WASHINGTON — Several days before the explosion on the Deepwater Horizon oil rig, BP officials chose, partly for financial reasons, to use a type of casing for the well that the company knew was the ...

BP chose to use an oil well casing that the company knew was not as safe as a second approach but was considered the better "economic" option, according to a BP document given to The New York Times by ...

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 ...

Conoco Inc., Houston and Tesco Corp., Calgary, commercialized the Casing-Drilling process by signing a multiyear, multiwell contract, which they say is their first for Casing-Drilling services. The ...

WASHINGTON – WASHINGTON (AP) — The CEO of the company that owned the oil drilling rig that exploded in the Gulf of Mexico says the accident was caused by a failure of its cementing, casing or perhaps ...

BP hoped to drill the well in 51 days for $96 million. But things ran way behind schedule and over budget, reports CBS News investigative correspondent Sharyl Attkisson. Leasing the Deepwater Horizon ...

ConocoPhillips, Tesco Corp., and Schlumberger Ltd. successfully tested rotary-steerable casing drilling in South Texas, combining directional drilling technology with casing drilling. "Each of these ...

KENNER, La. — Government investigators on Thursday pressed a BP official who supervised the Deepwater Horizon about whether the company took shortcuts to save money and time by selecting riskier ...

ABOARD THE DEVELOPMENT DRILLER II — The men who spend weeks at a time aboard these deepwater rigs are accustomed to drilling in relative solitude out in the waters of the Gulf of Mexico. But that's ...

Builders of the U.K.’s tallest skyscraper, London’s Shard, will save valuable time by excavating its three-floor basement while slipforming the core. A novel machine is now at work, plunging columns ...