新疆石油地质

新疆石油地质 ›› 2011, Vol. 32 ›› Issue (1): 51-53.

• 油藏工程 • 上一篇    下一篇

牙哈23凝析气藏剩余凝析油分布规律

焦玉卫1, 李保柱1, 吴迪2, 张学磊1, 闫建业2, 谢伟2   

  1. 1.中国石油勘探开发研究院,北京100083;
    2.中国石油塔里木油田分公司,新疆库尔勒841000
  • 收稿日期:2010-08-11 发布日期:2020-08-07
  • 作者简介:焦玉卫（1982-）,男,山东惠民人,博士,气田开发,（Tel）010-83598621（E-mail）jiao_yuwei@126.com.
  • 基金资助:
    国家973项目（2007CB209500）; 特殊天然气藏开发配套技术研究（2008B-1105）

Distribution of Remained Condensate in Yaha-23 Condensate Gas Reservoir

JIAO Yu-wei1, LI Bao-zhu1, WU Di2, ZHANG Xue-lei1, YAN Jian-ye2, XIE Wei2   

  1. 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
  • Received:2010-08-11 Published:2020-08-07

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摘要： 为达到较高的凝析油采收率,对高凝析油含量的牙哈23凝析气藏采用了回注干气的开发方式。目前气藏开发过程中的主要矛盾是部分生产井气油比升高加快,导致凝析油产量急剧下降,回注干气效果变差。从气藏地质特征分析出发,描述了储集层的非均质特征,通过对生产剖面测试、示踪剂监测和单井生产动态的研究,认为气油比上升加快的主要原因是干气突破。研究了回注干气的推进规律,根据动态分析结果对全气藏气、水相态特征及饱和度的变化规律进行了开发动态数值模拟,最终确定出剩余高凝析油含量的富集区,为气藏的开发调整、改善回注干气的开发效果、提高凝析油采收率提供依据。

关键词: 塔里木盆地, 凝析气藏, 回注干气, 生产剖面, 示踪剂, 数值模拟

Abstract: As a condensate gas reservoir with high content of condensate oil, Taha-23 condensate gas reservoir is developed by dry-gas reinjection process for EOR. At present, the main problem during its development is that gas-condensate ratios of a part of wells increase quickly, causing rapid decline of condensate production and poor reinjection effectiveness. This paper analyzes the geological feature of the reservoir, describes its heterogeneity and researches the production profile testing, tracer testing and well production performance. It is suggested that gas breakthrough is the main reason for the high gas-condensate ratios. Therefore, the numerical simulation of production performance is conducted, including dry-gas reinjection advancing, gas-water phase behavior features and their saturation variations. Finally, the remained high condensate areas are determined. These provide solid bases for development adjustment, EOR and improvement of dry-gas reinjection effectiveness.

Key words: Tarim basin, condensate gas reservoir, dry-gas reinjection, production profile, tracer, numerical simulation

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