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    ZHANG Li, YANG Ya-juan, ZHANG Yu-ling, et al. Characteristics of fractures of Chang-6 low-permeability reservoir in Chuankou oil field，Shan-Gan-Ning basin[J]. Northwestern Geology, 2002, 35(2): 41-45.
    Citation: ZHANG Li, YANG Ya-juan, ZHANG Yu-ling, et al. Characteristics of fractures of Chang-6 low-permeability reservoir in Chuankou oil field，Shan-Gan-Ning basin[J]. Northwestern Geology, 2002, 35(2): 41-45.
    shu

    Characteristics of fractures of Chang-6 low-permeability reservoir in Chuankou oil field，Shan-Gan-Ning basin

    • 1.

      Geology Department, Northwest University, Xi'an 710069, China

    • 2.

      Daqing Petroleum Administration, Daqing 163110, Chaina

    • 3.

      Yanchang Oilfiel Administration, Yanchang 717100, China

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    • Received Date: March 29, 2001
    • Revised Date: April 14, 2002
    • Published Date: June 04, 2002
      Graphical Abstract
      • Abstract
    • Fractu res of Chang 26 reservoir in Chuankou oil field are studied by use of the data of theoutcrop, cores, slices and the dip log. Main fractures, extending a long the direction of near EW, are small in size and poor-developed. Most fractures are closed underg round and will show the characteristics of open fractures by a rtificial excitation. So Chang-61. belongs to porosity reservoir . Chang-61 reservoir is 500～700m in depth. The minimum stress is vertical, and theoretically the hydraulic fracture should be horizontal. However, in fracture-developed areas, the hydraulic fractures may be vertical for the effect of natural fractures. Fractures have not shown the effect on the waterflooding by now.
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      • References (5)
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