吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (2): 610-616.doi: 10.13278/j.cnki.jjuese.201602305

• 地球探测与信息技术 • 上一篇    下一篇

用试井资料研究低渗透裂缝性油藏渗流模式及演化特征——以准噶尔盆地火烧山油田为例

刘仁强1, 段永刚2, 谭锋奇3, 刘红现4, 屈怀林5   

  1. 1. 西南石油大学地球科学与技术学院, 成都 610500;
    2. 西南石油大学石油与天然气工程学院, 成都 610500;
    3. 中国科学院计算地球动力学重点实验室, 北京 100049;
    4. 克拉玛依职业技术学院, 新疆克拉玛依 834000;
    5. 新疆油田公司勘探开发研究院, 新疆克拉玛依 834000
  • 收稿日期:2015-05-25 发布日期:2016-03-26
  • 作者简介:刘仁强(1973-),男,博士研究生,主要从事油气田开发方面的研究,E-mail:liurqjereh@126.com
  • 基金资助:

    国家重大科技专项(2011ZX05026-001-07)

Research on Flow Patterns and Evolution Characteristics of Low Permeable Fractured Reservoir Based on Well Test Data: A Case from Huoshaoshan Oilfield in Junggar Basin

Liu Renqiang1, Duan Yonggang2, Tan Fengqi3, Liu Hongxian4, Qu Huailin5   

  1. 1. School of Geoscience and Technology, Southwest Petroleum University, Chengdou 610500, China;
    2. School of Petroleum Engineering, Southwest Petroleum University, Chengdou 610500, China;
    3. Key Laboratory Computational Geodynamics, CAS, Beijing 100049, China;
    4. Karamay Vocational & Technical College, Karamay 834000, Xinjiang, China;
    5. Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China
  • Received:2015-05-25 Published:2016-03-26
  • Supported by:

    Supported by National Science and Technology Major Project of the Ministry of Science and Technology of China (2011ZX05026-001-07)

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摘要：

对于注水开发多年,尤其是多次采取增产增注措施后的油藏,如何准确地判定低渗透非均质储集层渗流特征及其演化规律,难度比较大。针对火烧山低渗透裂缝性油藏,根据不稳定试井曲线识别储层模型,分析了不同开发阶段储层渗流系统的演化规律。由于火烧山油田天然裂缝发育,而且多数井采用压裂方式进行投产,开发初期储层模型主要表现为人工裂缝或双孔模型。开发过程中,随着地层压力的降低及调剖堵水措施的实施,油井渗流特征往单孔模型转变、注水井渗流系统向径向复合模型转变;渗流系统的演化改变了储层的有效渗透率,使其整体上呈现降低的趋势。储层初期有效渗透率场与油井水窜特征基本吻合,有效渗透率的逐步下降与油藏含水上升速度的下降基本吻合,从而为油藏下一步开发调整可行性评价提供了重要依据。

关键词: 不稳定试井, 裂缝性油藏, 渗流模式, 演化特征, 有效渗透率, 火烧山油田

Abstract:

It is still very difficult to determine the seepage characteristics and evolution pattern of a low permeable heterogeneous reservoir after many years' development by water injection, especially those reservoirs that have been dealt with by many different methods to increase their productivity. In this paper, the reservoir models of the low permeable fractured reservoirs in Huoshaoshan oilfield are identified, and the evolution patterns of the reservoir flow systems in different development stages are also analyzed. There are many natural fractures in Huoshaoshan oilfield, and a lots of them are developed by use of fracturing mode;therefore the reservoir models in initial development are mainly manufacturing fractures or dual pore model. During development, the flow characteristics of production well change to single pore model and the flow characteristics of injection well change to radial fitting model caused by decreasing of formation pressure and the application of deep profile control technology. The evolution of flow systems changes the effective permeability of reservoir, and makes it decrease gradully over the whole process. The initial reservoir effective permeability field fits to water channeling characteristics of oil well, and the decreasing tendency of the effective permeability also fits to the decrease of rising rate of water in the research area. The above results provide important bases for further adjustment and development to the feasibility of reservoir evaluation.

Key words: transient well testing, fractured reservoir, flow patterns, evolution characteristic, effective permeability, Huoshaoshan oilfield

中图分类号: 

  • P631.8

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