Dolphin Drilling
Corporate brand
UnclaimedNorwegian-origin offshore drilling contractor operating a fleet of semi-submersible drilling rigs.
Last updated August 31, 2026
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Overview
Dolphin Drilling is an offshore drilling contractor with Norwegian roots and an international corporate headquarters in Aberdeen, Scotland. Its principal operating subsidiary, Dolphin Drilling AS, is based in Sandnes, Norway. The company provides offshore drilling services through semi-submersible rigs designed for exploration, appraisal, development and related well operations in offshore environments. The business was established in 1965 as A/S Aker Drilling Company Ltd. In 1976, Fred. Olsen & Co. acquired Aker Drilling Services and renamed the business Dolphin Services A/S. The Dolphin organization subsequently became the basis for Fred. Olsen Energy ASA, formed in 1997. That company was listed on the Oslo Stock Exchange and operated across offshore drilling and related subsea and well-services activities. Over time, some non-core activities were separated: its remotely operated vehicle division was sold in 1998 to Stolt Comex Seaways, now associated with Subsea 7, while Dolphin Well Services AS was sold in 2003 to PSL Energy Services Limited. The company’s identity became more directly associated with the Dolphin name when Fred. Olsen Energy ASA was renamed Dolphin Drilling ASA in December 2018. The company entered bankruptcy proceedings in June 2019. Following a debt restructuring, SVP Global, which had acquired more than 90 percent of the company’s debt, transferred the operating subsidiaries into a new Jersey-registered holding company, Dolphin Drilling Holdings Limited. The international headquarters were subsequently moved from Oslo to Aberdeen, while the Norwegian operating organization remained centered in Sandnes. Dolphin Drilling is particularly associated with the Byford Dolphin, a semi-submersible drilling rig involved in a fatal explosive decompression accident in 1983. Five people died in the incident. The accident is a significant part of the rig’s historical record and of public references to the company, although Dolphin Drilling’s core business is the provision of drilling services rather than the manufacture of drilling equipment. The company’s fleet has included the deepwater semi-submersible Blackford Dolphin, rated for operations in water depths of up to 7,000 feet, and the mid-water semi-submersibles Borgland Dolphin and Paul B. Loyd Jr. Fleet utilization, contract awards, rig reactivations and ownership capitalization are therefore central to its commercial profile. In 2022, Cyprus-headquartered oilfield-services company S.D. Standard ETC announced the acquisition of a 25 percent stake as part of a reported $10 million transaction. In March 2025, S.D. Standard ETC announced and completed the disposal of its remaining reported 17.1 percent interest through a private placement. The same period saw increased holdings by Svelland Capital and B.O. Steen Shipping, while SVP Global remained a substantial shareholder according to the supplied reference. Dolphin Drilling’s positioning is that of a specialist offshore drilling-services provider with a focused semi-submersible fleet, rather than an integrated oil company. Its commercial exposure is tied to offshore exploration and production spending, rig day rates, contract duration, safety performance, asset condition, financing and the cyclical supply-demand balance in the drilling market.
History
Dolphin Drilling traces its origins to A/S Aker Drilling Company Ltd., established in 1965. Fred. Olsen & Co. acquired Aker Drilling Services in 1976 and renamed it Dolphin Services A/S. The company developed within the Fred. Olsen corporate sphere and became the foundation for Fred. Olsen Energy ASA, which was formed in 1997 and listed on the Oslo Stock Exchange. During the Fred. Olsen Energy period, the group operated offshore drilling assets and related service businesses. Its remotely operated vehicle division was sold in 1998 to Stolt Comex Seaways, now associated with Subsea 7. Dolphin Well Services AS was sold in 2003 to PSL Energy Services Limited. These transactions narrowed the group’s activities and separated certain subsea and well-services operations from the drilling business. In December 2018, Fred. Olsen Energy ASA was renamed Dolphin Drilling ASA. The company subsequently encountered financial distress and filed for bankruptcy in June 2019. SVP Global acquired more than 90 percent of the company’s debt and, following the restructuring, transferred the operating subsidiaries to Dolphin Drilling Holdings Limited, a newly used Jersey-registered holding company. The company’s international headquarters were moved to Aberdeen, Scotland, while Dolphin Drilling AS continued as the principal Norwegian operating subsidiary in Sandnes. The company had previously been headquartered in Oslo. Dolphin Drilling’s operating identity is centered on semi-submersible offshore drilling rigs. The fleet described in the supplied reference material includes Blackford Dolphin, a deepwater rig with a stated water-depth capability of 7,000 feet, together with the mid-water rigs Borgland Dolphin and Paul B. Loyd Jr. These assets support the company’s role as a contractor to offshore oil and gas operators, with commercial performance dependent on drilling contracts, rig availability, market day rates and the broader offshore investment cycle. The Byford Dolphin is an important part of the company’s historical record. In 1983, the rig was involved in an explosive decompression accident that killed five people. The incident is frequently cited in accounts of the rig and Dolphin Drilling, and constitutes a major safety-related episode associated with the brand. Ownership changed again in the 2020s. In May 2022, S.D. Standard ETC, an oilfield-services company headquartered in Cyprus, announced that it had acquired a 25 percent interest in Dolphin Drilling as part of a reported US$10 million deal. In March 2025, S.D. Standard ETC announced its intention to sell its entire reported 17.1 percent stake. The disposal was completed on March 4 through the sale of 49,784,706 shares at NOK 1.10 per share, for approximately NOK 55 million. On March 13, reported holdings of Svelland Capital and B.O. Steen Shipping had increased to 34 percent and 10 percent respectively, while SVP Global retained approximately 24 percent according to the supplied source material. These transactions illustrate the continuing recapitalization and shareholder reorganization of the post-2019 business.
