Abstract This chapter contains sections titled: Accumulators Driller's Method Formulas Used in Kick and Kill Procedures Hydrostatic Pressure Due to the Gas Column Kill Methods Kill Mud Weight Leak‐ This free download spreadsheet section includes the following drilling formulas calculations: Bulk Density of Cuttings by using Mud Balance. Decrease oil water ratio. Determine oil water ratio from a retort analysis. Determine the density of oil/water mixture. Dilution to control LGS. 6.16 Cumulative Fatigue Calculation 247 7. Drilling Tools 253 . 7.1 Stretch Calculations 253 7.2 Backoff Calculations 254 7.3 Overpull/Slack-Off Calculations 257 7.4 Motor Calculations 259 7.4.1 Type I Motor 260 7.4.2 Type II Motor 261 7.4.3 Type III Motor 262 7.4.4 Type IV Motor 263 7.5 Stabilizer Calculations 265 7.5.1 Stabilizer Jamming Springer International Publishing AG, 2017. 304 p. ISBN 978-3-319-63189-9, 978-3-319-63190-5. This book removes the mystery and pressure from calculations by equipping readers with the tools they need to understand calculations and how they work. This is done by using straight-forward language