang Lake Fig A. B. Sedimentary characteristics of experimental simulation A. Lake level fall B. The rise of lake level References Fisk H N. Bar-finger sands of the Mississippi delta in Geometry of Sandstone Bodies C. AAPG 45th Annual Meeting Postma G. An analysis of the variation in delta architecture J. Terra Nova Ganil M R Bhattacharya J P. Basic building blocks and process variability of a Cretaceous delta internal Facies architecture reveals a more dynamic interaction of river wave and tidal processes than is indicated by external shape J. Journal of Sedimentary Research Hoy R G Ridgway K D. Sedimentology and sequence stratigraphy of fan-delta and river-delta deposystems Pennsylvanian Minturn Forma-

9 tion Colorado J. AAPG Bulletin Keumsuk L l McMechan G A Gani M Ro et al. 3-D architecture and sequence stratigraphic evolution of a forced regressive top-truncated mixed-influenced delta Cretaceous Wall Creek sandstone Wyoming U. S. A. J. Journal of Sedimentary Research BZ34 J Chen Bin Deng Yunhua Hao Fang et al. Late-stage rapid petroleum accumulation 6 Lemons D R Chan M A. Facies architecture and sequence stratigraphy of fine-grained lacustrine deltas along the eastern margin of late model of BZ34 fault zone in Huanghekou sag J. Acta Petrolei Sinica Pleistocene Lake Bonneville northern Utah and southern Idaho J. AAPG Bulletin J Plint A G. Sequence stratigraphy and paleogeography of a Cenomanian deltaic complex the Dunvegan and lower Kaskapau formations in subsurface and outcrop Alberta and British Columbia Canada J. Bulletin of Canadian Petroleum Geology Zhu Xiuxiang Lü Xiuxiang Wang Deying et al. Controlling effect of a strike slip transform belt Hydrocarbon accumulations in Huanghekou sag the Bohai Sea waters J. Oil & Gas Geology Bryan D Ritchie Rob L et al. Three-dimensional numerical modeling of deltaic depositional sequences2 influence of local controls J. Journal of Sedimentary Research J Sun Hefeng Zhou Xinhuai Peng Wenxu et al. Late-stage hydrocarbon 9 Nichols G J Fisher J A. Processes facies and architecture of fluvial distributary system deposits J. Sedimentary Geology / accumulation and enrichment in the Huanghekou sag southern Bohai Sea J. Petroleum Exploration and Development Busch D A. Prospecting for stratigraphic traps J. AAPG Bulletin M Editing Committee of Petroleum 11 Busch D A. Genetic units in delta prospecting J. AAPG Bulletin Geology of China. Petroleum Geology of China Vo1.16 M. Beijing Petroleum Industry Press Cleaves A W Broussard M C. Chester and Pottsville depositional systems outcrop and subsurface in the Black Warrior Basin of Mississippi and Alabama J. Gulf Coast Association of Geological Societies Transactions John H Robert W S Francisca E O. Base-level buffers and buttresses A model for upstream versus downstream control on fluvial geometry and architecture within sequences J. Journal of Sedimentary Research J. 23. J Zhao Hanqing. Sedimentary model of large scale leaf-shaped delta in Songliao Basin J. Petroleum Geology & Oilfield Development in Daqing Li Yucheng Wang Sumin Huang Yaosheng. The lake sediments responses to environmental and climatic change J. Advance in Earth Sciences J Lou Zhanghua Lu Qingmei Cai Xiyuan et al. Influence of lake level fluctuation on sandbody shapes at shallow water delta front J. Acta Sedimentologica Sinica J Lai Weicheng Zhou Xinhuai Li Jianpin et al. Stratigraphic sequence division and sandbody 15. characteristics of peneplain deposits during lacustrine basin shrinking J Lü Xiaoguang Li Changshan Cai Xiyuan et al. Depositional characteristics and front facies reservoir framework model in Songliao A case study of Lower Member of Neogene Minghuazhen Formation in the area of Yellow River mouth J. China Offshore Oil and Gas shallow lacustrine delta J. Acta Sedimentologica Sinica J Yao Guangqing Ma Zheng Zhao Yanqin et al. Reservoir characteristics of distributary channel sand bodies of shallow water delta J. Acta Petrolei Sinica J Peng Wenxu Sun Hefeng Zhang Rucai et. allate-stage near source preponderant hydrocarbon pooling pattern in the Huanghekou sag of th Bohai sea waters J. Oil & Gas Geology M Guan Xueting Fan Huiping. Song Zhichen et al. Palynology of Late Cenozoic in Bohai Sea Waters M. Najing Najing University Press Vail P R Mitchum R M Thompmn S. Seismic stratigraphy and global changes of sea level Part 5. Chronostratigraphic significance of seismic reflections Section 2. Application of seismic reflection. configuration to stratigraphic interpretation J. AAPG Memoir Van Wagoner J C Mittchum R M Campion K M et al. Sillciclastic

