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The Bottom Cementing Plug is designed to exert continuous pressure on the casing wall. The core is made of special materials such as Plastic, Aluminum or Phenolic depending on the application and well conditions. The tapered base fits the cavity of the bottom plug initiating a positive seal. A solid rubber top plug is also available.
Like the Top Cementing Plug, the fins and tail section provide positive wiping action. Fins also serve as a seal while cementing. The core of the bottom plug also made of special materials such as Plastic, Aluminum or Phenolic depending on the application and well conditions. A rubber diaphragm at the top of the plug ruptures after the plug is seated allowing cement to flow through.
1. Separate cement slurry from drilling fluid and prevent contamination.
2. Both plastic core and rubber fins are easily drillable.
3. Available in two types: conventional and non-rotating.
4. Non-rotating design reduces drill-out time.