石油与天然气地质 ›› 2013, Vol. 34 ›› Issue (6): 809-815.doi: 10.11743/ogg20130614

• 油气开发 • 上一篇    下一篇

基于精细地质模型的大型压裂裂缝参数优化

苟波, 郭建春   

  1. 西南石油大学 油气藏地质及开发工程国家重点实验室, 四川 成都 610500
  • 收稿日期:2012-09-17 修回日期:2013-10-21 出版日期:2013-12-08 发布日期:2014-01-04
  • 作者简介:苟波,(1984- ),男,博士研究生,油气田增产理论与技术。E-mail:gouboyouxiang@163.com。
  • 基金资助:
    国家科技重大专项(2011ZX05006-002);四川省青年科技创新研究团队资助计划项目(2011JTD0018)。

Fracture parameter optimization of large hydraulic fracturing based on the fine geological model

Gou Bo, Guo Jianchun   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2012-09-17 Revised:2013-10-21 Online:2013-12-08 Published:2014-01-04

摘要: 以Z23北区特低渗透油藏为例,基于Petrel软件建立的储层精细地质模型分析了控制工区压裂效果的关键地质因素。根据控制压裂效果的地质因素(油层厚度、渗透率),将改造目的层一砂组、二砂组和三砂组各分为4类储层。以储层精细地质模型为基础,采用数值模拟方法和经济净现值法优选了8类储层的大型压裂裂缝参数。裂缝参数优选结果表明:对于非均质性强的储层,与储层相匹配的裂缝参数差异较大;要获得理想产能,低渗透储层需要造长缝,而渗透率相对较高的储层需要高导流能力裂缝。现场应用实践表明:按照此方法优选的裂缝参数压裂效果好,储层改造针对性强,可以推广。

关键词: 大型压裂, 裂缝参数优化, 经济净现值, 储层精细地质模型, 低渗透油藏

Abstract: The key geological factors determining fracturing effect in north Z23 ultra-low permeability reservoir are analyzed based on the fine geological model of reservoir established by using the Petrel software.According to the key geolo-gical factors(reservoir thickness,permeability),the target layers of sand unit 1,2 and 3 are classified into four types.Fracturing parameters of eight reservoir types are optimized by using numerical simulation and ENPV methods based on the fine geological model.The results show that the fracturing parameters vary greatly for reservoirs with intense heterogeneity.To obtain ideal productivity,long fractures are needed for the low permeability reservoir,while fractures with high flow conductivity is needed in reservoirs with relative high permeability.Field test shows that the hydraulic fracturing with fracture parameters optimized by using this method is effective.

Key words: large hydraulic fracturing, fracture parameter optimization, ENPV, fine geological model of reservoirs, ultra-low permeability reservoir

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