[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 ...

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 ...

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 ...