Drilling Fluid Engineering

Content

1. Introduction
   1. Nine distinct mud systems
   2. The four main tasks of a drilling fluid
   3. About this book
2. Mud circulation loop and its components
   1. The mud loop and solids control
   2. The mud pump
3. Drilling fluid viscosity control
   1. Clay chemistry
   2. Polymer chemistry
   3. Rheology of drilling fluids
   4. Filtration control
   5. Additives
4. Hydraulic friction in the circulating system
   1. Head loss
   2. Laminar flow
   3. Turbulent pipe flow
   4. Singularity losses
5. Removal of cuttings from under the bit
   1. Cuttings removal process
   2. Boundary conditions of the drilling process
   3. Optimizing ROP, liner by liner
   4. Optimizing the complete well
6. Transport of cuttings to the surface
   1. Hole cleaning in vertical wells
   2. Hole cleaning in medium inclined wells
   3. Hole cleaning in highly inclined wells
7. Keeping wellbore within maximum and minimum pressure; ECD-control
   1. Density control
   2. ECD factors
   3. Temperature variation
   4. Mathematical model of pressure surge & swab
8. Keeping the wellbore stable
   1. Introduction
   2. Mechanical stability
   3. Chemical stability
   4. Inhibitive muds
   5. Hole problems
   6. Countermeasures to hole-problems
9. References
10. Supportive information
    1. Nomenclature
    2. Abbreviations and explanations
    3. Definitions
    4. Continuity, momentum and energy equation in microscopic and macroscopic form
    5. Hydraulic friction loss equations
    6. Determine Rheological Constants – Regression Analysis
    7. Unit conversion factors
    8. Viscosity and density of water vs. temperature