A natural gas well blowout in a remote region of Kazakhstan has caused a massive methane leak, raising concerns about the risks associated with fossil fuel exploration.
Alarming Sattelite Observations
Using satellite data, scientists have observed giant methane clouds emanating from the site multiple times, confirming the severity of the leak and its potential environmental impact, Bloomberg News reports.
French geo-analytics firm Kayrros SAS reported that satellites captured methane emissions from the site at least nine times in the month of July 23.
These findings were supported by scientists at SRON Netherlands Institute for Space Research, who corroborated the extent of the methane leak.
The well in question, No. 303, is situated in the Karaturun Vostochny gas field in eastern Kazakhstan and is operated by Almaty-based Buzachi Neft LLP.
Buzachi Neft, in an emailed statement on August 1, acknowledged the occurrence of an accident at the exploration well on June 9 and stated that the site has been burning continuously since then.
However, the company suggested that satellite images mainly show hot vapor clouds with minimal traces of methane, a claim that satellite scientists contested amid previous observations.
Confirming Sattelite Data
Kayrros SAS responded to the company's assertion, asserting that it is unlikely to mistake water vapor for methane, especially with data from hyperspectral satellites.
The satellite observations from the European Space Agency's Sentinel-5P and the Italian Space Agency's Prisma provided further evidence of the methane plumes. Notably, Sentinel-5P's spectrometer was specifically designed to detect methane.
According to Kayrros SAS's estimates, the methane emission rates from the site range between 35 and 107 metric tons per hour. If accurate, this continuous methane spewing since June 9 has caused short-term climate damage equivalent to the annual emissions of approximately 814,000 to 2.49 million US cars.
The firm deemed it likely the most significant methane leak attributable to a single source this year.
Methane Leak
SRON also analyzed methane plumes using observations from the Sentinel-5P satellite and found the mean emissions rate to be around 100 metric tons per hour. Of the roughly 1,200 methane plumes detected worldwide this year, only 10% have exceeded 100 tons per hour.
Methane, the primary component of natural gas, possesses a significantly higher warming potential than carbon dioxide during its first 20 years in the atmosphere, making it a significant contributor to climate change.
Global efforts to track and mitigate avoidable methane leaks have become imperative as the planet faces extreme weather events, from wildfires to heatwaves.
The situation at the gas well in Kazakhstan remains critical. Buzachi Neft stated that the fire's epicenter is burning at an intense 650°C, with natural gas escaping from the site and generating steam from water. The company reported that approximately 12,000 cubic meters of natural gas are spewing from the site daily.
In response to the emergency, Buzachi Neft and other stakeholders, including Zaman Energo Ltd (the contractor that drilled the well) and the Ministry of Emergency Situations, are pooling efforts to seal the leak.
Aljazeera reported last year that a methane explosion at a coal mine in central Kazakhstan killed at least five miners and injured four more.
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