Overview


Challenges
  • Observe, control pressures downhole
  • Minimize losses and avoid reservoir damage
  • Control fluid levels several thousands of feet below rig floor to lower hydrostatic head
Results
  • Provided downhole pressure data with a 98% telemetry uptime in real time during completion operations
  • Minimized customer risk, improved efficient of operations and avoided reservoir damage
Case study details

To minimize fluid losses and associated formation damage in an offshore deepwater well, a major operator needed to maintain optimum overbalance at the formation. The traditional method was to drop and control the fluid levels in the riser annulus.

Conventional measurement techniques, such as echo meters, had proved problematic in accurately measuring riser fluid level, and in providing the real-time updates required to manage inflow proactively. Fast updates are particularly needed during perforation and acidization operations, when fluid levels need continual monitoring. Additionally, any in-well tools had to be fullbore to allow the passage of wireline tools needed to operate a formation isolation valve.

 

 

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