1- Try to minimize the size of the washouts during the drilling process across the intervals to be isolated.
2- Centralize the casing. Take into account dogleg severity and hole inclination in centralizer placement. it is a major factor to get a good cement job.
3- Circulate hole & condition mud prior to cementing. The mud should be thinned as much as possible while still maintaining adequate lifting capacity and density.
4- Reciprocate (or rotate in critical situations) the casing while circulating and cementing. Unless the casing starts to stick, the casing should be reciprocated until the plug bumps.
5- Pump a thin spacer fluid ahead of cement. The spacer should be compatible with the drilling fluid and the cement.
6- Pump a thin cement slurry at high displacement rates. Use plug flow techniques only when high rate displacement is not possible.
7- Use the most economical slurry possessing satisfactory properties (Viscosity, Density,Retarder, Fluid loss, …etc)
8- Don’t hold pressure on casing after the Bump plug unless the float equipment doesn’t hold. Keeping pressure on the casing while the cement sets can cause a micro annulus.
9- In high angle directional wells, prevent the formation of a water channel on the high side of the hole. Minimize the cuttings bed on the low side of the hole by cleaning the hole with adequate annular velocities.