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松辽盆地华字井阶地泉头组四段短期基准面旋回与储层成因
引用本文:刘自亮,沈芳,段文标.松辽盆地华字井阶地泉头组四段短期基准面旋回与储层成因[J].兰州大学学报(自然科学版),2009,45(5).
作者姓名:刘自亮  沈芳  段文标
作者单位:1. 中国石油大学(北京)油气资源与探测国家重点实验室,北京,102249;中国石油大学(北京)资源与信息学院,北京,102249
2. 中国地质大学(北京)地球科学与资源学院,北京,100083
3. 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院,西安,710021
基金项目:国家重点基础研究发展计划(973计划)项 
摘    要:以松辽盆地华字井阶地白垩系泉头组第四段为例,运用高分辨率层序地层学的短期基准面旋回原理,分析了以水下分流河道和河口坝沉积为主导的三角洲前缘储集砂体的成因.研究表明各种成因砂体的发育受沉积基准面升降、可容纳空间增加与沉积物补给通量比值变化的控制.在基准面上升过程中,A/S<1时,多期叠加型和废弃型河道砂体为主,A/S>1时,则为完整型河道砂体;在基准面下降过程中,A/S<1时,以完整型河口坝砂体为主,A/S>1时,则以叠加型河口坝为主.讨论了各种成因砂体在高分辨率层序地层学格架内的时空分布规律.

关 键 词:基准面  层序地层  分流河道  泉头组  松辽盆地

Short-term base-level cycle and genetic analysis of reservoirs of the 4th member of Quantou formation in Huazijing bench, southern Songliao Basin, China
LIU Zi-liang,SHEN Fang,DUAN Wen-biao.Short-term base-level cycle and genetic analysis of reservoirs of the 4th member of Quantou formation in Huazijing bench, southern Songliao Basin, China[J].Journal of Lanzhou University(Natural Science),2009,45(5).
Authors:LIU Zi-liang  SHEN Fang  DUAN Wen-biao
Abstract:Taking the Quantou formation of cretaceous system in Huazijing bench in Songliao Basin as example and by using the short-term base-level cycle theory of high resolution sequence stratigraphy, the paper studied the variety of origin of reservoir rocks in delta front depositional system that is dominated by the distributary channel and mouth bar. The research indicates that base-level, accommodation and the sediment supply flux have controlled the growth of each kind of genetic sand-body. In the course of base-level rising, A/S <1, the sandstone genetic type is mainly of an abandoned type and of multi-phase overprint channel sandstone body. When A/S >1, sandstone genetic type is mainly of the integrity type channel sandstone body. In the course of base-level droping, A/S <1, the sandstone genetic type is mainly of complete mouth bar sandstone body. When A/S >1, the sandstone genetic type is mainly of stack-mouth bar sandstone body. On the basis of the above, this paper also discussed the distribution model of the different origin associations in delta front in high-resolution sequence stratigraphic frameworks.
Keywords:base level  sequence stratigraphy  channel  Quantou formation  Songliao Basin
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