Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. BP Begins 'Static Kill' Operation VOA News 03 August 2010 The Blue Dolphin (l) and the HOS Centerline, the ships supplying the mud for the static kill operation on the Helix Q4000, delivering the mud through hoses at the site of the Deepwater Horizon Oil S Photo: AP The Blue Dolphin (l) and the HOS Centerline, the ships supplying the mud for the static kill operation on the Helix Q4000, delivering the mud through hoses at the site of the Deepwater Horizon Oil Spill in Gulf of Mexico, 03 Aug 2010 Energy giant BP says it has begun its so-called "static kill" operation to permanently plug its ruptured oil well in the Gulf of Mexico. BP made the announcement Tuesday, saying it made its decision following an earlier test to gauge how well the procedure might work. The operation involves pumping heavy mud into the well, and eventually sealing it permanently with cement. The government's oil response chief, retired Coast Guard Admiral Thad Allen, has said this procedure, combined with relief wells that BP is drilling, should permanently plug the leak. If all goes well, the damaged well could be sealed by Wednesday or Thursday. The danger in carrying out the "static kill" is that pressure inside the well could become too great and cause more leaks. The operation is being watched with cameras attached to underwater robots.. Allen says engineers will closely monitor the well as the operation takes place. Authorities have said 4.9 million barrels of oil leaked from the well after it ruptured April 20 until a temporary cap was installed in mid-July. But officials said not all of this oil flowed into the Gulf. They said containment activities conducted by BP under U.S. government direction captured approximately 800,000 barrels of oil prior to the capping. The leak has caused environmental and economic damage in the Gulf, angering and creating hardship for people who rely on the waters for their livelihoods. BP is facing about $30 billion in cleanup costs. The company says it will sell its Colombian business to a consortium of Ecopetrol, Colombia's national oil company, and the Canadian company Talisman for $1.9 billion. Some information for this report was provided by AP, AFP and Reuters. .