So far, officials have triggered a safety valve to slow the release of natural gas from the well, but the well was still leaking as of Sunday afternoon. The oil producer had retained Halliburton Co's (HAL.N) well control specialists to kill the well, the spokesman said.
Shares in BP were down 2.3% at 460.15 pence Tuesday.
BP plc is still working to secure a well in Alaska's Prudhoe Bay field that began leaking hydrocarbons last Friday. Fortunately, there were no reports on the matter of injuries or any kind of unintended harm towards the wildlife of Alaska.
The Environmental Protection Agency says a crack in a BP wellhead near Deadhorse sent up mist of crude oil Friday before it froze over and an initial leak stopped.
"Whenever you have an out-of-control well like this, that means something very serious went wrong", Lois Epstein, Arctic Program Director for environmentalist group The Wilderness Society, told Bloomberg.
An earlier report by the Alaska Department of Environmental Conservation said pressure in the well had caused the well assembly and equipment to "jack up", or rise, three to four feet, hampering efforts to shut off the gas leak.
The North Slope is home to the biggest legacy conventional oil fields in the United States and has recently seen a revival after energy firms made a decision to try and extend these fields' productive lives and possibly even tap hitherto undiscovered deposits. The nearest local community, Nuiqsut, located about 50 mi west, has been notified. The well is operated by a London-based BP energy company. By Sunday night, the well had settled about 11 in.
The total amount of oil spilled and whether the crude affected the snow-covered tundra nearby isn't yet clear, though authorities have expressed confidence the crude contamination is contained with a gravel area directly surrounding the well site. Candice Bressler, a state spokeswoman, referred production questions to the company.
Alaskan North Slope crude was valued at $1.80 a barrel over US benchmark West Texas Intermediate on Monday, according to data compiled by Bloomberg.