[This story was updated at 10 p.m. ET on July 12.] After days of preparation, BP's effort to replace the loose-fitting cap that has been collecting oil for the last few weeks with a sealing cap ...

A Transocean Ltd. Development Driller III rig works to drill a relief well to plug the damaged Macondo well; Derick E. Hingle/Bloomberg via Getty Images Updated 12:46 p.m. ET | BP said Sunday morning ...

Getting your Trinity Audio player ready... BP lowered a new, tight-fitting containment cap over its renegade well in the Gulf of Mexico late Monday, a move that may give the company the ability to ...

BP engineers on Thursday removed the cap that first stopped the blown-out Macondo oil well from spewing oil and gas back in mid-July. The removal brings BP one step closer to permanently killing the ...

Once a well has been drilled, if it is to become a production well, the well must undergo completion. While drilling a well cuts through the rock formations and allows drilling engineers to reach the ...

NEW ORLEANS With BP making progress in attaching a new cap on a runaway well in the Gulf of Mexico, the company prepared on Monday to test whether the gusher could be stopped completely. Doug Suttles, ...

If you think threading a needle is difficult, imagine drilling into an 18-centimetre-wide cylinder 5500 metres below the sea floor. That is the challenge facing BP engineers as they attempt to drill ...

NEW ORLEANS BP said Thursday that it had capped its hemorrhaging well, at least temporarily, marking the first time in 86 days that oil was not gushing into the Gulf of Mexico. Oil stopped flowing ...

Whether a well taps water just below the ground or hundreds of feet deep, its location on top of the ground is a crucial safety factor. A well downhill from a livestock yard,a leaking tank or a ...