Proppant embedded within the formation and pressure relationships

Pressure below 50 MPa, the  Proppant  no embedded or embedded phenomenon is not obvious, not because of conductivity embed affected. When the closure pressure greater than 50 MPa, the use of core pressure drops rapidly, indicating that when the closure pressure greater than 50 MPa, the conductivity proppant embedment came under the influence. Closing pressure of 60MPa, use steel diversion capacity of 140μm2 cm, using the core conductivity 85μm2 cm, just because you can embed a reduced ability to cause diversion 39.3%.
With the closing pressure is further increased, up to 80 MPa after the difference begins to decrease, which is due to the steel sheet further proppant crushing, proppant crushing injuries caused by approaching the embedded conductivity damage. But there is always embedded in conductivity occurs no less than the ability to embed diversion occurred.
Proppant embedded within the formation damage on the conductivity is very serious, 10 kg / m2 sanding concentration can lead to diversion because it is embedded under reduced ability 65. 9%, 5 kg / m2 sanding concentration conductivity can be reduced 87.5%, sanding concentration greater diversion capabilities embedded on the degree of injury is smaller.
Only closure pressure reaches a certain value, the embedded damage was manifested. The harmful effects of embedding manifested fracture closure pressure within the size and  frac sand  concentration. In the same stratigraphic conditions proppant embedded in the conglomerate in the most serious, followed by mudstone, siltstone minimum.