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Tullow Announces Successful Result Of Another Oil Well
 
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28-Sep-2011  
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Tullow Oil plc (Tullow) on Wednesday announced that the Enyenra-3A appraisal well in the Deepwater Tano licence offshore Ghana has “successfully encountered” oil in high quality sandstone reservoirs.

An official statement from Tullow, one of the partners in the Jubilee Field offshore the Western Region, said pressure data indicated that the Enyenra-3A well had “confirmed an up-dip extension of the Enyenra oil field”. It said, “Located 6.5km north of the Owo-1 discovery well and 14km north of Enyenra-2A, the well was drilled to test the up-dip extent of the Enyenra oil field.

“Results of drilling, wireline logs, samples of reservoir fluids and pressure data show that Enyenra-3A has intersected 17 metres of 35 degrees API net oil. Pressure data confirms a continuous oil column of at least 365 metres and that the oil at Enyenra-3A is in static pressure communication with both the Owo-1 discovery well and the Enyenra-2A appraisal well.”

The statement said the Deepwater Millennium drillship drilled Enyenra-3A to a total depth of 4,031 metres in water depths of 1,102 metres.It said on completion of drilling operations, prior to flow testing the Enyenra field in late 2011, pressure gauges would be deployed in Enyenra-2A and Enyenra-3A to determine reservoir connectivity.

The statement said the drillship would depart the Deepwater Tano block in late October having recently been replaced by the Sedco Energy drillship. The Sedco Energy would later drill the Enyenra-4A well to further appraise the downdip extent of the field, it said.

The well would be located 6.8km south of Enyenra-2A and over 20km downdip from the Enyenra-3A well and a result was expected at the end of the year, the statement added.“The Enyenra-5A well also is then likely to be drilled north of Enyenra-3A to test the ultimate updip extent of the field.”

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).

The statement said elsewhere in West Africa, Tullow would announce the result of the Montserrado-1 well offshore Liberia during October. Mr Angus McCoss, Exploration Director of Tullow, said: "This excellent result demonstrates that we are close to declaring the Enyenra and Tweneboa development commercial. Although the ultimate extent of the fields are yet to be fully determined, confirmation of this up-dip extension and long oil column in Enyenra is very encouraging."
 
 
 
Source: GNA
 
 

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