You already learn about balance cement plug and I would like to show how to calculate balance cement plug.

**Let’s start with the concept so you can imagine how the calculation should be.**

**1. Determine volume of cement that you need.**

**2. Determine height of cement and spacer when pipe in hole.**

**3. Determine displace volume to balance the hydrostatic both sides. When the displacement is completed, you should have equal height of cement/spacer/mud. You can see the figure below for more understanding.**

**4. When you pull cement stinger, you will have the balance set properly like this.**