10 2 269 sequence stratigraphy in well logs cores and outcrops concepts for high-resolution correlation of time and facies J. AAPG Methods in Exploration Series Webber K J Van Geuns L C.Framework for constructing clastic reservoir simulation models J. Journal of Petroleum Technology of the modern Brazos Delta Texas wave versus flood influence J. J Zhu Weilin Li Jianping Zhou Xinhuai et al. Neogene shallow water deltaic system and large hydrocarbon accumulations in Bohai Bay China J. Acta Sedimentologica Sinica Zhang Changmin Yin Taiju Zhu Yongjin et al. Shallow water deltas and models J. Acta Sedimentologica Sinica Van I L Roberts H H. Facies development of Atchafalaya Delta Louisiana a modern bayhead delta J. AAPG Bulletin TyeR S Coleman J M. Evolution of Atchafalaya lacustrine deltas southcentral Louisiana J. Sedimentary Geology Rodriguze A B Hamilton M D Aanderson J B. Facies and evolution Journal of Sedimentary Research Bhattacharya J P Wills B J. Lowstand deltas in the Frontier Formation Powder River Basin Wyoming implications for sequence stratigraphic models J. AAPG Bulletin J. 35 Overeem I Kroonenteberg S B Veldkamp A et al. Small-scale stratigraphy in a large ramp delta recent and Holocene sedimentation in the Volga delta Caspian Sea J. Sedimentary Geology / Unconfined Flow Deposits in Front Sandbodies of Shallow Water Deltaic Distributary Systems ZHANG Xin-tao ZHOU Xin-huai LI Jian-ping NIU Cheng-min Development Research Institute of Bohai Oil Field of.tianjin Branch CNOOC Ltd. Tianjin Abstract Bohai Basin is characterized by stable tectonics with steady and slow subsidence which formed in lowrelief and low gradient during the Neogene. The paleoclimate data confirmed that the Bohai area was humid subtropical to warm temperate climate and widely developed shallow-water delta and shallow lake sedimentation system in Middle Neogene sedimentary period of the Lower Member of Minghuazhen Formation. Changes of palaeogeomorphology palaeoclimate and ancient water depth controlled shallow water deltaic distributary systems front sandbodiesis architectures distribution and evolution. Application of the principle of sequence stratigraphy the lower member of Minghuazhen Formation in Huanghekou sag will be divided into one three order sequence and three system tracts which is LST TST and HST. On the basic recognized three kinds of sand body architectures include the stacked channel type isolated channel type sheeted channel type. According to core logging seismic means of modern sediments and tank simulation experiment we established depositional model of Huanghekou sag fluvialdominated delta in the lower member of Minghuazhen Formation. Key words unconfined flow deposits fluild-dominated shallow water deltaic modern sediments flume experiment sedimentary model

ACTA SEDIMENTOLOGICA SINICA Vol. 31 No. 2 Apr

31 2 2013 4 ACTA SEDIMENTOLOGICA SINICA Vol. 31 No. 2 Apr. 2013 1000-0550 2013 02-0340-10 120 8 1 1 2 1 1 1 1. 430074 2. 430074 120 8 8 1 8 1 8 2 8 2 8 3 120 8 1986 E-mail xumeng8610@ 126. com P512. 2