冲积扇高分辨率层序地层分析——以辽河坳陷曙一区杜84块SAGD开发区馆陶组为例  

High-resolution sequence stratigraphy of alluvial fan:a case from Guantao Formation in SAGD development zone of Du 84 block,Shuyi area,Liaohe Depression

作　　者：李晨[1] 樊太亮[1] 高志前[1] 钱小会 傅巍[3] LI Chen;FAN Tailiang;GAO Zhiqian;QIAO Xiaohui;FU Wei(School of Energy Resources,China University of Geosciences,Beijing 100083,China;No. 3 Oil Production Plant,PetroChina Daqing Oilfield Company Ltd.,Daqing 163000,Heilongjiang,China;Research Institute of Exploration and Development,PetroChina Liaohe Oilfield Company,Panjin 124010,Liaoning,China)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油大庆油田有限责任公司采油三厂,黑龙江大庆163000 [3]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《岩性油气藏》2017年第3期66-75,共10页Lithologic Reservoirs

基　　金：国家自然科学基金项目"二次运移途中油气损失量估算方法研究与应用"(编号:41102078)资助

摘　　要：为指导SAGD开发区油气开发及认识剩余油分布规律,应用高分辨率层序地层学方法,综合岩心、测井及地震资料,研究了辽河坳陷曙一区杜84块SAGD开发区馆陶组冲积扇储层层序分布模式。结果表明:馆陶组地层可划分为1个长期旋回,4个中期旋回及10个短期旋回,其中短期旋回按可容纳空间大小可划分为Ⅰ,Ⅱ,Ⅲ,Ⅳ和Ⅴ型;以中期旋回为等时单元,垂向上等时单元内形成的短期旋回类型与其在中期旋回中的位置有关,而中期旋回的保存程度又取决于其在长期旋回中的位置,侧向上等时单元内形成的短期旋回的可容纳空间顺物源方向逐渐增大。杜84块SAGD开发区馆陶组短期旋回类型与储层物性存在对应关系,较优的储层位置多处于中期基准面上升早中期的冲积扇扇根与扇中交界处或扇中前缘。In order to recognize the distribution of remaining oil and guide the oil development in SAGD(SteamAssisted Gravity Drainage)development zone,the data of core,well logs and seismic were applied to study thestratigraphic sequence model of Guantao Formation in SAGD development zone of Du84block,Shuyi area,LiaoheDepression.The results show that Guantao Formation could be divided into one long-term sequence cycle(LSC),four middle-term sequence cycles(MSC)and ten short-term sequence cycles(SSC).Based on accommodationchanges,SSC types include typeⅠ,Ⅱ,Ⅲ,ⅣandⅤ.Based on MSC isochronous unit,verticallySSC type is related to its position in MSC.The preserve degree of MSC is controlled by its position in LSC,and MSC formed in the ascending hemicycle of LSC can preserve more different SSC types.In a single MSC,the accommodationof SSC would gradually increase along source direction.The SSC type in Guantao Formation is relatedto the reservoir physical properties.The position of high quality reservoir is located in the border betweenroot-fan and middle-fan or in the intra-middle-fan,and this position is always formed in the early or middle stagein the ascending hemicycle of MSC.

关 键 词：高分辨率层序地层学 基准面 冲积扇 馆陶组 辽河坳陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]