Chapter Two
Basic Calculations
Nomenclature for Equations
| Symbol | Description | Units |
| Abcs | area below the casing shoe | sq. in. |
| As | cross-sectional area of the pipe wall | sq. in. |
| BF | buoyancy factor | dimensionless |
| Cbp | strokes to bump the plug | stk |
| Cca | cycles or strokes for casing/drill pipe annulus | stk |
| Ccsfp | strokes required to chase the spotting fluid | stk |
| Cdca | cycles or strokes for open hole/drill collar annulus | stk |
| Cdcmt | strokes required to displace the cement | stk |
| Cdpa | cycles or strokes for open hole/drill pipe annulus | stk |
| Cds | cycles or strokes for inside the drill string | stk |
| Chwdpa | cycles or strokes for open hole/heavy weight drill pipe annulus | stk |
| Cr | strokes required for the pump pressure to increase | stk |
| Cra | cycles or strokes for riser/drill pipe annulus | stk |
| Cs | number of pump cycles or strokes ... |
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