This is the exercise book accompanying Drilling Fluid Engineering.

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Description

Content

This is the exercise book accompanying Drilling Fluid Engineering.

This book presents how to apply fluid mechanics on drilling fluid related challenges and explains the related physics involved and the different engineering approaches. Mud has many functions, the single most important one is to remove the cuttings a) away from under the bit and b) transport them from the bottom to the surface. Viscosity of drilling fluids is not a constant parameter; it varies with shear rate. Pipe, rock bit and annular friction pressure loss has high importance for several tasks. Stable wellbore includes many sub tasks like chemical stability and filtration control.

These exercises have been developed to fit the content of the text book Drilling Fluid Engineering at www.bookboon.dk. The understanding of the physics and mathematics of the processes has been in focus of both the textbook and the exercises book. Many practical applications have also been created and entered into the collection of exercises. Most of the exercises have been solved and corrected by students in the corresponding course at the Department of Petroleum Engineering and Applied Geophysics at NTNU in Trondheim. If the readers have any comments that could improve the exercises, please contact me at pal.skalle@ntnu.no. Any such comments will be worked into the next year’s issue of this book.

- Fluid Properties
- Rheology control
- Rheology control
- Flocculation
- Mud contamination
- Flocculation
- Fluid additives
- Fluid additives
- Rheological models
- Bingham/Power law.
- Bingham/Power-law
- Bingham/Power-law. Regression
- Effective viscosity
- All models
- All models. Regression
- All models
- Drilling fluid dynamics
- Velocity profile. Continuity equation
- Velocity profile. Momentum flux
- Velocity profile
- Pressure loss vs. rheology
- Pressure loss vs. rheology
- Pressure loss vs. rheology
- Pressure loss. Power-law
- Pressure loss. Turbulent. Energy equation
- Pressure loss vs. flow rate
- Pressure loss. Use field data to evaluate model
- Pressure loss. Effect of rotation
- Pressure loss. Nozzles. OFU
- Swab pressure. Cling factor
- Swab pressure model
- Hydraulic program
- Mud pump issues
- Optimal nozzles? Section wise
- Liner selection. Section wise
- Hydraulic program. Section wise (i.e. all liners are treated as if in range I)
- Optimal parameters for BHHP. OFU. Section wise
- Liner selection. Complete well
- Liner selection. Complete well
- Well challenges
- Filtration control
- Filtration control
- Cuttings concentration
- Cuttings concentration
- Density control
- Density control
- ECD. Barite
- ECD. Fluid and flow
- Water activity
- Shale stability
- Shale stability
- Wellbore problem
- Supportive Information
- Pump (National 12-P-160) and hydraulic program data
- Pressure loss equations
- Conversion factors and formulas

- Solutions to exercises in drilling fluid engineering
- Rheology control
- Rheology control
- Flocculation
- Mud contamination
- Flocculation
- Fluid additives
- Fluid additives

- Rheological models
- Bingham / Power-law
- Bingham/Power-law
- Bingham/Power-law. Regression
- Effective viscosity
- All models
- All models. Regression
- All models.

- Drilling fluid dynamics
- Velocity profile. Continuity equation
- Velocity profile. Momentum flux
- Flow profile
- Pressure loss vs. rheology
- Pressure loss vs. Rheology
- Pressure loss. Power law
- Pressure loss. Turbulent flow. Energy equation
- Pressure loss vs. flow rate
- Pressure loss. Field data
- Pressure loss. Effects of rotation
- Pressure loss. Bit nozzle. OFU
- Swab pressure. Clinging factor

- Hydraulic program
- Mud pump issues
- Nozzle selection. Section wise
- Liner selection. Section wise
- Hydraulic program. Section wise
- Optimal parameters with BHHP. OFU. Section wise
- Liner selection. Complete well
- Liner selection. Complete well

- Wellbore challenges
- Filtration control
- Filtration control
- Cuttings concentration
- Cuttings
- Density control
- Density control
- ECD. Barite
- ECD. Flow rate & fluid consistency
- Water activity
- Shale stability
- Shale stability
- Wellbore problems