Rig: Transocean Legend

Name Transocean Legend
Owner Transocean Ltd.
Manager Transocean Offshore Deepwater Drilling Inc.
Rig Type Semisub
Sub Type Midwater Floater
Jackup Type --
Max Water Depth (ft) 3500
Max Drill Depth (ft) 25000
Dimensions (ft) 334 x 220 x 121
Leg Length (ft) --
Competitive No

Current Location

Country --
Region --

Drilling Equipment

Drawworks Type National Oilwell Varco 1625 DE
Drawworks HP 3000
Mud Pumps Type National Oilwell Varco; Gardner Denver A-1700-PT Triplex; PZ-11 Triplex
Top Drive National Oilwell Varco TDS-4S
Hookload Capacity (lbs) 1050000

Rig Construction Details

Rig Design Trosvik
Rig Model Bingo 3000
Year Built 1983
Country of Build Japan
Yard Name Tsu Shipyard
Group Yard Name Nippon Kokan Ltd.

Rig Contract Details

Operating Status Retired
Operator

Rig Images

News

17 Jul 2014

Apache makes gas discovery with Pharos-1

Karoon Gas Australia Ltd (Karoon) has reported that at 0600 WST on 16th July 2014 wireline logging of the Pharos-1 borehole was ongoing. Since the last update, the 6-1/2” hole section was drilled from 4,949mRT to a total depth of 5,220mRT. Final total depth of 5,220mRT was reached at 1940 WST on 10th July 2014. Wireline logging operations commenced on the 12th July 2014 and are ongoing at the time of this release. The presence of movable hydrocarbons is supported by petrophysical log interpretation, formation pressure gradients and downhole gas sampling. Preparations for a production test will commence on the completion of the wireline logging program. Pharos-1, the sixth and final well in the Browse Basin Phase 2 exploration drilling campaign is located approximately 9 kilometers north east of Proteus-1 and will be a further test of the Proteus-Crown trend. Pharos-1 is targeting an extension of the discovery made a Proteus-1 which established excellent reservoir quality and condensate bearing gas in the Montara formation. The exploration campaign, operated by ConocoPhillips, is using the ‘Transocean Legend’ semisub rig for the final well. The principal objective of the campaign is to better define the size and quality of the hydrocarbon resource withinthe exploration permits which contain the Greater Poseidon trend.

27 Jun 2014

Karoon releases Pharos-1 well update

Karoon Gas Australia Ltd (Karoon) has reported that at 0600 WST on 27th June 2014 preparations were being made to commence drilling in the 6-1/2” hole section of the Pharos-1 well. The current well depth is 4,950m. Since the previous update, the 8-1/2” hole section was drilled from 4,750m to a depth of 4,950m. Two wireline logging runs were completed before 7-5/8’ liner was run to a depth of 4,949m where it was cemented in place. Wireline logging of the 8-1/2” hole section was undertaken to obtain information to assist future well design. Pharos-1, is the sixth and final well in the Browse Basin Phase 2 exploration drilling campaign and is located approximately 9km north east of Proteus-1. Pharos-1 is targeting an extension of the discovery made at Proteus-1 which established excellent reservoir quality and condensate bearing gas in the Montara formation. ConocoPhillips is the primary operator of the WA-398-P Browse Basin permit and is using Transocean’s ‘Transocean Legend’ semisub rig for the drilling operations.

16 Jun 2014

Pharos-1 well nears completion

As at 0600 WST on 16 June 2014 the Pharos-1 well was drilling ahead at 4,570 mRT in the 8-1/2” hole section. Since the last update, the 12-1/4” hole section was drilled 1,719 metres from the 13-3/8” casing shoe at 2,316 mRT to a depth of 4,035 mRT. The 9-5/8” casing was then run to a depth of 4,030 mRT where it was cemented in place prior to drilling ahead in 8-1/2” hole size. Pharos-1, the sixth and final well in the Browse Basin Phase 2 Exploration Drilling Campaign is located approximately 9 kilometres north east of Proteus-1 and will be a further test of the Proteus-Crown trend. Pharos-1 is targeting an extension of the discovery made at Proteus-1 which established excellent reservoir quality and condensate bearing gas in the Montara formation. Pharos-1 is a low risk exploration well with the potential to add considerable resource to any future Poseidon development. The exploration campaign, operated by ConocoPhillips, is using the ‘Transocean Legend’ semi-submersible rig for the final well. The principal objective of the campaign is to better define the size and quality of the hydrocarbon resource within the exploration permits which contain the Greater Poseidon trend. ConocoPhillips is the operator of the WA-315-P Browse Basin permit in which Karoon Gas Australia Ltd currently holds 40%.

22 May 2014

'Transocean Legend' spuds Pharos-1

Pharos-1, the sixth and final well in the Browse Basin Phase 2 exploration drilling campaign, was successfully spudded by the ‘Transocean Legend’ rig on the 20th May 2014. As of 0600 WST on 22nd May 2014 the well was being drilled ahead in the 17-1/2” hole section, with a current well depth of 716mRT. Pharos-1, is located approximately 9 kilometres north east of Preoteus-1 and will be a further test of the Proteus-Crown trend. Pharos-1 is targeting an extension of the discovery made at Proteus-1. The exploration campaign is operated by ConocoPhillips in the Greater Poseidon trend, where ConocoPhillips is the operator of the WA-315-P permit in which Karoon Gas Australia Ltd holds a 40% interest.

