Downhole Troubles

Learning Topics

1. What is Ballooning? Causes, Effects, Detection, and Control

2. Types of Losses

3. Causes, Effects, and Control of Seepage Loss

4. Salt Drilling Challenges

5. Differential Sticking - Causes, indications, prevention, and recovery

6. Mechanical sticking – Causes, indications, prevention, and recovery

7. Surge and Swab in Drilling

8. Common indicators of wellbore instability

9. Common causes of wellbore instability

Case Studies

1. Shale Instability

Data Sheets and Calculation Tools

1. Surge and Swab Pressure: Engineering software should be used for precise calculations. This Excel sheet can be used to quickly calculate surge and swab pressures.

Presentation:

1. Ballooning and Supercharging

e-Learning Resources

1. Surge & Swab: Understanding the difference, causes, and measurements of surge and swab pressures while drilling a well.