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Russian scientists find 7,000 Siberian hills possibly filled with explosive gas. I wonder if it makes business sense to harvest these explosive gases and turn them into liquid natural gas for later use, or to build power plants on the spot and extract energy out of no man's land in the form of electricity instead of LNG.

If oil and coal prices continue to rise, at what point is it profitable to collect these gases that are already leaking into the atmosphere?

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  • I suspect once a pingo has formed, it's too dangerous to do anything. And if it hasn't formed yet, then there is little point in trying to extract gas. – THelper♦ Jun 22 '17 at 18:16
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    This is an age of robots and unmanned vehicles and satellite remote sensing. If that gas is bound to leak within the next 50 years, it is better to extract it now to replace the coal and oil that would otherwise stay put for thousands of years. – George Chen Jun 24 '17 at 15:01
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Extracting natural gas from pingos is likely not cost-effective.

From the article cited in the question:

A count of 7,000 pingos, alternative included, was likely an underestimate, in Romanovsky’s view. Across the entire Arctic permafrost, he estimated there may be as many as 100,000. But he could not say how many fell into which category — a symptom, in part, of the relatively poor resolution of imaging satellites that travel above the tundra.

While this sounds like a lot, the "alternative pingos" are the ones which contain methane (the primary component of natural gas) in sufficient concentrations to be considered explosive. They are a tenth the size of the "traditional" pingos, measuring 50 to 100 meters across.

The article also says that only a "handful" of these alternative pingos have been found, and only as craters -- after the bubble burst.

Thus, several factors combine to indicate that extraction of natural gas from alternative pingos would not be cost-effective:

  • The quantity and distribution is not well known
  • The pingos must be found before they have burst
  • Each pingo is small, and only yields one harvest
  • They are located in remote regions with limited infrastructure

Shale gas productivity is up, and costs are down.

Even if a path to cost-effective extraction of methane from pingos could be proposed, there is little incentive to spend money in this direction, as other sources currently exist -- namely, shale gas plays in North America.

Production from shale gas is increasing rapidly:

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...while at the same time, costs over the last several years are declining:

enter image description here

A possible "next" source of natural gas -- methane clathrates -- is already being explored.

From the BBC:

China has for the first time extracted gas from an ice-like substance under the South China Sea considered key to future global energy supply.

Methane clathrates (also called methane hydrates) are frozen deposits of natural gas mixed with water which are located throughout the oceans, typically at or near continental shelves. It is estimated that natural gas stored in these deposits is equivalent to ten times the quantity in on-shore shale gas deposits.

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