Anomaly Description:
An uncontrolled release of crude oil into a sensitive river environment. The leak was identified as originating from the annulus between a 26″ conductor pipe and a 13-3/8″ casing string. This breach resulted in hydrocarbons spewing under pressure from the wellhead assembly directly into the surrounding water.

Root causes:
Significant mechanical damage.

Integrity concerns:
Immediate threat of environmental contamination to the aquatic ecosystem and potential risks to nearby communities. The “Wild Well” condition necessitated an urgent intervention to regain hydrostatic control and restore the structural integrity of the wellbore connection.

To repair the breach, an engineered leak sealing enclosure was designed in accordance with ASME PCC-2 and BPVC Section VIII Div. 1 standards, utilizing a split sleave design and high-pressure seals to isolate the leak. This mechanical clamp solution incorporated a support clamp to ensure asset integrity for the lifespan of the repair Following installation, the integrity of the assembly was verified through a successful leak test, confirming full pressure containment.