LITHOLOGIC RESERVOIRS ›› 2015, Vol. 27 ›› Issue (6): 111-118.doi: 10.3969/j.issn.1673-8926.2015.06.015

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Application of ant tracking technology to fracture prediction:A case study from Xiagou Formation in Qingxi Oilfield

Zhou Wen1， Yin Taiju1， Zhang Yachun2， Li Weiqiang1， Wang Dongdong1   

  1.  1. School of Geosciences ， Yangtze University ， Wuhan 430100 ， China ； 2. School of Earth Environment and Water Resources ， Yangtze University ， Wuhan 430100 ， China
  • Online:2015-12-20 Published:2015-12-20

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Abstract:

 The main reservoirs of the Low Cretaceous Xiagou Formation are characterized by muddy dolomite with low porosity and low permeability and conglomerate in Qingxi Oilfield, where fractures act as important migration and accumulation space and have controlling effect on oil enrichment. Ant tracking technology and imaging logging data were applied to analyze the characteristics of the fractures in Qingxi Oilfield. The fractures distribution of Xiagou Formation was predicted and the fracture model of Qingxi Oilfield was established. The results show that the study area mainly developed two sets of fractures including NE-SW trend and NW-SE trend, the fractures developed with high degree are mainly located in the northwest, northeast and southeast of Qingxi Oilfield, and high yielding wells are mostly located in these areas. Consequently, the areas with high degree development of fracture are favorable for oil and gas exploration and development at the late stage.

Key words:  , braided river delta； meandering river delta； sedimentary characteristics； evolution models； backbulge , zone； Sangtamu area

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