Exercises in Pressure Control During Drilling

This is the exercise book accompanying Pressure Control During Drilling

Porous sedimentary formations penetrated by the rock bit contain fluids such as oil, gas or salt water. If the hydrostatic pressure of the drilling fluid drops below the formation pore pressure, pore fluid will enter the well and “kick” the mud out of the well. To control the pressure while drilling you need to understand the behavior of gas. This book aims at explaining the physics and the engineering approaches behind pressures in the sediments, detection of unstable wellbores, equipments necessary to close and kill the well, killing methods and offshore challenges.

1. High pore pressure zone
2. Porosity. Overburden. Sonic log
3. Porosity. Overburden. Sonic
4. Pore pressure detection
5. Pore pressure, dc
6. Pore pressure detection. dc Overlay curves
7. Fracture pressure. LOT
8. Fracture pressure from field data

1. Preparing for kick
2. Safety margin
3. Kill sheet. W & W. Conventional. Fracturing
4. Engineer’s method. Conventional. Pressure in 3 situations
5. Driller’s. Conventional. Pressure in 6 situations
6. Killing. Fracturing. W & W. Conventional
7. Killing. Fracturing. W & W. Conventional
8. Is conventional killing acceptable?
9. Killing operation. Modified due to high choke line friction
10. Driller’s. Modified due to high choke line friction
11. Engineer’s. Modified. Pressure in situation # 2 and 3
12. Modified. Stop in operation
13. Modified. More realistic drill string
14. Modified. More realistic drill string
15. Modified and volumetric
16. Volumetric method
17. Comparing 3 Killing methods. Annular friction included.

1. Gas transport and percolation
2. Wellbore pressure during 2-phase flow
3. Gas solubility
4. Gas solubility

1. Cold water issues
2. SWF
3. Cementing operations

1. High pore pressure zone
2. Porosity. Overburden. Sonic log
3. Porosity. Overburden. Sonic
4. Pore pressure detection.
5. Pore pressure, dc
6. Pore pressure detection. dc overlay curve
7. Fracture pressure. LOT
8. Fracture pressure from field data

1. Preparing for kick
2. Safety margins
3. Kill sheet. W & W. Conventional. Fracturing
4. Engineer’s. Conventional. Pressure in 3 situations
5. Driller’s. Conventional. Pressure in 6 situations
6. Killing. Fracturing. W & W Conventional
7. Killing. Fracturing. W & W. Conventional
8. Is conventional killing acceptable?
9. Killing operations. Modified for high choke line friction
10. Driller’s Modified due to high choke line friction
11. Engineer’s. Modified. Pressure in situation #2 and 3
12. Modified Stop in operation
13. Modified. More realistic drill string
14. Modified. More realistic drill string
15. Modified and volumetric
16. Volumetric method
17. Comparing 3 Annular friction included killing methods

1. Gas transport and percolation
2. Wellbore pressure during 2-phase flow
3. Gas solubility
4. Gas solubility

1. Cold water issues
2. SWF
3. Cementing operations