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Drilling Reports

Cairn reports Senegal well success

11 July 2017 08:22

Cairn Energy has confirmed that oil samples have been obtained from the FAN South-1 well in the South Fan prospect offshore Senegal.

Cairn said the Stena DrillMAX drill ship performance continued to be excellent and operations had been safely and successfully completed ahead of schedule and under budget following drilling and wire line logging operations. The well encountered hydrocarbon bearing reservoir (Lower Cretaceous) and oil samples were obtained. It said preliminary analysis indicated 31 degree API oil quality and further work was being undertaken to integrate this discovery with FAN-1 to establish the potential commerciality of the deep water, basinal resource seen in these two wells.

FAN South-1 - located in ~2,175 metres (m) water depth, ~90 kilometres (km) offshore in the Sangomar Deep Offshore block and 30 km south west of the FAN-1 exploration well - reached total depth of 5,343m, targeting dual prospects: an Upper Cretaceous stacked multi-layer channelised turbidite fan prospect and a Lower Cretaceous base of slope turbidite fan prospect, similar to the FAN-1 oil discovery in 2014.

Cairn said FAN South -1 was being plugged and abandoned.

It said the rig was now moving location to commence operations at the SNE North exploration prospect, 15 km north of the SNE-1 discovery well and the most northerly location yet tested, on trend with the highly successful SNE field.

SNE North is targeting a prospective volume of more than 80 mmbbls of total resource in multiple objectives.

The well is located in ~ 900m water depth and the projected total depth of the well is 2,800m.

Chief executive Simon Thomson said: "FAN South is our 10th well in Senegal in the last three years and our second well to encounter oil in the deep portion of the basin, adjacent to the FAN discovery.

"The results of FAN South will be integrated with FAN-1 and SNE to help the joint venture's ongoing evaluation of the large, deep water basin potential offshore Senegal.

"As planning for the phased development of the SNE field moves ahead, we will shortly commence operations on the SNE North prospect which has the potential to enhance our total resources in Senegal."

At 8:22am: (LON:CNE) Cairn Energy PLC share price was -1.15p at 169.25p

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