Rig: Transocean Endurance

Name Transocean Endurance
Owner Transocean Offshore Deepwater Drilling Inc.
Manager Transocean Offshore Deepwater Drilling Inc.
Rig Type Semisub
Sub Type Midwater Floater
Jackup Type --
Max Water Depth (ft) 1640
Max Drill Depth (ft) 28000
Dimensions (ft) 380 x 318 x 75
Leg Length (ft) --
Competitive Yes

Current Location

Country Norway
Region NWECS

Drilling Equipment

Drawworks Type AKMH Wirth
Drawworks HP --
Mud Pumps Type AKMH Wirth
Top Drive Aker Maritime Hydraulics
Hookload Capacity (lbs) 1500000

Rig Construction Details

Rig Design Gotaverken
Rig Model GVA 4000 NCS
Year Built 2015
Country of Build South Korea
Yard Name Okpo Shipyard
Group Yard Name Daewoo Shipbuilding & Marine Engineering (DSME)

Rig Contract Details

Operating Status Operational
Operator Equinor

News

15 Oct 2016

Well incident at Songa Endurance

On Saturday 15 October a well control incident occurred on the drilling rig Songa Endurance. The well has now been secured with a blowout preventer around the drill string on the seabed and with a valve on the rig. Work is now being carried out to stabilise the well. Personnel without work assignments in connection with the incident will now be removed from the rig. The incident was reported to the company’s alarm centre at 9:50 am CET on Saturday. There were 107 people on board when the incident occurred. No injuries were reported and there is no risk of an oil spill. Songa Endurance was working on the G4 well in the Troll field near Troll B when complications arose. Complications occurred during the work on removing the production string from the well. The blowout preventer was then activated and the well is now closed. There is still pressure in the well and work is now being carried out to stabilise the well. Fluid for stabilising the well is being sent out to the rig from land to be able to perform this work. These supplies are expected to arrive at the field at around 8 pm CET this evening. Extra specialist personnel are on the way to the rig to assist those on board. Statoil and Songa Offshore have mobilised their emergency response organisations. The emergency response vessel Stril Merkur is at the field and other resources, including helicopters, are available. Weather conditions are good. The Troll field is located in the northern part of the North Sea, approximately 65 kilometres west of Kollsnes in Hordaland. The field extends over an area of 750 square kilometres in blocks 31/2, 31/3, 31/5 and 31/6 in the North Sea.

8 Jan 2016

Acknowledgement of Compliance for Songa Endurance

Songa Offshore has received the PSA's Acknowledgement of Compliance (AoC) for Songa Endurance. Songa Endurance is a semi-submersible drilling facility and the first of four Cat D rigs that Songa is building for Statoil. In total, 59 mobile facilities have now received an Acknowledgement of Compliance from the PSA.

31 Dec 2015

Songa Endurance commencement of drilling contract

Songa Endurance has today commenced drilling operations under its eight-year drilling contract with Statoil at the Troll Field on the Norwegian continental shelf, and the rig is now on operating rate. Songa Endurance is the second rig in a series of four Category D semi-submersible drilling rigs, specifically built for and contracted to Statoil.

24 Aug 2015

'Songa Endurance' semisub is delivered by DSME

Songa Offshore SE (“Songa”) has today taken delivery of the Songa Endurance semisub from Daewoo Shipbuilding & Marine Engineering (“DSME”) in South Korea. Songa Endurance will shortly depart South Korea enroute to Norway for commencement of an eight-year drilling contract with Statoil, with first assignment on the Troll Field on the Norwegian continental shelf. The voyage to Norway will take place with tow-assist and the rig will arrive with all third party equipment installed and ready for final acceptance testing. Commencement of drilling operations is expected to take place around year-end. Songa Endurance is a sixth generation, high specification, harsh environment, midwater rig designed for efficient year around drilling, completion, testing and intervention operations in water depths up to 500 meters. The rig is certified DP3 and is equipped with a "state-of-the-art" drill-floor and an efficient layout with improved safety and working environment features. Songa Endurance is the second rig in a series of four Category D rigs specifically built for and contracted to Statoil.

15 Jul 2015

Songa receives notice of arbitration from Daewoo

Songa Offshore SE (“Songa”) has announced that Daewoo Shipbuilding and Marine Engineering Co. Ltd. (“DSME”) has delivered notices of arbitration in respect of the construction contracts for Songa’s Cat D semisub rigs. No details regarding the dispute have been included in the notices by DSME. As informed by Songa in its first quarter 2015 interim financial report, DSME has experienced significant delays and cost overruns during the Cat D project. Irrespective of that, the Songa continues to be of the view that any attempt to recover cost overruns is of no merit and will defend its position vigorously.

