包日温都构造带九佛堂组高分辨率层序结构及储层分析  

HIGH RESOLUTION SEQUENCE STRATIGRAPHY CONFIGURATIONS AND RESERVOIR ANALYSIS OF THE JIUFOTANG FORMATION IN THE BAORIWENDU TECTONIC BELT

作　　者：刘为付[1] 刘双龙[2] 孙立新[2] 于生云[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《地层学杂志》2015年第3期310-318,共9页Journal of Stratigraphy

基　　金：东北石油大学培育基金项目(No.XN2014119);国家自然基金项目(No.U1262106)资助

摘　　要：基于包日温都构造带九佛堂组储层砂体分布认识不清、分层混乱、开发效果不理想的现状,利用高分辨率层序地层理论,综合地震和钻测井资料,对九佛堂组进行了层序基准面旋回结构分析,识别不同级次旋回基准面特征,划分出1个长期、4个中期和10个短期旋回层序,以及2类5种基准面旋回结构类型。提出了九佛堂组为水下冲积扇沉积体系,明确了储层发育及分布规律,储层砂体分布与扇中辫状沟道发育密切相关。建立了不同级别基准面旋回层序结构式样,有利储层发育在基准面上升型向上变深的旋回层序早期和复合型下降半旋回层序晚期,前者主要为辫状沟道沉积所形成厚度大、连通性好的储集砂体,为本区主要储层,后者为辫状沟道边部砂体及辫状沟道间薄层砂,为本区较有利储层。The Jiufotang Formation is the main reservoir of oil and gas in the Baoriwendu tectonic belt. On the basis of an integrated study of seismic and drilling data, the sequence stratigraphy and reservoir charac- teristics of the Jiufotang Formation in the Baoriwendu tectonic belt have been analyzed thoroughly. The re- sults show that the Jiufotang Formation includes one long-term base-level cycle sequence that can be divid- ed into four mid-term and ten short-term sequences, with two categories and five kinds of base-level cycle structures. It is proposed that the oil and gas reservoirs mainly occur in the subaqueous alluvial fan sedi mentary system of the Jiufotang Formation and the distribution of reservoir sand bodies is closely related to the middle fan braided channel development and distribution. Different levels of sequence structure style are analyzed and the reservoir development and distribution are determined. Favorable reservoirs occur in the early rising type of base-level cycle deepening upward and the late composite type of base-level descend- ing half cycle. The former is characterized by thick reservoirs with good connectivity of braided channel sedimentary sand bodies, and the latter is characterized by braided channel edge sand bodies and braided in- ter-channel thin sand bodies.

关 键 词：层序地层 基准面旋回 高分辨率层序 储集层 九佛堂组 白垩系 包日温都构造带 内蒙古 

分 类 号：P539.2[天文地球—古生物学与地层学] P534.53[天文地球—地质学]