BP is expected to finally attempt its so-called static kill to permanently seal the well at the bottom of the Gulf of Mexico this week.
Before the well was capped last month, it gushed somewhere between 94 and 184 million gallons of oil into the water, according to The Associated Press.
The New York Times reports that the company will wrap up testing on Monday, and could start pumping heavy mud and cement into the well as early as Tuesday.
Eventually, the company will use two relief wells to expedite the procedure, according to the Times. So far, the company's efforts to permanently seal the well have been beset by delays. Last month, the procedure was stalled due to a tropical storm system that moved through the Gulf of Mexico.