Offshore oil rigs are some of the largest structures on the ocean, ... which was drilling in water over 4,100 feet deep before it's infamous 2010 accident.

Offshore drilling has come a long way since the wharf-based rigs of the late 1800s, giving oil companies an arsenal of options for tapping deep-sea deposits. Skip to content Menu ...

Oil rigs achieve this by displacing water with enough buoyant force to keep it all afloat. The rigs are able to displace water by using massive, hollow legs that serve as pontoons.

Demand for top-quality deep-water rigs, specifically drillships and semi-submersibles, ... provided their agreements with oil and gas company clients offer a healthy dayrate and a long-contract term.

Deep-water drilling's ride against the tide. Despite oil spill and 6-month moratorium, trend likely to continue. By Steven Mufson. June 21, 2010 at 8:00 p.m. EDT ...

“The newer rigs are very different to these ‘old school’ fixed-jacket style rigs; they don’t have anywhere near as much structure.” Macreadie and colleagues highlight existing research on the ...

Nearly a dozen people are missing and presumed dead after the huge explosion aboard a deep-water oil rig in the Gulf of Mexico. The accident provides further evidence that despite advances in ...

New rig installed in deep water off Angola. ... Three drill centers are in water 1,300-1,800 ft deep, ... (Table 1). Dalia’s oil is about 21° API gravity, while Girassol’s is 32° API gravity.

Today, more than 50 percent of Gulf oil production comes from ultra-deep wells drilled in 4,500 feet or more of water, compared with about 4,000 feet for Deepwater Horizon.

Modern offshore oil rigs are engineering wonders designed to accommodate massive crews and operate in some of the most ... which was drilling in water over 4,100 feet deep before it's infamous ...