石油化工高等学校学报

石油化工高等学校学报 ›› 2021, Vol. 34 ›› Issue (5): 30-35.DOI: 10.3969/j.issn.1006-396X.2021.05.005

• 石油工程 • 上一篇    下一篇

低渗透复杂裂缝系统油藏见水原因及调整方法

张昌艳()   

  1. 中国石油大庆油田公司 勘探开发研究院,黑龙江 大庆 163712
  • 收稿日期:2021-04-02 修回日期:2021-04-30 出版日期:2021-10-25 发布日期:2021-11-08
  • 作者简介:张昌艳(1984⁃),女,硕士,工程师,从事油气田开发方面的研究;E⁃mail:zhangchangyan@petrochina.com.cn
  • 基金资助:
    国家重大科技专项“外围油田改善开发效果及提高采收率技术研究与应用”(2016E?0209);“低渗、特低渗复杂油藏规模有效动用关键技术”(2017ZX05013?006)

Causal Analysis and Treatment of Water Breakthrough of Low Permeability Reservoir with Complex Fracture System

Changyan Zhang()   

  1. Exploration and Development Research Instiute,Daqing Oilfield Company Ltd. ,Daqing Heilongjiang 163712,China
  • Received:2021-04-02 Revised:2021-04-30 Published:2021-10-25 Online:2021-11-08

摘要:

大庆外围低渗透裂缝性油藏储层发育天然缝、人工缝及注水诱发动态缝,受复杂裂缝体系影响,采油井见水类型多样,见水规律及原因复杂,加剧了措施调整难度。为了改善低渗透裂缝性油藏水驱效果,以CYG油田C45Z区块为研究对象,基于区块储层裂缝发育特征,划分单井见水类型,结合动静态数据,系统剖析见水规律及原因,为措施调整指明方向。通过措施调整,截至2021年3月,措施井组日增油1.0 t,含水率下降12.0%,阶段累计增油2 051.6 t,初步形成分类治理措施调整模式。

关键词: 天然缝, 动态缝, 见水类型, 见水原因, 分类调整

Abstract:

Natural, artificial and dynamic fractures are always induced by water injection in the peripheral low?permeability fractured reservoirs of Daqing. The water breakthrough types of production wells are different due to the complex fracture system, and the water breakthrough rules and causes are complex as well, which increase the difficulty of measure adjustment. In order to improve the water flooding effect of low permeability fractured reservoir, the water breakthrough types of single well, taking C45Z block in the CYG oilfield as the research object, were divided based on the fracture formation characteristics of the block reservoir. The water breakthrough rules and forming causes were systematically analyzed from dynamic and static data, so as to point out the resolution strategy for the adjustment of measures. Using the optimized methods, the average daily oil production of the sample well group increased by 1.0 t, the water cut was reduced by 12.0%, and the cumulative oil production increase in each stage was 2 051.6 t until March 2021. In this way, the adjustment mode of classified treatment measures initially formed.

Key words: Natural fracture, Dynamic fracture, Water breakthrough type, Water breakthrough reason, Classification adjustment

中图分类号: 

引用本文

张昌艳. 低渗透复杂裂缝系统油藏见水原因及调整方法[J]. 石油化工高等学校学报, 2021, 34(5): 30-35.

Changyan Zhang. Causal Analysis and Treatment of Water Breakthrough of Low Permeability Reservoir with Complex Fracture System[J]. Journal of Petrochemical Universities, 2021, 34(5): 30-35.

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