西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 121-124.DOI: 10.3863/j.issn.1674 – 5086.2011.04.022

• 石油与天然气工程 • 上一篇    下一篇

裂缝性油藏高效压裂技术研究与应用

王 峰1, 2   

  1. 1. 中国科学院地质与地球物理研究所, 北京 朝阳 100029; 2. 中国石油吉林油田分公司, 吉林 松原 138000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20

Efficient Fracturing Technique Research and Application in Natural FracturesReservoir

WANG Feng1, 2   

  1. 1. School of Geology and Geophysics, Chinese Academy of Sciences, Chaoyang, Beijing 100029, China; 2. Jilin Oilfield Company,PetroChina, Songyuan, Jilin 138000, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 裂缝性油藏中天然裂缝的存在使得液体滤失量大, 人工裂缝延伸扩展规律复杂, 压裂施工砂堵率高,
如何提高该类油藏压裂效果是油藏改造领域的重大难题。针对乾北—大情字井地区裂缝发育程度, 压裂引
起的储层污染等进行分析并开展高效压裂技术研究, 基于天然裂缝分布规律分析和油藏两个水平主应力差
值与裂缝延伸净压力的关系, 提出了实现支撑天然裂缝的条件和工艺技术措施; 综合分析了压裂过程的伤
害因素, 研发出能有效降解压裂液残渣的中高温生物酶破胶剂。研究成果在乾北—大情字井地区 16 口井
应用, 增产效果明显, 为裂缝性油藏压裂改造提供了新思路。

关键词: 裂缝性油藏, 压裂, 生物酶, 乾北—大情字井地区

Abstract: Natural fractures in reservoir lead to large amount of the fracturing liquid filtered, the complicate expand-
ing laws of artificial fractures, and higher probability of sand’s walling up. Aiming at Qianbei-Daqingzijing region
natural fractures growth degree and pollution of reservoir, efficiently fracturing technique research and application
in natural fractures reservoir are carried out. According to analysis of natural fracture distribution law and the rela-
tionship between two horizontal principle stress difference and fracture extension net pressure, technology measure
and conditions of supporting natural fractures are proposed. The injury factors of fracturing process are comprehen-
sively analyzed. The gel breaker, which can effectively degrade the middle-high temperature enzyme in fracturing
fluidresidues, isdeveloped. Upontheapplicationoftheresearchresultsin16wellsofQianbei-Daqingzijingregion,
the stimulation effect is obvious, which provides a new way of fracturing in natural fracture reservoir.

Key words: natural fractures reservoir, fracturing, biological enzyme, Qianbei-Daqingzijing region

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