Latest News
An Unconventional Glut
Newly economic, widely distributed sources are shifting the balance of power in the world’s gas markets
Mar 11th 2010 | HOUSTON | From The Economist print edition
SOME time in 2014 natural gas will be condensed into liquid and loaded onto a tanker docked in Kitimat, on Canada’s Pacific coast, about 650km (400 miles) north-west of Vancouver. The ship will probably take its cargo to Asia. This proposed liquefied natural gas (LNG) plant, to be built by Apache Corporation, an American energy company, will not be North America’s first. Gas has been shipped from Alaska to Japan since 1969. But if it makes it past the planning stages, Kitimat LNG will be one of the continent’s most significant energy developments in decades.
Five years ago Kitimat was intended to be a point of import, not export, one of many terminals that would dot the coast of North America. There was good economic sense behind the rush. Local production of natural gas was waning, prices were surging and an energy-hungry America was worried about the lights going out.
Now North America has an unforeseen surfeit of natural gas. The United States’ purchases of LNG have dwindled. It has enough gas under its soil to inspire dreams of self-sufficiency. Other parts of the world may also be sitting on lots of gas. Those in the vanguard of this global gas revolution say it will transform the battle against carbon, threaten coal’s domination of electricity generation and, by dramatically reducing the power of exporters of oil and conventional gas, turn the geopolitics of energy on its head.
Deep in the heart of Texas
The source of America’s transformation lies in the Barnett Shale, an underground geological structure near Fort Worth, Texas. It was there that a small firm of wildcat drillers, Mitchell Energy, pioneered the application of two oilfield techniques, hydraulic fracturing (“fracing”, pronounced “fracking”) and horizontal drilling, to release natural gas trapped in hardy shale-rock formations. Fracing involves blasting a cocktail of chemicals and other materials into the rock to shatter it into thousands of pieces, creating cracks that allow the gas to seep to the well for extraction. A “proppant”, such as sand, stops the gas from escaping. Horizontal drilling allows the drill bit to penetrate the earth vertically before moving sideways for hundreds or thousands of metres.
These techniques have unlocked vast tracts of gas-bearing shale in America (see map). Geologists had always known of it, and Mitchell had been working on exploiting it since the early 1990s. But only as prices surged in recent years did such drilling become commercially viable. Since then, economies of scale and improvements in techniques have halved the production costs of shale gas, making it cheaper even than some conventional sources.
The Barnett Shale alone accounts for 7% of American gas supplies. Shale and other reservoirs once considered unexploitable (coal-bed methane and “tight gas”) now meet half the country’s demand. New shale prospects are sprinkled across North America, from Texas to British Columbia. One authority says supplies will last 100 years; many think that is conservative. In 2008 Russia was the world’s biggest gas producer (see chart 1); last year, with output of more than 600 billion cubic metres, America probably overhauled it. North American gas prices have slumped from more than $13 per million British thermal units in mid-2008 to less than $5. The “unconventional”—tricky and expensive, in the language of the oil industry—has become conventional.
The availability of abundant reserves in North America contrasts with the narrowing of Western firms’ oil opportunities elsewhere in recent years. Politics was largely to blame, as surging commodity prices emboldened resource-rich countries such as Russia and Venezuela to restrict foreign access to their hydrocarbons. “Everyone would like to find more oil,” says Richard Herbert, an executive at Talisman Energy, a Canadian firm using a conventional North Sea oil business to finance heavy investment in North American shale. “The problem is, where do you go? It’s either in deep water or in countries that aren’t accessible.” This is forcing big oil companies to get gassier.
The oil majors watched from the sidelines as more entrepreneurial drillers proved shale’s viability. Now they want to join in. In December Exxon Mobil paid $41 billion for XTO, a “pure-play” gas firm with a large shale business. BP, Statoil, Total and others are sniffing around the North American gas patch, signing joint ventures with producers such as Chesapeake Energy. A wave of consolidation is likely in the coming months, as gas prices remain low, the drillers seek capital and the majors hunt for the choicest acreage.
Shale is almost ubiquitous, so in theory North America’s success can be repeated elsewhere. How plentiful unconventional resources might be in other regions, however, is far from established. The International Energy Agency (IEA) estimates the global total to be 921 trillion cubic metres (see chart 2), more than five times proven conventional reserves. Some think there is far more. No one will really know until companies explore and drill.
The drillers are already arriving in Europe and China, which are both expected to import increasing amounts of gas—and are therefore keen to produce their own. China has set its companies a target of producing 30 billion cubic metres a year from shale, equivalent to almost half the country’s demand in 2008. Several foreign firms, including Shell, are already scouring Chinese shales. After a meeting between the American and Chinese presidents last November, the White House announced a “US-China shale gas initiative”: American knowledge in exchange for investment opportunities. The IEA says China and India could have “large” reserves, far greater than the conventional resource.
Exploration is also under way in Austria, Germany, Hungary, Poland and other European countries. The oil industry’s minnows led this scramble, but now the big firms are arriving too. Austria’s OMV is working on a promising basin near Vienna. Exxon Mobil is drilling in Germany. Talisman recently signed a deal to explore for shale in Poland. ConocoPhillips is already there. The first results from wells being drilled in Poland, in what some analysts believe is a shale formation similar to Barnett, should be released this year.
No one expects production of shale gas in Europe to make a material difference to the continent’s supply for at least a decade. But the explorers in China and Europe present a long-term worry for those who have bet on exporting to these markets. Gazprom, Russia’s gas giant, is the company most exposed to this threat, because its strategy relies on developing large—and costly—gasfields in inhospitable places. But Australia, Qatar and other exporters also face a shift in the basics of their business.
Choked
These producers are already getting a taste of the global gas glut. Almost in tandem with the surge in American production, recession brought a slump in world demand. The IEA says consumption in 2009 fell by 3%. In Europe, the drop was 7%. Consumption in the European Union will grow marginally if at all this year and will not be sufficient to clear an overhang of supplies, contracted through take-or-pay agreements signed in the dash for gas of the past decade. IHS Global Insight, a consultancy, reckons that the excess could amount to 110 billion cubic metres this year, almost a quarter of the EU’s demand in 2008.
The glut has been exacerbated by the suddenly greater availability of LNG. Importers with the infrastructure to receive and regasify LNG can now easily tap the global market for spot cargoes. This is partly a product of the recession, which dampened demand from Japan and South Korea, the leading LNG buyers. But another cause is that many exporters, not least Qatar, the world’s LNG powerhouse, spent the past decade ramping up supplies aimed at the American market. That now looks like a blunder.
America is still taking some of this LNG, but the exporters’ bonanza is over before it ever really began. “You’ll always find a buyer in North America,” says Frank Harris, an analyst at Wood Mackenzie, a consultancy, “but you might not like the price.” And LNG will grow increasingly abundant as new projects due to come on stream this year add another 80m tonnes to annual supply, almost 50% more than in 2008.
Qatar’s low production costs mean it can still make money, even in North America. Others cannot. In February, for example, Gazprom postponed its Shtokman gasfield project by three years because of the change in the market. Some of the gas from that field, in the Barents Sea, was to be exported to America. But Shtokman’s gas will be costly, because the field is complex and its location makes it one of the world’s most difficult energy projects to execute. Some analysts now wonder whether gas will ever flow from Shtokman.
Back to Latest News