5 Jul 2011

Songa providing Statoil with a new rig type

Statoil has awarded the contract for construction of two new drilling rigs for use on the Norwegian continental shelf (NCS) to Songa Offshore. The contract for the two category D rigs is worth an aggregate USD 2,47 billion for a fixed eight-year charter period. "Stepping up our industrialisation of the NCS we are very pleased to announce that Songa will help realise our industrial approach and we wish to give them recognition for their long-term perspective on this partnership", says Jon Arnt Jacobsen, Statoil's chief procurement officer. "Through joint efforts we intend to rejuvenate the rig fleet on the NCS and ensure that we use the right rig for the right purpose." "This procurement process has certainly attracted great interest among rig entrepreneurs, contractors and investors", says Jon Arnt Jacobsen. "Many bidders have taken part in this process and the competition has been keen. Considering that we are ready to start this less than two years after the idea was launched, I consider this a success story!" Capable of operating in 100 to 500 metres of water this specially designed category D drilling rig can drill wells down to 8,500 metres. It will be a workhorse on mature fields, primarily drilling production wells and completing wells, enabling Statoil and its partners to produce more oil from the fields. Troll is the very cornerstone of Norwegian gas production, and also one of the largest oil fields on the NCS, oil production in 2010 totalling more than 120 000 barrels per day. Holding many world records Troll will now also be the first field to be serviced by the new specially designed rigs. Statoil has awarded the contract for the charter of the two first category D rigs on behalf of the Troll licence. "Statoil and its Troll partners have high ambitions for the further development of the field and we are pleased to have taken a decision to charter two specially designed rigs", says Hans Jakob Hegge, Statoil's senior vice president for Eastern North Sea operations in Development and Production Norway. "We will now have a tool capable of performing the demanding tasks ahead. The rig capacity on the NCS is limited, and increased capacity is essential to ensure enhanced recovery. The new rigs are expected to operate 20% more efficiently than conventional rigs, and we look forward to having the new rigs up and running from 2014." A hull designer, several topside suppliers, yard and rig entrepreneurs have helped develop the category D rig concept. Songa has assigned the rig construction work to the DSME yard in South-Korea. Aker Solutions has been picked as the supplier of the drilling equipment. The project concept and design has taken one year and the implementation period is expected to take three years, including detail engineering, construction and transportation to the NCS. The mobilisation from the yard in South-Korea to the North Sea is included in the contract value and will take about three months. The rig hand-over is scheduled for the second half of 2014. The fixed contract period is for eight years per rig, with four three-year options, i.e. in practice a 20-year contract per rig. This is a long-term approach, which ensures rig capacity for Statoil's growth ambitions, as well as predictability for the rig company. Statoil is considering including two more category D rigs in its portfolio. For this purpose Statoil has secured the opportunity to exercise its option for two category D rigs from Songa Offshore, but is also continuing its evaluation of the received bids from other bidders. During the last half of 2011 Statoil will consider various contractual solutions to ensure the construction of another two category D rigs, including the opportunity to take an ownership position in the rigs.

21 Feb 2011

Long-term contract for new rig design

Statoil is sending out an invitation to tender for a new type of drilling rig. It is specially-designed by the industry on behalf of Statoil for use on mature fields on the Norwegian continental shelf (NCS). The purpose is to make drilling and completion of production wells less expensive, more effective and safer, and thereby boost oil recovery. Discoveries on the NCS are getting smaller and it is becoming more important to increase drilling activity in mature fields to attain the full potential of the NCS. To meet this challenge, lower rig rates, greater drilling efficiency and access to rigs are key factors. “The rigs delivered to the NCS in recent years were first and foremost constructed for operations in deep water,” says Jon Arnt Jacobsen, chief procurement officer in Statoil. “That means that they are big and too costly for our requirements and challenges on the NCS. We are therefore taking steps to rejuvenate the rig fleet and ensure that the right rig meets the right requirements.” The specially-designed category D rig is able to operate at water depths of 100-500 metres and drill wells down to 8,500 metres. It will be a workhorse on mature fields, primarily for drilling production wells and well completion. In this way, Statoil and its partners can get more oil out of the fields. The rig has been developed in collaboration with various industry players. Statoil is issuing a tender for minimum two such rigs for work on the NCS. The contract will run for either eight years with four three-year options or for 20 years firm contract period. This is an unusually long period of contract which will reduce the risk for the drilling contractor who will build the rig. Statoil is also considering taking an ownership stake in the rig. “Statoil is taking responsibility for a long-term development of the NCS – we see that there are still big opportunities here,” says Jacobsen. “Now we need to think anew with regard to reducing drilling costs and we will see if it’s possible to achieve a more industrialised development.” It is many years since big discoveries were made on the NCS. Minor finds are made but the margins are lower. It is therefore necessary to reduce rig costs in order to realise the potential value. Small finds are also often made near existing fields. Fast developments are then important so that the existing infrastructure can be utilised. “The key to maintaining today’s production level on the NCS towards 2020 is improved recovery from existing fields and fast and effective development of new fields,” says Øystein Michelsen, executive vice president for Development and Production Norway. “In order to implement these measures it is crucial that we secure a rig fleet which is adapted to suit the assignments and which can work more effectively.” A rig like this will be able to drill and do well completions in the North Sea and the Norwegian Sea throughout the year. “The goal is that the new rig will drill 20% more effectively than conventional rigs,” says Jon Arnt Jacobsen. “This will help to counteract the cost trends in the rig market.” Plans call for the contract to be awarded in the third quarter of 2011 and the rigs to be delivered in the second half of 2014.

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