To the problem of the formation not producing water at pre-fracture and producing water at post-fracture,it is very important that the forecast at pre-fracture time for producing water layer of the well whose oil productivity is smaller than that at pre-fracture because of too much of water production.

On the application of bored cast-in-situ pile post-grouting technology in certain engineering;

Construction quality control measures of post-grouting reinforced concrete casting pile;

Impacting mechanism of post-grouting;