王府凹陷扶余油层的高分辨率层序地层及沉积特征研究  

HIGH-RESOLUTION SEQUENCE STRATIGRAPHY AND SEDIMENTARY CHARACTERISTICS OF THE FUYU OIL-BEARIN LAYERS IN THE WANGFU DEPRESSION

作　　者：陈方文[1,2] 卢双舫[1,2] 刘绍军[3] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]东北石油大学油气藏形成机理与资源评价省重点实验室,黑龙江大庆163318 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《地层学杂志》2011年第4期368-374,共7页Journal of Stratigraphy

基　　金：国家自然科学基金(No.41002044);教育部新世纪优秀人才支持计划基金(NCET-04-0345)共同资助

摘　　要：王府凹陷扶余油层河道砂体发育,地层等时划分对比存在较大难度。以高分辨率层序地层学原理为指导,依据岩心、录井和测井等资料对王府凹陷扶余油层各级次基准面旋回进行划分、对比和沉积特征分析,将其划分为2个中期（MSC1、MSC2）、6个短期（SSC1~SSC6）和17个超短期基准面旋回（FIII5~FI1）,并建立层序地层对比格架。MSC1包括基准面快速下降和缓慢下降两个阶段,分别对应扶三组和扶二组;MSC2表现为缓慢上升,对应于扶一组。中期、短期旋回在王府凹陷扶余油层稳定发育,在中期旋回的转换面附近中期基准面下降到最底点,河道砂体非常发育;研究区扶余油层以三角洲平原沉积环境为主,在顶部过渡为三角洲前缘。Channel sands of the Fuyu Formation in the Wangfu Depression is well developed,but their correlation is difficult.Base on high-resolution sequence stratigraphy using core data,well logs,logging curves,the base-level cycles and the sedimentary characteristics of the Fuyu Formation in the Wangfu Depression were analyzed.The Fuyu Formation includes 2 middle-term cyclic sequences（msc1,msc2）,6 short-term cyclic sequences（ssc1-ssc6） and 17 super-short-term cyclic sequences（fiii5-fi1）.Our results indicate that msc1 includes a rapid base-level fall followed by a slow base-level fall,corresponding to the f3-subsection and f2-subsection respectively.Msc2 represents slow base-level rise and corresponds to the f1-subsecion.Middle-term and short-term cyclic sequences of the Fuyu Formation in the Wangfu Depression are regionally stable.Near the transitional surface between the middle-term cyclic sequences the base-level fell to the nadir,where promoted the deposition of channel sands.The sedimentary environment of the Fuyu Formation in the study area was mainly delta plain but switched to delta front at the top of the formation..

关 键 词：高分辨率层序地层学 沉积特征 扶余油层 白垩系 王府凹陷 松辽盆地 

分 类 号：P539.2[天文地球—古生物学与地层学]