扇三角洲前缘储层构型表征——以辽河西部凹陷于楼为例CONFIGURATION CHARACTERIZATION OF THE FAN-DELTA-FRONT RESERVOIRS-TAKING YULOU OIL LAYERS IN WEST LIAOHE SAG AS A CASE
王珏,陈欢庆,周俊杰,周新茂,杜宜静
WANG Jue,CHEN Huanqing,ZHOU Junjie,ZHOU Xinmao,DU Yijing
摘要(Abstract):
为了更深入认识储层空间展布及剩余油的分布规律,应用岩心、录井及测井资料,通过识别不同级次的构型界面,对辽河西部凹陷A区块于楼油层的储层构型进行了精细刻画,总结了单砂体在侧向、垂向及平面上的构型模式。研究认为:单砂体侧向可分为孤立型、对接型、切叠型3种构型模式,可进一步划分为水下分流河道、河口砂坝、水下分流河道间砂、水下分流河道间泥及前缘席状砂等5种四级构型要素;单砂体垂向构型可分为削截式水下分流河道、完整式水下分流河道、孤立式河口砂坝、多期叠加式河口砂坝、水下分流河道与河口砂坝的叠置等5种模式;单砂体的平面组合可分为孤立条带状河道、交织条带状河道、连片状河道等3种模式;正韵律层为蒸汽驱的优选层段、平面上呈孤立条带状的层段,可以考虑分层注气;部署注气井和采油井时,应优选连通性较好的构型结构内部。
In order to deeply understand the distribution laws of the reservoir special spread and remained oil,with the help of the core,mud logging and well logging data and moreover through the recognition of the configuration interfaces with different scales,the fine characterization is conducted for Yulou oil reservoirs in Block of West Liaohe Sag,the lateral,vertical and planar configuration modes are summarized for the individual sandbodies. The researches show that the individual sandbodies can be classified laterally into three modes: isolated,strapped and cutand-stack types,and furthermore they can be divided into the following five four-grade configuration elements: underwater distributary channel,river mouth bar,underwater distributary inter-channel sand,underwater distributary inter-channel mud and sheet sand; for the vertical,the sandbodies can be classified into five modes: truncated un-derwater distributary channel,complete underwater distributary channel,isolated river mouth bar,multi-period stacked river mouth bar,superimposed form by the underwater distributary channel and river mouth bar; the planar combination among the individual sandbodies can be divided into three modes: isolated stripped river,interlacedstripped channel and large-spread channel; the layers with positive rhythm are the optimized intervals for the steam driving,the intervals with the isolated and stripped mode in horizon can be considered into gas injection layer by layer; when arranging these injectors and oil producers,the inner parts of the configuration structures with much better connectivity should be optimized.
关键词(KeyWords):
扇三角洲前缘;储层构型;构型界面识别;构型模式;储层非均质性
fan-delta front;reservoir configuration/architecture;configuration interface/boundary identification;configuration mode;reservoir heterogeneity
基金项目(Foundation): 国家科技重大专项“井震结合油藏精细结构表征技术”(2011ZX05010-001)资助
作者(Author):
王珏,陈欢庆,周俊杰,周新茂,杜宜静
WANG Jue,CHEN Huanqing,ZHOU Junjie,ZHOU Xinmao,DU Yijing
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- 扇三角洲前缘
- 储层构型
- 构型界面识别
- 构型模式
- 储层非均质性
fan-delta front - reservoir configuration/architecture
- configuration interface/boundary identification
- configuration mode
- reservoir heterogeneity