Ghana: Tullow Encounters Gas Condensate at Tweneboa-4 Appraisal Well

 

The Tweneboa-4 appraisal well in the Deepwater Tano licence offshore Ghana has successfully encountered gas condensate in good quality sandstone reservoirs. Results of drilling, wireline logs and samples of reservoir fluids have confirmed the western extent of the Tweneboa gas condensate accumulation.

The well, located 3.9 kilometres southwest of the Tweneboa-2 appraisal well was drilled in the western flank of the accumulation to complete the appraisal of the Tweneboa gas-condensate discovery. The well encountered 18 metres of net gas condensate pay in high quality stacked reservoir sandstones which are in static pressure communication with both the Tweneboa-1 and Tweneboa-2 wells.

The Deepwater Millennium dynamically positioned drillship drilled Tweneboa-4 to a total depth of 4,007 metres in water depths of 1,436 metres. On completion of operations, the well will be suspended for future use in field appraisal and development. The rig will then move to perform drill stem tests on the Tweneboa-2 oil and gas-condensate accumulations.

Tullow (49.95%) operates the Deepwater Tano licence and is partnered by Kosmos Energy Ghana (18%), Anadarko Petroleum (18%), Sabre Oil & Gas (4.05%) and the Ghana National Petroleum Corporation (GNPC) (10% carried interest).

Commenting today, Angus McCoss, Exploration Director, said:

“Tweneboa-4 is an important milestone as it is the final well to be drilled in the Tweneboa appraisal programme. The upcoming programme of well testing in the Tweneboa field, along with drilling and well testing in the Enyenra field, will provide essential information on well deliverability, dynamic reservoir connectivity and hydrocarbon volumes, which will be used to optimise our development plans for these major fields.

Source: Tullow, April 13, 2011

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