Rig: GSF Celtic Sea

Name GSF Celtic Sea
Owner Transocean Rig Services Offshore LLC
Manager Transocean Offshore Deepwater Drilling Inc.
Rig Type Semisub
Sub Type Deepwater Floater
Jackup Type --
Max Water Depth (ft) 5750
Max Drill Depth (ft) 25000
Dimensions (ft) 306 x 240 x 105
Leg Length (ft) --
Competitive No

Current Location

Country --
Region --

Drilling Equipment

Drawworks Type National Oilwell Varco ADS 30Q
Drawworks HP 3000
Mud Pumps Type National Oilwell Varco 12-P-160 Triplex
Top Drive National Oilwell Varco TDS-4S
Hookload Capacity (lbs) 1543000

Rig Construction Details

Rig Design Friede & Goldman
Rig Model L-907 Enhanced Pacesetter
Year Built 1997
Country of Build USA
Yard Name AmFELS
Group Yard Name Keppel Offshore & Marine Ltd.

Rig Contract Details

Operating Status Retired
Operator

Rig Images

News

31 Mar 2015

VAALCO drills duster on Block 5 in Angola

VAALCO Energy, Inc. (“VAALCO”) today announced that the post-salt Kindele-1 well, its first exploration well on Block 5 offshore Angola, was drilled to a total vertical depth of approximately 1,829 meters. The objective reservoir, the Mucanzo sand formation in the Pinda Group section, was found to be water-bearing and the well is currently in the process of being plugged and abandoned. Given the results of the well, earlier plans to drill to 2,250 meters for geologic and geophysical correlation will not be undertaken. Steve Guidry, Chairman and CEO, commented, "We are disappointed with the outcome of this first well drilled offshore Angola. The well targeted a three-way fault closure where the fault appears to have not provided the required lateral seal. The Mucanzo target sands were present and of a very high quality. We did find non-commercial hydrocarbon shows higher in the Pinda Group, in the overlying Catambela formation, indicating we were in a proven hydrocarbon system. Overall, we remain optimistic about the additional prospects and leads, both pre- and post-salt, on the block." As previously announced in October 2014, VAALCO, together with its working interest partner, Sonangol P&P, entered into the Subsequent Exploration Phase ("SEP") on Block 5. Under the SEP, VAALCO and Sonangol P&P have committed to drill a total of four exploration wells during the exploration extension period, which expires in November 2017. The four-well obligation includes the original two-well commitment under the primary exploration period that carries over to the SEP period. VAALCO has recently completed the seismic processing of over 2,025 square kilometers of 3D data in the outboard portion of Block 5. The Company has already identified several new pre-salt and post-salt leads as future exploration targets to be evaluated on Block 5.

5 Mar 2015

'GSF Celtic Sea' spuds exploration well in Angola

VAALCO Energy, Inc. (“VAALCO”) today announced that on March 2nd, 2015, the Company spudded the post-salt Kindele-1 well, its first exploration well on Block 5 offshore Angola. As previously announced, VAALCO contracted the Transocean GSF Celtic Sea semi-submersible rig to drill the Kindele-1 well to a planned total depth of 2,250 meters in a water depth of approximately 100 meters. Steve Guidry, Chairman and CEO, commented, "We are very pleased to announce this major step forward for our operations offshore Angola. After nearly nine years of continued commitment to our Block 5 license, we are embarking on an important phase in our efforts to explore for hydrocarbons from a second West African country. We continue to believe that Block 5 is within an area with potential in both post- and pre-salt formations including the syn-rift and sag play." As previously announced in October 2014, VAALCO, together with its working interest partner, Sonangol P&P, entered into the Subsequent Exploration Phase ("SEP") on Block 5. Under the SEP, VAALCO and Sonangol P&P have committed to drill a total of four exploration wells during the exploration extension period, which expires in November 2017. The four-well obligation includes the original two-well commitment under the primary exploration period that carries over to the SEP period. The Kindele-1 well will test a fault block adjacent to the Mubafo discovery which tested oil from the Mucanzo sand section within the Pinda group formations. The Kindele-1 will be drilled to a depth of 1,800 meters to evaluate the Mucanzo sand section. The well will then be deepened to the salt to an estimated depth of 2,250 meters for geologic and geophysical correlation. The well is expected to take approximately six weeks to drill to total depth. Additionally, the Company is nearing finalization of the seismic processing in the outboard portion of Block 5. The seismic processing is being performed to image pre-salt structures as potential targets for future exploration wells on Block 5.

24 Oct 2014

VAALCO enters into SEP for block 5 in Angola

VAALCO Energy, Inc. (VAACLO) today announced that the Company has entered into the Subsequent Exploration Phase ("SEP") on Block 5 offshore Angola together with its working interest partner, Sonangol P&P, as provided for in the Production Sharing Agreement signed in 2006 with the Republic of Angola. The SEP extends the exploration license for an additional three year period such that the new expiry date for exploration activities is November 30, 2017. The SEP requires the Company and its partner to acquire a 3D seismic program covering six hundred square kilometers and to drill two additional exploration wells. The seismic obligation has been satisfied with a seismic program already completed covering 1,058 square kilometers over the outboard portion of the block. By entering the SEP, the Company is now required to drill a total of four exploration wells during the exploration extension period. The four well obligation includes the two well commitment under the primary exploration period that carries over to the SEP period. A ten million dollar assessment (five million dollars net to VAALCO) applies to each of the four commitment exploration wells, if any, that remain undrilled at the end of the exploration period in 2017. As previously announced, the Company has contracted for the Transocean "Celtic Sea" semi-submersible rig to drill the first exploration well, the post-salt, Kindele-1 well. The Kindele well is targeting the Mucanzo sand (Pinda group) with a planned total depth of 2,250 meters in a water depth of 101 meters. Gross unrisked recoverable resources are estimated to be between 20-49 million barrels. The rig is currently estimated to be on location in mid-December 2014. The decision to enter the SEP was made in part to remove uncertainty that the primary term of the exploration license would be extended by the Republic of Angola before the November 30, 2014 expiration date.

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