Guided Project: Well Operating Limits Calculation

What Will You Learn?

• Understand hydrostatic pressure, pore pressure, fracture pressure, and their gradients.
• Perform accurate pressure calculations using wellbore fluid properties and depth.
• Determine Maximum Operating Annulus Surface Pressure (MOASP) based on casing design and barrier principles.
• Calculate Maximum Allowable Annulus Surface Pressure (MAASP) using formation fracture limits and hydrostatics.
• Use real well data (depth, mud weight, casing shoe depth, pore & fracture gradients) to calculate pressures.
• Construct pressure vs. depth plots to visualize the safe operating envelope.
• Evaluate different scenarios (e.g., changing mud weights, fluid migration, trapped annulus pressure).
• Identify risks of exceeding casing burst, collapse, or formation fracture pressures.
• Recognize the importance of maintaining annulus pressures within the safe operating window.
• Understand the relationship between casing strength, formation integrity, and well control safety.