Tag Archives: Claire satellite methane

Measuring Methane Emissions

The American gas industry faces growing pressure from investors and customers to prove that its fuel has a lower-carbon provenance to sell it around the world. That has led the top U.S. gas producer, EQ , and the top exporter, Cheniere Energy to team up and track the emissions from wells that feed major shipping terminals. The companies are trying to collect reliable data on releases of methane—a potent greenhouse gas increasingly attracting scrutiny for its contributions to climate change—and demonstrate they can reduce these emissions over time.

“What we’re trying to really do is build the trust up to the end user that our measurements are correct,” said David Khani, EQT’s chief financial officer. “Let’s put our money where our mouth is.” Natural gas has boomed world-wide over the past few decades as countries moved to supplant dirtier fossil fuels such as coal and oil. It has long been touted as a bridge to a lower-carbon future. But while gas burns cleaner than coal, gas operations leak methane, which has a more potent effect on atmospheric warming than carbon dioxide, though it makes up a smaller percentage of total greenhouse gas emissions.

Investors, policy makers and buyers of liquefied natural gas, known as LNG, are rethinking the fuel’s role in their energy mix …Those concerns, pronounced in Europe and increasingly in Asia, are a problem for LNG shippers, as some of their customers signal plans to ease gas consumption over time…Nearly every industry now faces some pressure to reduce its carbon footprint, as investors focus more on ESG—or environmental, social and governance—issues and push companies for trustworthy emissions data. But the pressure has become particularly acute for oil-and-gas companies, whose main products contribute directly to climate change.

The companies and researchers plan to test drones, specialized cameras that can see methane gas, and other technologies across about 100 wells in the Marcellus Shale in the northeast U.S., the Haynesville Shale of East Texas and Louisiana, and the Permian Basin of West Texas and New Mexico. EQT has said it would spend $20 million over the next few years to replace leaky pneumatic devices, which help move fluids from wells to production facilities and water tanks, with electric-drive valves, executives said. They expect that will cut about 80% of the company’s methane emissions. The company also began exclusively using electric-powered hydraulic fracturing equipment last year.

Excerpts from Collin Eaton Frackers, Shippers Eye Natural-Gas Leaks as Climate Change Concerns Mount, WSJ, Aug. 13, 2021

Wasted Energy: Methane Leakage in Permian Basin


The methane over the Permian Basin emitted by oil companies’ gas venting and flaring is double previous estimates, and represents a leakage rate about 60% higher than the national average from oil and gas fields, according to the research, which was publishe in the journal Science Advances. Methane is the primary component of natural gas. It also is a powerful driver of climate change that is 34 times more potent than carbon dioxide at warming the atmosphere over the span of a century. Eliminating methane pollution is essential to preventing the globe from warming more than 2 degrees Celsius (3.6 degrees Fahrenheit)—the primary target of the Paris climate accord, scientists say.

The researchers used satellite data gathered in 2018 and 2019 to measure and model methane escaping from gas fields in the Permian Basin, which stretches across public and private land in west Texas and southeastern New Mexico. The leaking and flaring of methane had a market value of nearly $250 million in April 2020.

Methane pollution is common in shale oil and gas fields such as those in the Permian Basin because energy companies vent and burn off excess natural gas when there are insufficient pipelines and processing equipment to bring the gas to market. About 30% of U.S. oil production occurs in the Permian Basin, and high levels of methane pollution have been recorded there in the past. Industry groups such as the Texas Methane and Flaring Coalition have criticized previous methane emission research. The coalition has repeatedly said (Environmental Defense Fund) EDF’s earlier Permian pollution data were exaggerated and flawed.

The Texas Railroad Commission, which regulates the oil and gas industry in Texas, allows companies to flare and vent their excess gas. The commission didn’t respond to a request for comment.

The use of satellites to measure methane is a different approach than the methods used by federal agencies, including the EPA, which base their estimates on expected leakage rates at oil and gas production equipment on the ground. A “top-down” approach to measuring methane using aircraft or satellite data almost always reveals higher levels of methane emissions than the EPA’s “bottom-up” approach.

Excerpts from Permian Oil Fields Leak Enough Methane for 7 Million Homes, Bloomberg Law, Apr. 22, 2020,

Hunting Down Polluters from Space

When scanning for emissions from a mud volcano in western Turkmenistan in January 2019, a satellite called Claire came across a large plume of methane drifting across the landscape. … The company operating the satellite, GHGSAT passed details via diplomats to officials in Turkmenistan, and after a few months the leaks stopped. This largely unknown incident illustrates two things: that satellites can play an important role in spotting leaks of greenhouse gases and, rather worryingly, that the extent of such leaks is often greatly underestimated. The data from Claire suggested the leak in Turkmenistan had been a big one…142,000 tonnes of methane. This made the Turkmenistani leak far bigger than the 97,000 tonnes of methane discharged over four months by a notorious blowout at a natural-gas storage facility in Aliso Canyon, California, in 2015, which is reckoned to have been the worst natural-gas leak yet recorded in America. There have been other big leaks, too…

The reason for concern is that although methane, the main constituent of natural gas, does not linger in the atmosphere for anywhere near as long as carbon dioxide does, it is a far more potent heat-trapping agent. About a quarter of man-made global warming is thought to be caused by methane. And between a fifth and a third of the methane involved is contributed by the oil and gas industry. Methane can be detected spectroscopically. Like other gases, it absorbs light at characteristic frequencies. With a spectrometer mounted on a satellite it is possible to analyse light reflected from Earth for signs of the gas. As with the satellites that carry them, spectrometers come in many shapes and sizes. Tropomi can also detect the spectral signs of other polluting gases, such as nitrogen dioxide, sulphur dioxide and carbon monoxide.

Other methane-hunting satellites are coming. These include one due for launch in 2022 by Methanesat, an affiliate of the Environmental Defence Fund, an American non-profit organisation. The 350kg satellite will cost $88m to build and put into orbit. It will scan an area of land 200km wide with a resolution of 1km by 1km. According to Methanesat, it will be the most sensitive to emission levels yet, being able to detect methane concentrations as low as two parts-per-billion. Data collected by the satellite will be publicly available.

Excerpts from The Methane Hunters, Economist, Feb. 1 2020