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 • Previous Articles     Next Articles

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

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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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