Formulas and Calculations for Drilling, Production, and Workover

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Intro -- Formulas and Calculations for Drilling, Production, and Workover: All the Formulas You Need to Solve Drilling and Producti ... -- Copyright -- Contents -- Preface -- Prologue -- Chapter 1: Basic equations -- 1.1. Terminology -- 1.2. Mud weight MW (lb/ft3), mud weight MW (ppg), and specific gravity (SG) -- 1.3. Hydrostatic pressure (P) and (p) -- 1.4. Pressure gradient (psi/ft), G (ppg) -- 1.5. Mud pump output q (bbl/stk) and Q (gpm) -- 1.5.1. Triplex pump -- 1.5.2. Duplex pump -- 1.6. Hydraulic horsepower -- 1.7. Estimated weight of drill collars in AIR -- 1.8. Open hole and tubular capacity and displacement formulas -- 1.8.1. Capacity of open hole or tubulars -- 1.8.2. Displacement of tubulars -- 1.8.3. Annular capacity between casing or hole and drill pipe, tubing, or casing -- 1.8.4. Annular capacity between casing and multiple strings of tubing -- 1.9. Amount of cuttings drilled per foot of hole -- 1.10. Annular velocity (AV) -- 1.11. Pump output required in GPM for a desired annular velocity, ft/min -- 1.12. Bottoms-up formula -- 1.13. Pump pressure/pump stroke relationship (the Roughnecks formula) -- 1.14. Buoyancy factor (BF) -- 1.15. Formation temperature (Tf) -- 1.16. Temperature conversion formulas -- Appendix: Supplementary material -- Chapter 2: RIG calculations -- 2.1. Accumulator capacity -- 2.1.1. Usable volume per bottle -- 2.1.2. Surface application -- 2.1.3. Volume capacity of the accumulator bottle -- 2.1.4. Deepwater applications -- 2.1.5. Accumulator precharge pressure -- 2.2. Slug calculations -- 2.2.1. Barrels of slug required for a desired length of dry pipe -- 2.2.2. Weight of slug required for a desired length of dry pipe with a set volume of slug -- 2.2.3. Volume, height, and pressure gained because of placement of the slug in the drill pipe -- 2.2.4. The amount of dry pipe in feet after pumping the slug

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