Deepwater drilling, or Deep well drilling, is the process of oil and gas exploration. There are approximately 600 deepwater wells in the Gulf of Mexico with depths of more than 500 feet. This is an enormous problem when a well needs fixing.
It has been technologically and economically infeasible for many years, but with rising oil prices, more companies are investing in this area. Major companies working in this sector include Diamond Offshore, TransOcean, Geoservices and Schlumberger.
There are basically two kinds of mobile deepwater drilling rigs: semi-submersible drilling rigs and drillships. Drilling can also be performed from a fixed-position installation such as a floating spar platform (or tension-leg platform).
- “Not all oil is accessible on land or in shallow water. You can find some oil deposits buried deep under the ocean floor.” …Using sonic equipment, oil companies determine the drilling sites most likely to produce oil. Then they use a mobile offshore drilling unit (MODU) to dig the initial well. Some units are converted into production rigs, meaning they switch from drilling for oil to capturing oil once it's found. Most of the time, the oil company will replace the MODU with a more permanent oil production rig to capture oil.” …The MODU's job is to drill down into the ocean's floor to find oil deposits. The part of the drill that extends below the deck and through the water is called the riser. The riser allows for drilling fluids to move between the floor and the rig. Engineers lower a drill string -- a series of pipes designed to drill down to the oil deposit -- through the riser.” 
- “The expansion of deepwater drilling is happening despite accidents in offshore fields…”
- “…Despite the risks, the deepwater drilling trend is spreading in the Mediterranean and off the coast of East Africa after a string of huge discoveries of natural gas.”
- “The reason for the resumption of such drilling, analyst say, is continuing high demand for energy worldwide.”
- Offshore drilling, Well drilling, Shallow water drilling, Extraction of petroleum, Age of Oil, Fossil fuel drilling, Energy development, Hubbert peak theory
- 2010 United States deepwater drilling moratorium, Submersible pump, IntelliServ, Petroleum industry in Mexico
- Michael Klare, Jason Leopold
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- Deep Well Drilling: The Principles and Practices of Deep Well Drilling, and a Hand Book of Useful Information for the Well Driller. By Walter Henry Jeffery. W. H. Jeffery Company, 1921.
- Tankersley, Jim (2010-06-19). "A closer look at deep-water drilling". Los Angeles Times.
- "The Deepwater Ultra Deepwater Exploration Production Market 2013-2023". visiongain. January 2, 2013. Retrieved 21 September 2013.
- "The Deepwater Ultra Deepwater Market 2011-2021". visiongain. May 31, 2011. Retrieved 21 September 2013.
- Freudenrich, Ph.D, Craig; Strickland, Jonathan. "How Oil Drilling Works". Retrieved 21 September 2013.
- Krauss, Clifford; Broder, John M. (2012-03-04). "Deepwater Oil Drilling Picks Up Again as BP Disaster Fades". New York Times.
- Deepwater Drilling: How It Works | Chevron | Video. chevron.com.
- HowStuffWorks "Ultra Deep Water Oil Drilling". science.howstuffworks.com.
- Rigzone - Deepwater Gulf of Mexico Drilling Activity to Keep Rising. rigzone.com. April 24, 2013.