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裂缝对气藏储层渗透率及气井产能的贡献

梅丹 胡勇 王倩

梅丹, 胡勇, 王倩. 裂缝对气藏储层渗透率及气井产能的贡献[J]. 石油实验地质, 2019, 41(5): 769-772. doi: 10.11781/sysydz201905769
引用本文: 梅丹, 胡勇, 王倩. 裂缝对气藏储层渗透率及气井产能的贡献[J]. 石油实验地质, 2019, 41(5): 769-772. doi: 10.11781/sysydz201905769
MEI Dan, HU Yong, WANG Qian. Experimental study on fracture contribution to gas reservoir permeability and well capacity[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(5): 769-772. doi: 10.11781/sysydz201905769
Citation: MEI Dan, HU Yong, WANG Qian. Experimental study on fracture contribution to gas reservoir permeability and well capacity[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(5): 769-772. doi: 10.11781/sysydz201905769

裂缝对气藏储层渗透率及气井产能的贡献

doi: 10.11781/sysydz201905769
基金项目: 

国家科技重大专项“致密砂岩气有效开发评价技术”(2011ZX05013-002)资助。

详细信息
    作者简介:

    梅丹(1984-),女,本科,工程师,从事油气资源战略、规划、开发政策等研究。E-mail:44122023@qq.com。

    通讯作者:

    胡勇(1978-),男,高级工程师,从事油气开发研究。E-mail:657440874@qq.com。

  • 中图分类号: TE135

Experimental study on fracture contribution to gas reservoir permeability and well capacity

  • 摘要: 裂缝是气藏储层渗流的重要通道,对储层渗透率的贡献十分明显,但目前难以量化评价。针对这一难题,综合考虑裂缝尺度(缝高、缝宽和裂缝贯通程度),通过对岩心进行人工定量造缝后开展气测渗透率实验测试,分别研究了贯通和非贯通(贯通程度分别为20%,40%,60%,80%)2种情景下裂缝对岩石渗透率的贡献。结果表明,贯通和非贯通裂缝对地层岩石渗透率均有贡献。贯通裂缝对岩心渗透率贡献十分明显,可提高岩石渗透率80%以上,其作用大小与裂缝开度(缝高×缝宽)密切相关;非贯通裂缝对岩石渗透率也存在一定的贡献,对基质起到沟通作用,改善储层整体的渗流能力,其作用大小与裂缝贯通程度关系密切。在实验测试的基础上,以单井为研究对象,综合考虑裂缝导流能力、裂缝沟通能力和基质供气能力三方面因素,建立了裂缝对气井产能贡献数学模型,结合气田实际气井的基础参数评价了裂缝对气井产能的贡献。

     

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出版历程
  • 收稿日期:  2019-01-11
  • 修回日期:  2019-08-08
  • 刊出日期:  2019-09-28

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