XACT service monitored fluid levels, minimized reservoir damage

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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