Hydrating lost-circulation squeeze resolves issues in deep HPHT gas pay zone

Canadian Natural Resources Ltd. controlled losses and a significant H2S kick in a deep well using a new dual-action lost-circulation material. CNRL experienced severe losses while drilling through a high-pressure, deep gas pay zone in the foothills of west-central Alberta. Reducing the drilling-fluid density slowed the rate of losses; however, the decrease in hydrostatic pressure led to a gas influx from the same formation.

Th 147594
In order to access this content, you must be logged-in and have an active subscription to the OGJ Premium Archive

Subscribe

More in Production Operations