The filter body filter loss is difficult to estimate

Natural fractures natural reservoir medium cracks and under the action of external force can open the potential presence of cracks, which makes the liquid in the fracturing fluid loss coefficient showed 2 characteristics,

  One is the filtration coefficient is dynamic, the other one is the filtration coefficient than the homogeneous medium under the same conditions much more,
Is usually increased the magnitude of the.

It is this kind of reservoir fracturing sand plug an important reason for the high rate.