The U.S. declared one of Russia’s largest offshore oil and natural gas fields off limits to American tools and expertise, potentially disrupting Royal Dutch Shell Plc’s plans to liquefy the fossil fuel for export.

U.S. Rig Count is up 10 rigs from last week to 884, with oil rigs up 6 to 670, gas rigs up 4 to 213, and miscellaneous rigs unchanged at 1. U.S. Rig Count is down 1,024 rigs from last year at 1,908, with oil rigs down 918, gas rigs down 103, and miscellaneous rigs down 3. The U.S. Offshore rig count is 38, up 4 rigs from last week, and down 24 rigs year over year.

The total U.S. trade deficit peaked at $762 billion in 2006, prior to the surge in U.S. oil and natural gas production. By 2014, it had dropped to $508 billion.

The six nations that make up Central Asia hold at least 11% of the world’s proven natural gas reserves, as well as substantial deposits of oil and coal, according to data compiled by BP. Afghanistan says its mineral wealth is valued at $1 trillion to $3 trillion.

“Russia sits on 25% of the world’s gas reserves and is very, very close to markets that we are very familiar with,” Van Beurden said July 30, on the sidelines of the company’s earnings presentation. Shell is also pushing “to see how we can work with Gazprom internationally.”

The Arctic has become a theatre for rival claims over a sea floor believed to be rich in minerals, oil and gas.

The United States is now the world’s leading producer of natural gas. With LNG exports scheduled to begin within the next six months, America’s oil and gas renaissance will soon provide both substantial domestic and foreign economic benefits. If US LNG can be imported into regions where there is only a single, monopolistic producer, then strategic benefits could accrue as well.

In the medium term, Iran’s gas will not be able to compete with the Russian gas in the European market.

Seven months after Russia made the latest changes to its oil tax regime, the industry seems to have been able to adapt more easily to the new landscape than had been expected at the turn of the year. However, market experts have warned that the government must consider more fiscal reforms as the current system is continuing to distort the sector. The so-called tax maneuver, which includes a phased reduction in export duty for crude and oil products over 2015-2017 and an increase in oil extraction tax, was introduced in January.

Oil and gas production from the North Sea is expected to increase for the first time in 15 years despite a global slump in the price of crude and hundreds of job losses in the industry.