Cement grouting is vital, stabilising and sealing boreholes. It’s the way to assist effective production of water, and oil and gas, and to control the high pressures encountered.
Cement grouting seals the formation to prevent any fluid movement through it, and consolidates the formation to allow a stable hole to be drilled through. It avoids waste of water and reinforces the hole against pressure.
This matters because a good seal
- prevents contamination of the aquifers from surface water
- prevents contamination of the surface waters themselves from water coming up from the borehole
- and protects potable and saline aquifers and other components of the formation from one another
We have our own cementing equipment which is regularly used for transducer installation in boreholes and may be used to cement casing in place.
The larger pumping unit comprises a colloidal mixer, an agitator tank and twin duplex pumps each capable of 150 litres/minute (0.95 bbl/min) at 8.2 MPa (1200 psi) pressure.
The smaller pumping units are suitable for smaller jobs and even underground use.
We have also developed its own range of cementitious grouts. We can control the density, set time and viscosity of its various mixtures. It even has grouts with post initial set expansion behaviours to lock stress change cells into a borehole or to ensure that watertight seals are formed around casing.