Assam: ONGC clears rig base at RDS site, begins final phase of well control amid flood challenges

Guwahati: Oil and Natural Gas Corporation (ONGC) marked a critical milestone in its ongoing well control operations at the RDS site.

With precision and coordination, the extra-long boom crane and a 40-ton crane successfully worked together to remove the 42 tubing stands from the derrick of the rig, clearing the path for the safe removal of the rig base from the wellhead.

ONGC stated, “Following the removal of the rig base, the next phase of operations involves dismantling the existing Blowout Preventer (BOP), followed by the installation of the capping stack. During this sequence, a temporary increase in gas discharge is anticipated. ONGC assures that the gas is non-toxic, and the volume is significantly reduced, presenting no risk to inhabitants residing beyond a 500-metre radius."

Water blanketing operations continue as part of ONGC’s layered safety strategy, while both ONGC and its technical partner CUDD remain fully focused on executing the well control operations in a carefully calibrated and safe manner.

Rising waters in the Dikhow River have introduced additional logistical challenges. In response, the teams are proactively relocating high-capacity pumps to maintain uninterrupted support to ongoing safety systems.

Ambient air quality continues to be rigorously monitored, with all key parameters well within permissible limits. Medical and relief camps also remain operational, ensuring the well-being of personnel and nearby communities.