Proppant relations embedded in the ground and pressure

When pressure is lower than 50 MPa, the proppant is not embedded or embedded is not obvious phenomenon occurs not because of the ability to embed diversion affected . When the closure pressure greater than 50 MPa, using the core pressure drop rapidly , indicating that when the closure pressure higher than 50 MPa, conductivity started by chinese proppant embedment effects . Closed pressure 60MPa, using 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 , the difference between the two begins to decrease , which is due to the steel sheet further proppant crushing ,maide proppant manufacturers  conductivity crushing injuries caused by embedding the damage gradually close . But the ability to embed diversion always occur no less than the ability to embed diversion occurred .
Proppant embedment in the formation of the conductivity of the injury is very serious, under 10 kg / m2 sanding concentration due to the decreased ability to embed diversion may lead to 65.9% , down 5 kg / m2 sanding concentration conductivity can be reduced 87.5% , the greater the sanding concentration , the smaller the degree of damage to the diversion embedding capabilities .
Only when the pressure reaches a certain value closes , the damage was manifested embedded . So embedded harmful effects manifested closure pressure and the size of the crack spread sand concentration. Under the same conditions of formation , proppant embedment in the most serious conglomerate , mudstone Secondly , siltstone minimum .