Factors such as mud weight, salinity, temperatre and it's effect on drilling performance in sub-salts is discussed.

1. Effect of Mud Properties on Salt
Dome Drilling
Prepared by:
Nikhil G Barshettiwar
MIT Pune

2. Contents
• Introduction
• Effect of Mud Weight
• Effect of Mud Temperature
• Effect of Mud Chemistry
• Conclusion
• References

3. Introduction

4. Introduction

5. Effect Of Mud Weight
y = 0.0054x2 - 0.1894x + 1.6417
R² = 0.9953
-0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0 2 4 6 8 10 12 14 16 18 20
Closurerate(inch/year)
Mud weight (ppg)
Closure rate Vs Mud weight
Poly. (Closure rate Vs Mud weight)

6. Effect Of Mud Weight

7. Effect Of Mud Weight

8. Effect Of Mud Weight

9. Effect Of Mud Weight

10. Effect of Temperature
y = 0.0007x2 - 0.1305x + 5.053
R² = 0.9562
-2
0
2
4
6
8
10
12
14
0 50 100 150 200 250
Starinnrate,yr-1
Temperature deg C
Strain rate Vs Temperature
Poly. (Strain rate Vs Temperature)

11. Effect of Temperature
y = 1E-10x4.6272
R² = 0.9877
0.001
0.01
0.1
1
10
0 50 100 150 200 250
Closurerateyr-1
Temperature deg C
Closure rate Vs Temperature
Power (Closure rate Vs Temperature)

12. Effect of Mud Chemistry

13. References
• Juren Xie et al.’, “Modeling and Analysis of salt creep formations in Drilling
Applications”, C-FER Technologies Inc Canada
•M.B. Dasseult’, “Drilling through salt: Constitutive behavior and drilling strategies”,
GEOMECH
•Craig Beasley’, “Brazil’s salt play”, Oilfield Overview
•Zee et al.’, “3D Geomechanical Modeling of Complex Salt Structures”, SIMULIA
Customer Conference

14. THANK YOU