“The Kurdistan deal with Turkey is a huge violation against the Iraqi Constitution because they didn’t make the deal with the coordination of the central government,” said Ali Dhari, the deputy chairman of the Iraqi Parliament’s oil and gas committee. “This means the stealing of the Iraqi wealth, and we will not allow it.”

The oil accords with Turkey, potentially worth billions of dollars, are part of a broader effort by Iraqi Kurds in recent years to cut their own energy deals — including exploration agreements with foreign companies like Exxon Mobil, Chevron and Gazprom — that sidelined the central government. The Kurds, and the Turks, say they will pay Baghdad its fair share. But officials in the capital have long claimed such arrangements are illegal.

The controversy is in part the unfinished business of the American occupation of Iraq. The failure of the Iraqi government to pass a national oil law, one of the benchmarks set by President George W. Bush when he announced the United States troop “surge” in 2007, has left Baghdad and Erbil, the Kurdish capital, in a perpetual feud over how to divide profits and who has the authority to make agreements with international oil companies.

Qasim Mishkhati, a Kurdish member of Parliament’s oil and gas committee, insisted that the wealth from the deals would be shared with the rest of Iraq, and that it was the responsibility of the regional government in the north to find international markets for its oil resources. “Kurdistan is working to increase the national income so that all Iraqis can enjoy better services and more wealth,” he said.

Although the mechanism for such payments has not been worked out, the Turks and the Kurds have indicated that they would adhere to the existing proportions for the division of national revenue, meaning Baghdad would receive 83 percent of the net profit and the Kurds would keep 17 percent.