The fire broke out on Sunday after a five-and-a-half-month effort at Oil India Limited (OIL)’s Bagjan natural gas well, which had been inflated since June 9.
A team of Canadian experts arrived at the scene in the Tinsukia district on November 4 and extinguished the fire using a technique called snubbing.
“The well was killed with saline solution and is now under control. The fire was completely extinguished,” OIL spokesman Tridev Hazarika said in a statement on Sunday.
“There is no pressure in the well now and 24 hours will be observed to check if there are any gas leaks and pressure. The next operation to clear the well is in progress,” he added.
A gas well in Tinsukia district was blown out during a workover operation on May 27 (releasing oil or gas uncontrollably) on June 9, killing two firefighters. Another engineer died of electrocution at the site in September.
Although a fire broke out at Wellhead in August, a portion of the released gas was diverted for production, directing the fire pit near the unused gas well.
Finally decided to ‘kill’ by snooping the well — a process of installing or removing pipes from the well. This technique is used when it is not possible or when one wants to kill a well using a sludge called ‘Kill Fluid’, a technique that has not been successful before.
Earlier this month, a National Green Tribunal (NGT) panel said OIL was operating well at Bagjan without the necessary official approvals at the time of the incident.
In its progress report filed on November 3, the committee, headed by retired Guwahati High Court judge Brojendra Prasad Katake, recommended that the Pollution Control Board, Assam (PCBA) be directed to take legal action against OIL and its officials for violating the mandatory requirements. .
The committee report said that despite the Supreme Court orders, OIL had not conducted a biodiversity impact assessment study for the Bagzan well near the Dibru Saikova National Park (DSNP).
OIL has stated that it has not obtained an environmental permit from the Union Ministry of Environment, Forests and Climate Change prior to the commencement of drilling operations at Bagzan since November, 2006.
In addition to the loss of three lives, more than a dozen houses near the well were engulfed in flames and nearly 40 were partially damaged. Thousands of people were forced to flee their homes and live in makeshift camps as efforts were made to contain the blaze.