- 2025
Shareholder reorganization
[1]S.D. Standard ETC exited its reported stake, while other investors increased their holdings.
- 2022
S.D. Standard ETC investment
[1]S.D. Standard ETC announced a 25 percent investment in Dolphin Drilling as part of a reported US$10 million transaction.
- 2019
Bankruptcy and restructuring
[1]The company filed for bankruptcy, after which its operating subsidiaries were transferred to Dolphin Drilling Holdings Limited.
- 2018
Corporate name changed to Dolphin Drilling ASA
[1]Fred. Olsen Energy ASA was renamed Dolphin Drilling ASA in December.
- 2003
Dolphin Well Services sold
[1]Dolphin Well Services AS was sold to PSL Energy Services Limited.
- 1998
ROV division sold
[1]The remotely operated vehicle division was sold to Stolt Comex Seaways.
- 1997
Fred. Olsen Energy formed
[1]Fred. Olsen Energy ASA was formed from the Dolphin Services business and later listed on the Oslo Stock Exchange.
- 1983
Byford Dolphin accident
[1]An explosive decompression incident on the Byford Dolphin killed five people.
- 1976
Dolphin Services name adopted
[1]Fred. Olsen & Co. acquired Aker Drilling Services and renamed it Dolphin Services A/S.
- 1965
Aker Drilling established
[1]A/S Aker Drilling Company Ltd., the predecessor of Dolphin Drilling, was established.
Products and positioning
A focused offshore drilling contractor operating semi-submersible rigs for deepwater and mid-water well services, with Norwegian operating heritage and an Aberdeen-based international headquarters.
Deepwater semi-submersible drilling rig
Blackford Dolphin
Blackford Dolphin is a deepwater semi-submersible drilling rig associated with Dolphin Drilling’s fleet. The supplied reference describes it as capable of operating in water depths of up to 7,000 feet. Its role is to support offshore drilling campaigns for exploration, appraisal and development wells, subject to contract availability and technical readiness.
Mid-water semi-submersible drilling rig
Borgland Dolphin
Borgland Dolphin is a mid-water semi-submersible drilling rig listed among Dolphin Drilling’s owned and operated fleet. It is intended for offshore well operations in water depths below the deepwater range, with deployment dependent on customer contracts, regulatory approvals, maintenance and market conditions.
Mid-water semi-submersible drilling rig
Paul B. Loyd Jr.
Paul B. Loyd Jr. is a mid-water semi-submersible drilling rig associated with Dolphin Drilling. The rig forms part of the company’s focused offshore drilling portfolio and can be used for contracted well operations where its technical specifications and commercial availability match an operator’s requirements.
Controversies
Brand decisions
2025
Complete S.D. Standard ETC stake saleM&ABackground
S.D. Standard ETC announced that it intended to exit its entire reported 17.1 percent holding in Dolphin Drilling.
Action taken
On March 4, 2025, it sold 49,784,706 shares at NOK 1.10 per share through a private placement.
Aftermath
The sale reportedly generated approximately NOK 55 million and was followed by increased holdings from Svelland Capital and B.O. Steen Shipping.
Private-placement proceeds. Approximately NOK 55 million (March 4, 2025)
2022
Sell a minority stake to S.D. Standard ETCM&ABackground
The post-restructuring company sought capital and shareholder participation while operating in the offshore drilling market.
Action taken
S.D. Standard ETC acquired a reported 25 percent stake in Dolphin Drilling as part of a reported US$10 million transaction.
Aftermath
S.D. Standard ETC later announced and completed the disposal of its remaining reported interest in March 2025.
Reported transaction value. US$10 million (May 2022)
2019
Transfer operating subsidiaries after debt restructuringStrategyBackground
Dolphin Drilling ASA filed for bankruptcy amid financial distress. SVP Global acquired more than 90 percent of the company’s debt.
Action taken
The operating subsidiaries were transferred to Dolphin Drilling Holdings Limited, a Jersey-registered holding company, and the international headquarters moved to Aberdeen.
Aftermath
The post-restructuring business continued with Dolphin Drilling AS as its main Norwegian operating subsidiary.
2018
Rename Fred. Olsen Energy as Dolphin DrillingStrategyBackground
The company sought to align its formal corporate name more closely with the Dolphin drilling identity.
Action taken
Fred. Olsen Energy ASA was renamed Dolphin Drilling ASA in December 2018.
Aftermath
The company entered bankruptcy proceedings the following year and was subsequently reorganized under Dolphin Drilling Holdings Limited.
Sources1 sources
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