16 May 2014

ConocoPhillips makes discovery with Poseidon North-1

ConocoPhillips has successfully hit gas with its latest exploration well in the Browse basin, off the west coast of Australia. Karoon Gas Australia (Karoon), who are ConocoPhillips joint venture partner in the well announced that the Poseidon North-1 well reached a total depth of 5,288m on the 5th may 2014 afterwhich a wireline logging programme began. Karoon released the statement that, “based on cuttings, mud gas and wireline log data, Karoon interprets that the Poseidon North-1 well intersected gas bearing sands of Jurassic age across a 20 metre gross, 12 metre net reservoir interval”. After the completion of the logging operations, plug and abandonment operations began on the 13th May 2014. Upon completion of the plugging and abandonment work the ‘Transocean Legend’ semisub will be mobilised to drill the sixth exploration well in ConocoPhillips Browse basin exploration plan, the Pharos-1 well.

17 Apr 2014

Karoon releases Poseidon North-1 well update

Karoon Gas Australia Ltd (Karoon) has reported an update to the Poseidon North-1 exploration well being drilled in WA-315-P in Australia. At 0600 WST on 17th April 2014, the hole was at a depth of 3,820m and preparations were being made to install the 9-5/8” casing. Since the last progress report released on the 4th April 2014, the cement casing shoe has been drilled and the 12-1/4” hole section drilled 1,361m to the current depth of 3,820m. Poseidon North-1 is the fifth well in the Browse Basin Phase 2 exploration drilling campaign. The well is targeting the Plover and Montara formations and has the potential to add significantly to the already discovered Greater Poseidon area resource. The six well Browse Basin Phase 2 exploration drilling campaign will continue through calendar year 2014 using the ‘Transocean Legend’ rig. Four of the six wells have been completed so far. The well location for the last exploration well will be announced upon joint venture approval. The principal objective of the campaign will be announced upon joint venture approval. The principal objective of the campaign is to better define the size and quality of the hydrocarbon resource within the exploration permits which contain the Greater Poseidon trend. ConocoPhillips is the operator of the WA-315-P Browse Basin permit in which Karoon holds a 40% interest.

20 Mar 2014

ConocoPhillips spuds fifth well in Australian exploration campaign

ConocoPhillips has spudded the Poseidon North-1 well, the fifth well in its Browse Basin Phase 2 exploration campaign according to its partner Karoon Gas. The Poseidon North-1 exploration well, located 6.5km north-east of the Poseidon-1 well in permit WA-315-P, is targeting the Plover and Montara formations and has the potential to add significantly to the already discovered Greater Poseidon area. The six well Brows Basin Phase 2 drilling campaign will continue to utilise the ‘Transocean Legend’ semisub rig throughout 2014. Four of the six wells have been completed so far. The well location for the last exploration well will be announced upon joint venture approval. The principal objective of the campaign is to better define the size and quality of the hydrocarbon resource within the exploration permits which contain Greater Poseidon trend. ConocoPhillips is the operator of the WA-315-P Browse Basin permit in which Karoon Gas Australia Ltd currently holds 40%.

20 Jan 2014

'Transocean Legend' continues to drill ahead at Grace-1 well in Australia

Karoon Gas Australia (Karoon) has released a progress report on the drilling of the ConocoPhillips operated Grace-1 exploration well in Australia. The well which is being drilled by the ‘Transocean Legend’ semisub has reached a depth of 4,844m with drilling continuing ahead. Drilling work was temporarily halted due to tropical cyclone Christine as the crew were evacuated from the rig however, normal operations resumed once the cyclone had passed. The Grace-1 well is the fourth exploration well being drilled by Conocophillips in its current exploration campaign and the oil and gas operator plans to drill a further two wells in 2014 using the ‘Transocean Legend’ rig.

6 Oct 2005

Rosneft-BP joint venture makes second discovery in Sakhalin

CJSC “Elvary Neftegas” (Rosneft-BP joint venture) today announced the successful completion of drilling and testing of its second exploratory well in the Kaigansky–Vasuykansky exploration licence. The offshore licence block, covering over 6,000 square kilometres, lies in the south of the Sakhalin-5 acreage, north-east of Sakhalin Island. The Udachnaya well was drilled to a total depth of 2,705 meters and encountered hydrocarbons in three zones. A restricted test programme was conducted on a single zone which flowed at a rate of 1,900 barrels of oil per day through a 28/64-inch choke. This second discovery in the block was made by the Transocean Legend semi-submersible drilling rig on the Udachnaya structure located about 40 kilometers offshore, in water depths of some 100 metres. The first well in the Kaigansky-Vasuykansky exploration licence was drilled in 2004 on the Pela Lache structure some 15 kilometres to the east. It encountered significant volumes of oil and gas in a number of high-quality sandstone reservoirs. Elvary Neftegas plans to continue exploratory drilling in 2006.

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