采油作业入井液固相颗粒与储层损害关系的试验研究

Relationship between Solid Particles from Incoming Well Fluids in Production and Formation Damage

通过模拟试验 ,研究了在不同渗透率的岩石中采油作业入井液固相颗粒对岩石渗透率的损害。结果表明 ,在中、低渗透率和高渗透率的岩石中 ,入井液固相颗粒的直径和含量增加 ,岩石渗透率损害率增加 ;增大入井液的返排压力 ,岩石渗透率损害率减小。

Through a simulating experiment the rock permeability damage is studied, which is caused by the solid particles from incoming well fluids in the rocks with different permeability during production The result of study shows that the diameters and contents of solid particles increase in the rocks with different permeability, thus the damage rate of permeability increase, and it reduces with the increase of flowback pressure of the incoming well fluids