Guidelines for Design of Cement Plugs
General Guidelines for Setting Cement Plugs (job design, volume and excess Requirements, slurry requirements)
In deviated wells (deviation > 30 °, a solid base should be provided for the cement plug (bridge plug or a highly viscous and pumpable pill).
In potential loss zones, it is better to set abandonment cement plugs in two stages. The bottom cement plug should be have a relatively short thickening time to support the other abandonment plugs.
If the hole is washed out, it is recommended to set two short . . .