High Pressure Squeeze
Definition - What does High Pressure Squeeze mean?
High Pressure Squeeze is a technique in squeeze cementing that involves the application of treatment pressure which is higher than the formation fracture pressure. The procedure may force slurry into annuli or microcracks surrounding a borehole. The characteristics of a fracture depend on the fluid flow rate when the fracture is initiated. Therefore, High Pressure Squeeze should be carried out with great care so as to place slurry in the desired location. This technique of cementing is used where hydraulic pressure is utilized to make new channels in rock formations and also to force the slurry into these channels.
Petropedia explains High Pressure Squeeze
In High Pressure squeeze, a formation is fractured initially by solid free fluids. The solid free fluids like brie or water are recommended as they can build a filter cake and block injection into the formation. The fracture's direction depends on the rock stresses of the formation. After the formation breaks down, cement slurry can be spotted adjacent to a formation and then pumped into the annuli or microcracks at a slow rate. When the cement slurry fills up the fractured area, injection pressure must build up gradually. After squeezing the cement, pressure is released for checking for back flow.