UK-based independent Cairn Energy says its latest appraisal well on the deepwater SNE discovery offshore Senegal has "confirmed the scale and potential of this world class asset."
The latest well, which is the final in a four-well campaign drilled this year, successfully demonstrated the extension of the SNE oil field upper reservoir units in the eastern portion of the SNE field, says partner FAR Ltd.
In March, Cairn increased its resource estimate on the major SNE discovery by 20%, with potential for it to increase further, following successful appraisal work. Cairn estimated that the field, also called Shelf Edge, contain P50, or 2C, resources at 385 MMbbl, up 20%. The field was listed as potentially the largest oil discovery in 2014 by Wood Mackenzie.
The latest well, drilled in 942m water depth, about 85km offshore in the Sangomar Offshore block, was was the joint venture’s sixth well offshore Senegal and reached the planned total depth (TD) of 2,944m below sea level (TVDSS). The Ocean Rig Athena, used to drill then plug and abandon the well, will now be de-mobilized.
Cairn Energy and its partners will now assess results from the wells, including two drill stem tests and more than 600m of core.
Cairn Energy CEO Simon Thomson said: “We have now drilled four successful appraisal wells in Senegal and we are delighted with the results to date of the multi-well evaluation program, which has confirmed the scale and potential of this world class asset.
"We have gathered a very large volume of data from operations to date and we look forward to progressing our long-term, multi-field, multi-phase exploitation plan to maximise value in Senegal. We see clear potential to access additional cost savings from the current lower operating environment in respect of planned future activity.”
Cairn’s initial analysis of the dataset collected is:
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