石油学报 ›› 2007, Vol. 28 ›› Issue (4): 81-85.DOI: 10.7623/syxb200704016

• 油田开发 • 上一篇    下一篇

河流相建筑结构随机建模与剩余油分布研究

林博1, 戴俊生1, 冀国盛1, 黄文科1, 郭振海2   

  1. 1. 中国石油大学地球资源与信息学院 山东东营257061;
    2. 胜利油田有限公司胜利采油厂 山东东营257051
  • 收稿日期:2006-09-29 修回日期:2006-11-06 出版日期:2007-07-25 发布日期:2010-05-21
  • 作者简介:林博,男,1978年5月生,2004年获中国石油大学(华东)油气田开发工程专业硕士学位,现为中国石油大学(华东)在读博士研究生,主要从事地质资源与地质工程方面的研究工作.E-mail:linbosally@yahoo.com.cn
  • 基金资助:
    国家“十五”重点科技攻关项目(2003BA613A-02)“大中型油田勘探开发关键技术研究”资助

Study on stochastic modeling of architectural element and remaining oil distribution in fluvial facies reservoir

Lin Bo1, Dai Junsheng1, Ji Guosheng1, Huang Wenke1, Guo Zhenhai2   

  1. 1. Faculty of Geo-resources and Information, China University of Petroleum, Dongying 257061, China;
    2. Shengli Oil Production Plant, Shengli Oilfield Company, Ltd., Dongying 257051, China
  • Received:2006-09-29 Revised:2006-11-06 Online:2007-07-25 Published:2010-05-21

摘要: 以胜坨油田二区沙二段34层为例,对河流相建筑结构空间分布进行了随机建模,研究了剩余油分布规律。对7口取心井进行了观察和分析,利用密井网条件下组合测井资料,综合考虑岩性、沉积特征、电性特征等因素,共划分出9种岩相类型、7级界面和7种结构单元。应用优选序贯指示模拟方法,建立了结构单元三维空间分布模型。检验结果表明,该模型具有较高的准确性。用该模型确定了结构单元,河道充填沉积和心滩为63.1%,天然堤为10.6%,决口扇为8.9%,洪泛平原细粒为8.1%,河道滞留沉积和落淤层分别为4.9%和4.4%。对各个结构单元和多个结构单元组合进行分析及与剩余油饱和度模型进行叠合分析发现,4个井区的剩余油饱和度均在50%以上,具有较大的增产潜力。

关键词: 胜坨油田, 河流相, 结构单元, 空间分布模型, 剩余油分布, 随机模拟

Abstract: Taking the No.34 layer in the second member of Shahejie Formation in Shengtuo Oilfield as an example,the stochastic modeling for spatial distribution of fluvial facies architecture was studied to investigate the remaining oil distribution rules.Seven coring holes were analyzed.Considering many factors such as lithology,sediment feature and electrical feature,nine lithofacies types,seven rank interfaces and seven architectural elements were established by lots of log data.A 3D distribution model for architectural element was developed with the sequential indicator simulation method.The model analysis revealed that the rate of channel charge and channel bar reached 63.1%.The natural levee accounted for 10.6%,and the crevasse splay,floodplain fine grain,channel lag deposit and interlayer accounted for 8.9%,8.1%,4.9% and 4.4%,respectively. Taking architectural element and remaining oil saturation model into a comprehensive element,the remaining oil was forecasted.Then,the same method was used for remaining oil distribution study of multi-architectural-elements combination.The remaining oil saturations of four blocks are above 50%.These areas would have rich remaining oil.

Key words: Shengtuo Oilfield, fluvial facies, architectural element analysis, spatial distribution model, remaining oil distribution, stochastic modeling

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