Tullow Oil plc (Tullow) announced on Thursday that its Enyenra-2A appraisal well in the offshore Deepwater Tano licence has successfully encountered oil in \u201cexcellent quality sandstone reservoirs\u201d.<\/p>\n
In a statement signed by Mr Gayheart Mensah, Communications Manager, Tullow said \u201cgood evidence of communication with Owo-1 confirms that the Owo oil discovery, now renamed Enyenra, is a major light oil field\u201d. Located over seven kilometres south and down-dip of Owo-1, the well was drilled to appraise the Upper and Lower Channels of the Enyenra Oil Field. \u201cResults of drilling, wireline logs, samples of reservoir fluids and pressure data show that Enyenra-2A has intersected 21 metres of net oil pay in the Upper Channel, and 11 metres of net oil pay in the Lower Channel.\u201d<\/p>\n
The statement said pressure data from the Upper Channel had also demonstrated that the oil was in communication with the Owo-1 well. \u201cOil pressures in the Lower Channel suggest it may also be in communication with the deeper pools seen in Owo-1 and its sidetrack.<\/p>\n
\u201cThe well also tested a deeper Turonian fan where five metres of gas-condensate bearing sandstones were intersected. Interpretation of the extent and thickness of this zone away from the well is ongoing.\u201d<\/p>\n
The statement said the Deepwater Millennium drillship drilled Enyenra-2A to a total depth of 4,234 metres in water depths of 1,674 metres.<\/p>\n
\u201cOn completion of operations, the well will be suspended for later use. Prior to flow testing, pressure gauges will be deployed to measure reservoir connectivity. The drillship will remain in the Deepwater Tano block to complete the drilling of the Tweneboa-4 well. The next appraisal well will be Enyenra-3A located up-dip to the north of the Owo-1 discovery.\u201d<\/p>\n
Tullow (49.95%) operates the Deepwater Tano licence and is partnered by Kosmos Energy (18%), Anadarko Petroleum (18%), Sabre Oil & Gas (4.05%) and the Ghana National Petroleum Corporation (GNPC) (10% carried interest).<\/p>\n
Mr Angus McCoss, Exploration Director, said: \u201cThe discovery of oil this far down-dip in Enyenra-2A, and the confirmation of its communication with the Owo-1 oil discovery, is an exceptional result.<\/p>\n
\u201cThis represents a major step forward in the appraisal of the Enyenra-Tweneboa area and is highly encouraging for our target to declare commerciality later this year. We are now looking forward to leveraging our expertise in the Jubilee play across the Atlantic through drilling the high-risk, high-impact, Zaedyus prospect in French Guiana in March.\u201d<\/p>\n<\/div>\n
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