Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (2): 525-535.doi: 10.13278/j.cnki.jjuese.201602202

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Evaluation of Hot Dry Rock Resource Potential Under Different Reservoir Conditions in Xujiaweizi Area, Daqing

Guo Liangliang1, Zhang Yanjun1,2, Xu Tianfu2, Jin Xianpeng3   

  1. 1. School of Construction Engineering, Jilin University, Changchun 130026, China;
    2. Key Lab of Groundwater Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China;
    3. Downhole Operation Company of Daqing Oilfield, Daqing 163453, Heilongjiang, China
  • Received:2015-06-14 Published:2016-03-26
  • Supported by:

    Supported by the National High Technology Research and Development Program of China (2012AA052803), National Natural Science Foundation of China (41372239) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20110061110055)

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Abstract:

To evaluate the hot dry rock (HDR) resource under different conditions in Xujiaweizi area in Daqing, based on the real logging data of one deep well we divided the existing conditions into several types. For each formation type, we proposed the corresponding fracturing strategy and created 3D fracturing model. Based on the stimulated reservoir, the hydro-thermal simulations were performed by using TOUGH2, and the extracted thermal energy was evaluated. The results indicate that Yingcheng formation is the most suitable reservoir for HDR development at present; the target formation based on feature fracture could be divided into tight and fractured formation; based on stress confinement condition, it could be subdivided to confined and unconfined formation; after 20 years operation (horizontal part length is 2000 m), the heat production from the confined and unconfined formation are 3500-5350 kJ/s and 5600-7760 kJ/s respectively, when the injection rate are 20 and 32 kg/s respectively; whereas the heat from naturally fractured formation is much higher than that from tight formation (injection rate is 30 kg/s, heat production is 17000-18500 kJ/s). Above all, the horizontal technique makes the tight formation also have the HDR resource development potential.

Key words: hot dry rock, hydraulic fracturing, horizontal well, hydro-thermal simulation, development potential

CLC Number: 

  • P641

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