Transocean Historical Timeline

During the 2010s, Transocean continued to set world deepwater drilling records while upgrading its high-specification fleet.

  • In 2010, a reminder of the over-arching importance of safety came as the Macondo tragedy brought the loss of 11 crewmembers on the Deepwater Horizon on April 20 in the U.S. Gulf of Mexico. We will never forget our lost colleagues.
  • In 2011, the Dhirubhai Deepwater KG2 set the world water-depth record at 10,194 feet of water (3,107 meters) while working for Reliance in India.
  • In 2012, the company announced plans to construct four, high-specification, ultra-deepwater drillships, backed by drilling contracts for the four rigs, each with a 10-year term. The 40 rig years represents the largest contracted period in the industry. The 40 rig years represents the largest contracted period signed at one time in the history of the industry. The drillships when completed will provide the most advanced offshore drilling technology available.
  • In 2012, the company closed on the sale of 38 shallow-water drilling rigs to Shelf Drilling Holdings Ltd., further repositioning the company as a more focused operator of high-specification drilling rigs.
  • In July 2013, India was the scene of another world record as the Dhirubhai Deepwater KG1 ultra-deepwater drillship (shown in photo) set the world water-depth record at 10,411 feet (3,174 meters) off the East Coast of the country while working for ONGC. That mark surpassed the prior record of 10,385 feet (3,165 meters) of water also achieved by the KG1 in February 2013.