Special Oil & Gas Reservoirs ›› 2022, Vol. 29 ›› Issue (3): 57-63.DOI: 10.3969/j.issn.1006-6535.2022.03.008

• Geologic Exploration • Previous Articles     Next Articles

Study on Logging Identification Method and Influencing Factors of Water-flooded Zone in Tight Sandstone Reservoir

Liu Yanhong1, Luo Xingwang1, Zhang Wu1, Li Chen1, Zhang Ruixue1, Luo Qiang1, Wang Bin2, Zhang Yanmei1   

  1. 1. PetroChina Xinjiang Oilfield Company, Fukang, Xinjiang 831511, China;
    2. Xinjiang Zhundong Petroleum Technology Co. Ltd,Fukang,Xinjiang 831511,China
  • Received:2021-04-26 Revised:2022-03-28 Online:2022-06-25 Published:2023-01-09

Abstract: In view of the complex and variable logging response characteristics of the Permian tight sandstone reservoirs in Junggar Basin, difficulty in identifying the water-flooded zones, and other challenges, a logging interpretation model was established for the parameters of the water-flooded zones according to the logging principles and methods, so as to obtain the characteristic parameters of water-flooded zone such as oil saturation and flow zone indicator. A set of quantitative characterization technologies for water-flooded zones in fractured tight sandstone oil reservoirs were developed to accurately identify the logging response characteristics of water-flooded zones. The field application results showed that the technology worked well in actual oil wells. After the implementation of the scheme, the water cut of the oil well was decreased sharply from 98% to 40%, the daily oil production increased from 0.5 t/d to 5.2 t/d, and the productivity increased nearly 10 times, with obvious development effect. The research results enrich the effective identification and quantitative characterization of water-flooded zones in Junggar Basin, and also provide a reference for the identification and effective development of water-flooded zones in similar oil reservoirs.

Key words: tight sandstone, lithology, logging response, influencing factors, well placement, Junggar Basin, Huoshaoshan Oilfield

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