To what depth of water is a semisubmersible rig capable of drilling in?

• A. ~1500 ft (460 m)
• B. ~10000 ft (3200 m)
• C. ~3000 ft (900 m)
• D. ~7500 ft (2200 m)

Answer: (D)

Semisubmersible rigs stay stable in rough seas by using a submerged hull and ballast, which allows precise positioning and supports a long drill riser. This design enables drilling in deeper water than many other offshore rigs. In practice, a typical semisubmersible rig can drill in water depths around 7,500 feet (about 2,200 meters). Among the options, that depth best matches the standard deepwater capability of a semisubmersible rig, while the shallower numbers are within reach of less capable setups and the deepest option is commonly beyond a conventional semisubmersible’s routine range. So the depth around 7,500 feet is the correct fit.