Gulf Oil Spill
This image taken from video provided by BP PLC at 15:57 CDT, shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwat... This image taken from video provided by BP PLC at 15:57 CDT, shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwater Horizon oil spill in the Gulf of Mexico Thursday, July 15, 2010. BP finally choked off the flow of oil into the Gulf of Mexico on Thursday _ 85 days and up to 184 million gallons after the crisis unfolded _ then began a tense 48 hours of watching to see whether the capped-off well would hold or blow a new leak. Engineers will monitor pressure gauges and watch for signs of leaks elsewhere in the well. (AP Photo/BP PLC) NO SALES
Gulf Oil Spill
This combo made from images taken from video provided by BP PLC shows oil flowing from two of three valves on the new 75-ton cap atop the site of the... This combo made from images taken from video provided by BP PLC shows oil flowing from two of three valves on the new 75-ton cap atop the site of the Deepwater Horizon oil spill in the Gulf of Mexico at 17:04 CDT Wednesday, July 14, 2010, left, and the top of the cap at 17:56 CDT on Thursday, July 15, minutes after the flow of oil was choked off. BP vice president Kent Wells said the oil stopped flowing into the water at 14:25 CDT after engineers gradually dialed back the amount of crude escaping through the last of three vents in the cap, an 18-foot-high metal stack of pipes and valves.(AP Photo/BP PLC) NO SALES
Gulf Oil Spill
This image taken from video provided by BP PLC at 14:27 CDT, shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwate... This image taken from video provided by BP PLC at 14:27 CDT, shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwater Horizon oil spill in the Gulf of Mexico Thursday, July 15, 2010. BP vice president Kent Wells said the oil stopped flowing into the water at 14:25 CDT after engineers gradually dialed back the amount of crude escaping through the last of three vents in the cap, an 18-foot-high metal stack of pipes and valves. (AP Photo/BP PLC) NO SALES
Gulf Oil Spill
This image taken from video provided by BP PLC at 17:56 CDT shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwater... This image taken from video provided by BP PLC at 17:56 CDT shows that oil has stopped flowing from the new 75-ton cap atop the site of the Deepwater Horizon oil spill in the Gulf of Mexico Thursday, July 15, 2010. BP finally choked off the flow of oil into the Gulf of Mexico on Thursday _ 85 days and up to 184 million gallons after the crisis unfolded _ then began a tense 48 hours of watching to see whether the capped-off well would hold or blow a new leak. Engineers will monitor pressure gauges and watch for signs of leaks elsewhere in the well. (AP Photo/BP PLC) NO SALES
Gulf Oil Spill
In this combo made from images taken from video provided by BP PLC, oil flows from two of three valves on the 75-ton cap atop the site of the Deepwat... In this combo made from images taken from video provided by BP PLC, oil flows from two of three valves on the 75-ton cap atop the site of the Deepwater Horizon oil spill in the Gulf of Mexico at 17:04 CDT Wednesday, July 14, 2010, left, oil flows from one of three valves at 22:25 CDT Wednesday, July 14, 2010, center, and oil no longer flows from the cap at 15:57 CDT Thursday, July 15, 2010. (AP Photo/BP PLC) NO SALES
BP says it is encouraged by results so far from its leaking oil well in the Gulf of Mexico.
Kent Wells, BP PLC vice president, says pressure is good so far inside the new cap.
He said there is no sign of any new leaks underground.
Engineers are looking for high pressure, because low pressure is a sign of another leak.
