Formulas and Calculations for Drilling, Production, and Workover

Formulas and Calculations for Drilling, Production, and Workover

by Norton J. Lapeyrouse, William C. Lyons Ph.D., P.E., Thomas Carter
Released September 2011
Publisher(s): Elsevier Science
ISBN: 9781856179294

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Book description

A quick reference for day-to-day work out on the rig or a handy study guide for drilling and well control certification courses, Formulas and Calculations for Drilling, Production and Workover has served a generation of oilfield professionals throughout their careers. Compact and readable, Formulas and Calculations for Drilling, Production and Workover, 3rd Edition is a problem solving time saving tool for the most basic or complex predicaments encountered in the field. All formulas and calculations are presented in easy-to-use, step-by-step order, virtually all the mathematics required out on the drilling rig is here in one convenient source, including formulas for pressure gradient, specific gravity, pump output, annular velocity, buoyancy factor, volume and stroke, slug weight, drill string design, cementing, depth of washout, bulk density of cuttings, and stuck pipe.
The most complete manual of its kind, Formulas and Calculations for Drilling, Production and Workover, 3rd Edition features 30% new information, including case studies and basis simulations equations. The third edition of this best selling book also includes computational tools and techniques for: unbalanced drilling, horizontal directional and air and gas drilling operations, evaluate ESP performance of wells, design / redesign ESP and recommend changes to improve well’s operation, handle special production projects including production string designs for new wells, evaluation of new production methods, scaling in well bores and any other project affecting the operation of Amal area wells.

  • Back-of-the envelope calculations that save time and money
  • Easily evaluate the performance of your well
  • Confidently design or redesign operations that will improve production
  • Handle special production projects with ease

Table of contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Preface
  6. Chapter One. Basic Equations
    1. 1.0 Terminology
    2. 1.1 Mud Weight MW (lb/ft3), Mud Weight MW (ppg), and Specific Gravity (SG) [USCS/British]
    3. 1.2 Density ρ (kg/m3 or kg/liter), Mud Weight MW (N/m3 or N/liter), and Specific Gravity (SG) [SI-Metric]
    4. 1.3 Hydrostatic Pressure (P) and (p) [USCS/British]
    5. 1.4 Hydrostatic Pressure (P) and (p) [SI-Metric]
    6. 1.5 Pressure Gradient ∇ (psi/ft), G (ppg) [USCS/British]
    7. 1.6 Pressure Gradient G (SG) [SI-Metric]
    8. 1.7 Equivalent Circulating “Density” ECD (ppg) [USCS/British]
    9. 1.8 Equivalent Circulating “Density” ECD (N/liter) and ECD (SG) [SI-Metric]
    10. 1.9 Mud Pump Output Q (bbl/stk) and q (gpm) [USCS/British]
    11. 1.10 Capacity Formulas
    12. 1.11 Annular Velocity Van (ft/min)
    13. 1.12 Strokes per Minute (SPM) Required for a Given Annular Velocity
    14. 1.13 Control Drilling
    15. 1.14 Buoyancy Factor (BF)
    16. 1.15 Decrease When Pulling Pipe Out of the Hole
    17. 1.16 Loss of Overbalance Due to Falling Mud Level
    18. 1.17 Circulating Hydraulic Horsepower (HHP)
    19. 1.18 Pump Pressure/Pump Stroke Relationship (the Roughneck's Formula)
    20. 1.19 Cost per Foot
    21. 1.20 Temperature Conversion Formulas
  7. Chapter Two. Basic Calculations
    1. 2.0 Capacity, Volumes, and Strokes
    2. 2.1 Slug Calculations
    3. 2.2 Accumulator Capacity
    4. 2.3 Bulk Density of Cuttings (Using Mud Balance)
    5. 2.4 Drill String Design (Limitations)
    6. 2.5 Ton-Mile (TM) Calculations
    7. 2.6 Cementing Calculations
    8. 2.7 Depth of a Washout
    9. 2.8 Lost Returns—Loss of Overbalance
    10. 2.9 Stuck Pipe Calculations
    11. 2.10 Calculations Required for Placing Spotting Pills in an Open Hole Annulus
    12. 2.11 Pressure Required to Break Circulation
    13. References
  8. Chapter Three. Drilling Fluids
    1. 3.0 Mud Density Increase and Volume Change
    2. 3.1 Mud Weight Reduction with Base Liquid Dilution
    3. 3.2 Mixing Fluids of Different Densities
    4. 3.3 Oil-Based Mud Calculations
    5. 3.4 Solids Analysis
    6. 3.5 Solids Fractions (Barite-Treated Muds)
    7. 3.6 Dilution of Mud System
    8. 3.7 Evaluation of Hydrocyclones
    9. 3.8 Evaluation of Centrifuge
    10. References
  9. Chapter Four. Pressure Control: Kill Sheets and Related Calculations
    1. 4.0 Normal Kill Sheet
    2. 4.1 Calculations
    3. 4.2 Kill Sheet with a Tapered String
    4. 4.3 Kill Sheet for a Highly Deviated Well
    5. 4.4 Prerecorded Information
    6. 4.5 Kick Analysis
    7. 4.6 Pressure Analysis
    8. 4.7 Stripping/Snubbing Calculations
    9. 4.8 Subsea Considerations
    10. 4.9 Workover Operations
    11. 4.10 Controlling Gas Migration
    12. 4.11 Gas Lubrication
    13. 4.12 Annular Stripping Procedures
    14. 4.13 Worksheet
    15. References
  10. Chapter Five. Engineering Calculations
    1. 5.0 Bit Nozzle Selection—Optimized Hydraulics
    2. 5.1 Hydraulics Analysis
    3. 5.2 Critical Annular Velocity and Critical Flow Rate
    4. 5.3 The “d” Exponent
    5. 5.4 Cuttings Slip Velocity
    6. 5.5 Surge and Swab Pressures
    7. 5.6 Equivalent Circulation Density (ECD)
    8. 5.7 Fracture Gradient Determination—Surface Applications
    9. 5.8 Fracture Gradient Determination—Subsea Applications
    10. 5.9 Directional Drilling Calculations
    11. 5.10 Miscellaneous Equations and Calculations
    12. References
  11. Chapter Six. Air and Gas Calculations
  12. Appendix A
    1. Tank Capacity Determinations
  13. Appendix B
  14. Appendix C. Average Annual Atmospheric Conditions
  15. Index

Product information

  • Title: Formulas and Calculations for Drilling, Production, and Workover
  • Author(s): Norton J. Lapeyrouse, William C. Lyons Ph.D., P.E., Thomas Carter
  • Release date: September 2011
  • Publisher(s): Elsevier Science
  • ISBN: 9781856179294