西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (5): 49-55.DOI: 10.3863/j.issn.1674-5086.2009.05.011

• 地质勘探 • 上一篇    下一篇

英台地区储层内部毫米级泥膜对开发的影响

王永卓1,2 郭洪岩3 陈国勋2 王海侨2   

  1. 1.中国地质大学地球物理与信息技术学院,北京海淀100083;2.中国石油大庆油田有限责任公司油藏评价部,黑龙江大庆163453;3.中国石油大庆油田有限责任公司采气分公司,黑龙江大庆163514
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-20 发布日期:2009-10-20

EFFECTS OF MM-LEVEL MUD-FILMS ON RESERVOIR DEVELOPMENT IN YINGTAI AREA

WANG Yong-zhuo1,2 GUO Hong-yan3 CHEN Guo-xun2 WANG Hai-qiao2   

  1. 1.School of Geophysics and Information Technology,China University of Geosciences,Haidian Beijing 100083,China;2.Oil Reservoir Evaluation Department,Daqing Oilfield Company Limited,CNPC,Daqing Heilongjiang 163453,China;3.Gas Production Branch,Daqing Oilfield Company Limited,CNPC,Daqing Heilongjiang 163514,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-20 Published:2009-10-20

摘要: 大庆油田西部英台地区白垩系三角洲前缘粉砂岩储层中发育大量毫米级泥质薄层——泥膜,厚度在3mm以内。泥膜主要发育在三角洲前缘席状砂环境中,河口坝次之,水下分流河道中最少。根据岩芯观察统计,英台地区席状砂储层中的泥膜最大发育频率可以达到48条/米,频繁发育的泥膜在开发时能够改变砂岩内部的油水运移路线,间接起到了降低砂岩孔渗特征的作用。通过对同一个油藏模型在发育和不发育泥膜两种情况下开发特征进行数值模拟的结果对比,定量确定了泥膜的存在对含水率、采出程度和开发周期的影响,并对英台地区的泥膜发育情况提出了针对性的开发应对措施。

关键词: 毫米级泥膜, 阻隔, 非均质性, 数值模拟, 大庆

Abstract:

There are abundant mm-level mud films in the cretaceous delta front silts in Yingtai area which is located in west of Daqing,with the thickness less than 3mm.The mud films are mainly developed in the sand sheet of delta front,secondly of mouth bar,and least in the under-water distributary channel.The frequency of the mud films in sand sheet is up to 40n/m by cores counting.Mud films can change the route of the oil-water migration in reservoirs and take effects of decreasing porosity and permeability indirectly.A work of exploitation numeral simulation by two models is considered,one is homogeneous and another is developed some mud films.The affections of mud film are quantitatively conformed by the contrast of two simulate results,and so some exploitation measures are brought for the reservoirs which contain some mud films in Yingtai area.

Key words: mm-level mud film, orifice, heterogeneity, numeral simulation, Daqing

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