• Introduction, geology and rock mechanic reminder
• Statistics about NPT
• Rock structure, mineralogy, main characteristics of sedimentary rock
• Rock mechanic: stress in the ground, stress effect on hole stability
• Rock mechanic and hole stability exercises
• Drill string limits, mud and hole cleaning reminder
• Drill string characteristics, overpull margin, buckling
• Mud and hole cleaning: rheology and hole trajectory influence on hole cleaning
• Methods to assess the quality of the hole cleaning
• Methods to improve the hole cleaning
• Causes of stuck pipe and first actions
• Differential sticking
• Mechanical and wellbore geometry sticking
• Solids induced pack off
• Warning signs of stuck pipe occurrence
• Example for case study: determination and analysis of causes of stuck pipe
• Methods to free the drill string
• Determination of the stuck point, exercises
• Jarring: hydraulic and mechanical jar
• Exercises on mechanical jar adjustment
• Differential pressure reduction, exercises
• Use of lubricant pills
• Back off, exercises
• Procedure for a fishing job
• Description, function and utilization of different fishing equipment
• Preventive measures
• How to avoid stuck pipe and prevent drill string rupture while drilling and stripping
• Choices in planning fishing operation
• Directional drilling problems and solutions
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